Document:

Filed by Automated Filing Services Inc. (604) 609-0244 - Solar Enertech Corporation - Exhibit 10.13

PROMISSORY NOTE 

	$100,000.00 USD 	Date: May 8, 2006 

FOR VALUE RECEIVED, SOLAR ENERTECH CORP. (the
“Promissor”) hereby promises to pay to COACH CAPITAL LLC, or such other
holder for the time hereof (the “Holder”), the principal amount of One Hundred
Thousand Dollars ($100,000.00) in the United States currency (the “Principal
Amount”) ON DEMAND, and to pay interest thereon at the rate of ten percent (10%)
per annum calculated annually from May 8, 2006 on so much of the Principal
Amount as shall be outstanding from time to time. 

Arrears in payment of the Principal Amount or any interest
shall bear interest at the rate of ten percent (10%) per annum calculated
annually. Default in paying the Principal Amount or any interest shall, at the
option of the Holder, render the entire balance then owing hereunder at once due
and payable. Time shall be of the essence of this Note. Extension of time for
payment of all or any part of the amount owing hereunder at any time or times,
or failure of the Holder to enforce any of the rights or remedies hereunder,
shall not release the Promissor and shall not constitute a waiver of the rights
of the Holder to enforce such rights and remedies thereafter. 

Should suit be brought to recover on this Note, the Promissor
promises to pay reasonable attorney’s fees and court costs in addition to the
amount found to be due on this Note. 

IN WITNESS WHEREOF the Promissor has executed this Note on May
8, 2006 

SOLAR ENERTECH CORP. 

	By: “Leo Shi
    Young”	 
	     Authorized SignatoryFiled by Automated Filing Services Inc. (604) 609-0244 - Solar Enertech Corporation - Exhibit 10.14

PROMISSORY NOTE 

	$500,000.00 USD 	Date: July 3, 2006 

FOR VALUE RECEIVED, SOLAR ENERTECH CORP. (the
“Promissor”) hereby promises to pay to COACH CAPITAL LLC, or such other
holder for the time hereof (the “Holder”), the principal amount of Five Hundred
Thousand Dollars ($500,000.00) in the United States currency (the “Principal
Amount”) ON DEMAND, and to pay interest thereon at the rate of ten percent (10%)
per annum calculated annually from July 3, 2006 on so much of the Principal
Amount as shall be outstanding from time to time. 

Arrears in payment of the Principal Amount or any interest
shall bear interest at the rate of ten percent (10%) per annum calculated
annually. Default in paying the Principal Amount or any interest shall, at the
option of the Holder, render the entire balance then owing hereunder at once due
and payable. Time shall be of the essence of this Note. Extension of time for
payment of all or any part of the amount owing hereunder at any time or times,
or failure of the Holder to enforce any of the rights or remedies hereunder,
shall not release the Promissor and shall not constitute a waiver of the rights
of the Holder to enforce such rights and remedies thereafter. 

Should suit be brought to recover on this Note, the Promissor
promises to pay reasonable attorney’s fees and court costs in addition to the
amount found to be due on this Note. 

IN WITNESS WHEREOF the Promissor has executed this Note on July
3, 2006 

SOLAR ENERTECH CORP. 

	By: “ Leo Shi
      Young”	 
	       Authorized SignatoryFiled by Automated Filing Services Inc. (604) 609-0244 - Solar Enertech Corporation - Exhibit 10.15

PROMISSORY NOTE 

	$100,000.00 USD 	Date: January 24, 2007

FOR VALUE RECEIVED, SOLAR ENERTECH CORP. (the
“Promissor”) hereby promises to pay to THIMBLE CAPITAL LTD., or such
other holder for the time hereof (the “Holder”), the principal amount of One
Hundred Thousand Dollars ($100,000.00) in the United States currency (the
“Principal Amount”) ON DEMAND, and to pay interest thereon at the rate of ten
percent (10%) per annum calculated annually from January 24, 2007 on so much of
the Principal Amount as shall be outstanding from time to time. 

Arrears in payment of the Principal Amount or any interest
shall bear interest at the rate of ten percent (10%) per annum calculated
annually. Default in paying the Principal Amount or any interest shall, at the
option of the Holder, render the entire balance then owing hereunder at once due
and payable. Time shall be of the essence of this Note. Extension of time for
payment of all or any part of the amount owing hereunder at any time or times,
or failure of the Holder to enforce any of the rights or remedies hereunder,
shall not release the Promissor and shall not constitute a waiver of the rights
of the Holder to enforce such rights and remedies thereafter. 

Should suit be brought to recover on this Note, the Promissor
promises to pay reasonable attorney’s fees and court costs in addition to the
amount found to be due on this Note. 

IN WITNESS WHEREOF the Promissor has executed this Note on
January 24 2007 

SOLAR ENERTECH CORP. 

	By: “Leo Shi
    Young”	 
	       Authorized SignatoryFiled by Automated Filing Services Inc. (604) 609-0244 - Solar Enertech Corporation - Exhibit 10.17

	 	
      THIS DEBENTURE AND THE SHARES PURCHASABLE
      HEREUNDER HAVE BEEN ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN
      REGISTERED UNDER THE SECURITIES ACT OF 1933. NEITHER THIS
      DEBENTURE NOR SUCH SHARES MAY BE SOLD OR TRANSFERRED IN THE ABSENCE
      OF SUCH REGISTRATION IN EFFECT UNDER SUCH ACT UNLESS THE COMPANY
      RECEIVES AN OPINION OF COUNSEL OR OTHER EVIDENCE REASONABLY
      ACCEPTABLE TO IT DEMONSTRATING THAT SUCH SALE OR TRANSFER IS
      EXEMPT FROM THE REGISTRATION AND PROSPECTUS DELIVERY REQUIREMENTS
      OF SAID ACT OR UNLESS SOLD PURSUANT TO RULE 144 OF SUCH ACT.
      
	 
	 	
       
	 
	 	
      THE PRINCIPAL AMOUNT REPRESENTED BY THIS DEBENTURE
      AND, ACCORDINGLY, THE SECURITIES ISSUABLE UPON CONVERSION HEREOF
      MAY BE LESS THAN THE AMOUNTS SET FORTH ON THE FACE HEREOF PURSUANT
      TO SECTION 1 OF THIS DEBENTURE. 
	 

CONVERTIBLE DEBENTURE 

	US$300,000 	February 4, 2007 

FOR VALUE RECEIVED, SOLAR ENERTECH CORP., a Nevada corporation
(the “Company” or the “Corporation”), as of February 4, 2007 (the
“Date of Issuance”), hereby unconditionally promises to pay to the order
of COACH CAPITAL LLC or its assigns (the “Registered Holder”), at such
address or at such other place as may be designated in writing by the Registered
Holder, the aggregate principal sum of THREE HUNDRED THOUSAND DOLLARS
($300,000), together with interest at the rate of twelve (12%) percent per
annum. Subject to the other provisions of this Debenture, the principal of this
Debenture shall mature and become due and payable in full on the earlier of
August 4, 2008 or that date on which the Company completes a financing in excess
of US$2,000,000, be it an equity, debt, or other financing (the “Maturity
Date”). All payments of principal by the Company under this Debenture shall
be made in United States dollars to an account specified by the Registered
Holder to the Company in writing prior to the Maturity Date.

	1. 	CONVERSION OF PRINCIPAL AND
      INTEREST. 

	(a) 	
      By the Registered Holder.

	 	 	 
		(i) 	
      This Debenture may be converted by the Registered Holder,
      subject to the restrictions below, on or before the Maturity Date, in
      whole or in part, into that number of units (each unit comprised of one
      share of common stock and one share purchase warrant exercisable for years
      from the date hereof at an exercise price of $0.60 per share) (the “Units)
      equal to the principal amount of this Debenture (or the portion being
      converted), together with all interest accrued thereon and unpaid as of
      the date of the conversion, divided by the

Conversion Price, by surrendering this
Debenture, with the conversion notice appended hereto as Exhibit I duly
executed by the Registered Holder at the principal executive offices of the
Company, or at such other office or agency as the Company may designate. 

(ii) Each conversion of this Debenture
pursuant to this paragraph (a) shall be deemed to have been effected immediately
prior to the close of business on the day on which this Debenture shall have
been surrendered to the Company as provided above. At such time, the person or
persons in whose name or names any certificates for Units shall be issuable upon
such conversion as provided below shall be deemed to have become the holder or
holders of record of the Conversion Shares represented by such certificates.

(iii) As soon as practicable after the
conversion of this Debenture in full or in part, the Company, at its expense,
will cause to be issued in the name of, and delivered to, the Registered Holder,
or as such Registered Holder (upon payment by such Registered Holder of any
applicable transfer taxes) may direct:

(A)a certificate or certificates for
the number of Conversion Shares to which the Registered Holder shall be entitled
upon such conversion; and

(B) in case such conversion is in part
only, a new Debenture or Debentures (dated the date hereof) of like tenor, in
principal amount equal to the principal amount hereof less the amount that has
been converted into Conversion Shares. 

(b) By the Company. Conversion of this Debenture may not
be forced by the Company. 

(c) Conversion Price. The Conversion Price hereunder
shall be $0.60. 

	2. 	ADJUSTMENTS. 

(a) Adjustment for Stock Splits and Combinations. If the
Company shall at any time or from time to time after the date on which this
Debenture was first issued (the “Original Issue Date”) effect a
subdivision of the outstanding Common Stock, the Conversion Price shall be
proportionately increased to reflect the effect of such stock split or
subdivision. If the Company shall at any time or from time to time after the
Original Issue Date combine or reverse split the outstanding shares of Common
Stock, the Conversion Price shall be proportionately decreased. Any adjustment
under this paragraph shall become effective at the close of business on the date
the subdivision, reverse split or combination becomes effective.

(b) Adjustments for Other Dividends and Distributions.
In the event the Company at any time or from time to time after the Original
Issue Date shall make or issue, or fix a record date for the determination of
holders of Common Stock entitled to receive, a dividend or other distribution
payable in securities of the Company or in cash or other property, then and in
each such event the Registered Holder shall receive upon conversion hereof, in
addition to the Conversion Shares issuable hereunder, the kind and amount of
securities of the Company and/or cash and other property which the Registered
Holder would have been entitled to receive had this Debenture been converted on
the date of such event. 

- 2 - 

(c) Adjustment for Mergers or Reorganizations, etc. If
there shall occur any reclassification, reorganization, recapitalization,
consolidation, sale of all or substantially all assets or merger involving the
Company in which the Common Stock is converted into or exchanged for securities,
cash or other property (other than a transaction covered by subsection 2(b)
above), then, following any such reclassification, reorganization,
recapitalization, consolidation, sale of all or substantially all assets or
merger, and without payment of any additional consideration thereof, the
Registered Holder shall receive upon conversion hereof the kind and amount of
securities, cash or other property which the Registered Holder would have been
entitled to receive if, immediately prior to such reclassification,
reorganization, recapitalization, consolidation or merger, sale of all or
substantially all assets, this Debenture had been converted. 

	3. 	 FRACTIONAL
      SHARES. 

(a) The Company shall not be required upon the conversion of
this Debenture to issue any fractional shares, and shall round any fractional
shares to the next highest whole number of shares. If a fractional share
interest arises upon any conversion or conversion of the Debenture, the Company
shall eliminate such fractional share interest by paying the Registered Holder
an amount computed by multiplying the fractional interest by the Conversion
Price 

	4. 	 REPRESENTATIONS
      AND WARRANTIES BY THE REGISTERED HOLDER. 

(a) The Registered Holder represents and warrants to the
Company that it is not an affiliate of the Company and will, should it become an
affiliate of the Company, notify the Company of the change in its status. 

(b) Accredited Status. The Registered Holder, by
initialing the applicable paragraph (a) through (g) below, hereby
represents and warrants that the Registered Holder is an "Accredited
Investor" as defined in Regulation D under the Securities Act, because the
Registered Holder meets the requirements set forth in one or more of the
enumerated categories. Place your initials in the space provided in the
beginning of each applicable paragraph thereby representing and warranting as to
the applicability to the Registered Holder of the initialed paragraph or
paragraphs.

	 	[ 	
      ] (a) any individual Registered Holder whose net worth,
      or joint net worth with that person's spouse at the time of his purchase,
      exceeds $1,000,000 (including any individual participant of a Keogh Plan,
      IRA or IRA Rollover Registered Holder); 

	 	  	
	 	[ 	
      ] (b) any individual Registered Holder who had an income
      in excess of $200,000 in each of the two most recent years or joint income
      with that person's spouse in excess of $300,000 in each of those years and
      who reasonably expects an income in excess of the same income level in the
      current year (including any individual participant of a Keogh Plan, IRA or
      IRA Rollover Registered Holder); 

- 3 - 

	 	[ 	
      ] (c) any corporation or partnership not formed for the
      specific purpose of making an investment in the Common Stock, with total
      assets in excess of $5,000,000; 

	 	  	
       

	 	[ 	
      ] (d) any trust, which is not formed for the specific
      purpose of investing in the Common Stock, with total assets in excess of
      $5,000,000, whose purchase is directed by a sophisticated person, as such
      term is defined in Rule 506(b) of Regulation D under the Securities Act;
      

	 	  	
	 	[ 	
      ] (e) any ERISA Plan if the investment decision is made
      by a plan fiduciary, as defined in section 3(21) of ERISA, which is either
      a bank, insurance company, or registered investment adviser,or the Plan
      has total assets in excess of $5,000,000; 

	 	  	
       

	 	[ 	
      ] (f) any individual Registered Holder who is an
      executive officer or director of the Company.; or 

	 	  	
	 	  	
       

	 	[ 	
      ] (g) any entity in which all of the equity owners are
      Accredited Investors under paragraphs (a), (b), (c) or (f) above or any
      other entity meeting required "Accredited Investor" standards under Rule
      501 of Regulation D under the Securities Act and applicable State
      securities law criteria. IF THE REGISTERED HOLDER IS AN ENTITY IN WHICH
      ALL OF THE EQUITY OWNERS ARE ACCREDITED INVESTORS, THE REGISTERED HOLDER
      MUST PROVIDE A SUBSCRIPTION AGREEMENT FROM EACH OF ITS EQUITY OWNERS.
    

(c) Liquidity. Registered Holder presently has
sufficient liquid assets to purchase the Debenture. Registered Holder's overall
commitments to investments that are not readily marketable is not
disproportionate to Registered Holder's total assets, and Registered Holder's
investment in the Company will not cause such overall commitment to become
excessive. Registered Holder has adequate means of providing for its current
needs and contingencies and has no need for liquidity in its investment in the
Company or for a source of income from the Company. Registered Holder is capable
of bearing the economic risk and the burden of the investment contemplated by
this Agreement, including, but not limited to, the possibility of the complete
loss of the value of the Conversion Shares and the limited transferability of
the Conversion Shares, which may make the liquidation of the Conversion Shares
impossible in the near future. 

(d) Organization, Standing, Authorization. If a
corporation, limited liability company, or other entity, Registered Holder is
duly organized, validly existing, and in good standing under the laws 

- 4 - 

of its State of organization, and has the requisite power and
authority to purchase the Debenture. The purchase of the Debenture has been duly
authorized by all required action of Registered Holder's members or managers.
The person executing, on Registered Holder's behalf, this Debenture and any
other documents or instruments executed by Registered Holder in connection with
this Debenture is duly authorized to do so. 

(d) Sole Party in Interest. Registered Holder represents
that it is the sole and true party in interest, and no other person or entity
has or will have upon the purchase of the Debenture or the issuance of the
Conversion Shares any beneficial ownership interest in the Conversion Shares or
any portion of the Conversion Shares, whether direct or indirect. 

(e) Investment Purpose. Registered Holder represents
that it is acquiring the Debenture for its own account and for investment
purposes and not on behalf of any other person or entity or for or with a view
to resale or distribution. 

(f) Knowledge and Experience. Registered Holder has been
advised, to the Registered Holder’s satisfaction and understanding, with respect
to the advisability of an investment in the Company and the Debenture.
Registered Holder is experienced in evaluating and making speculative
investments, and has the capacity to protect its interests in connection with
the acquisition of the Debenture and the Conversion Shares. Registered Holder
has such knowledge and experience in financial and business matters in general,
and investments in the computer industry in particular, that Registered Holder
is capable of evaluating the merits and risks of Registered Holder's investment
in the Company. Registered Holder has been informed that an investment in the
Company is speculative and have concluded that Registered Holder's proposed
investment is appropriate in light of its overall investment objectives and
financial situation. 

(g) Disclosure, Access to Information. Registered Holder
confirms that it has received and thoroughly read and is familiar with and
understands this Agreement, and that all documents, records, books and other
information pertaining to Registered Holder's investment in the Company
requested by Registered Holder have been made available for inspection and
copying and that there are no additional materials or documents that have been
requested by Registered Holder that have not been made available by the Company.
Registered Holder further acknowledges it has had an opportunity to ask
questions of and receive answers from the Company's representatives, and that
any decision not to ask questions of the Company's representatives was a
conscious decision on Registered Holder’s part and reflects Registered Holder's
belief that no additional information is necessary in order to make an informed
decision about investing in the Company.

(h) Accuracy of Representations and Information. All
representations made by Registered Holder in this Debenture and all documents
and instruments related to this Debenture, and all information provided by
Registered Holder to the Company concerning Registered Holder and its respective
financial positions is correct and complete as of the date hereof. If there is
any 

- 5 - 

material change in such information before the actual issuance
of the Debenture or the Conversion Shares, Registered Holder immediately will
provide such information to the Company. 

(i) No Representations. None of the following have ever
been represented, guaranteed, or warranted to Registered Holder by the Company
or any of its employees, agents, representatives or affiliates, or any broker or
any other person, expressly or by implication: 

          (i)
  The approximate or exact length of time that Registered Holder will be required
  to remain as owner of the Debenture or the Conversion Shares; 

          (ii)
  The percentage of profit or amount of or type of consideration, profit or loss
  (including tax write-offs or other tax benefits) to be realized, if any, as
  a result of an investment in the Debenture or the Conversion Shares; or 

          (iii)
  The past performance or experience on the part of the Company or any affiliate
  or their associates, agents or employees, or of any other person as being indicative
  of future results of an investment in the Debenture or the Conversion Shares.

(j) No Representations by Brokers or Finders. Registered
Holder represents in making its decision to purchase the Debenture and the
Conversion Shares, it is not relying on any representations, warranties,
promises, or other inducements to purchase that were made by any broker, finder,
or selling agent of the Company, and that the only representations, warranties,
or other inducements to purchase are contained in the written materials provided
by the Company to the Registered Holder. 

	5. 	REQUIREMENTS FOR TRANSFER.
    

(a) This Debenture and the Conversion Shares shall not be sold
or transferred unless either (i) their transfer first shall have been registered
under the Securities Act of 1933, as amended (the “the Act”), and under
applicable state securities or blue sky laws, or (ii) the Company first shall
have been furnished with an opinion of legal counsel, reasonably satisfactory to
the Company, to the effect that such sale or transfer is exempt from the
registration requirements of the Act. 

(b) Each certificate representing Conversion Shares shall bear
a legend substantially in the following form: 

	 	
      “THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN
      ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
      ACT OF 1933. SUCH SHARES MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF
      SUCH REGISTRATION IN EFFECT UNDER SUCH ACT UNLESS THE COMPANY RECEIVES AN
      OPINION OF COUNSEL OR OTHER EVIDENCE 
	 

- 6 - 

	 	
      REASONABLY ACCEPTABLE TO IT DEMONSTRATING THAT SUCH SALE
      OR TRANSFER IS EXEMPT FROM THE REGISTRATION AND PROSPECTUS DELIVERY
      REQUIREMENTS OF SAID ACT OR UNLESS SOLD PURSUANT TO RULE 144 OF SUCH ACT.
      
	 

The foregoing legend shall be removed from the certificates
representing any Conversion Shares, at the request of the holder thereof, at
such time as (i) they become eligible for resale pursuant to an effective
registration statement or Rule 144(k) under the Act or (ii) the Company shall
have received either an opinion of counsel or a “no-action” letter from the SEC
to the effect that any transfer of the Conversion Shares represented by such
certificates will not violate the Act and applicable state securities laws. 

	6. 	 EVENT OF
      DEFAULT. 

(a) The occurrence of any of following events shall constitute
an “Event of Default” hereunder: 

          (i)
  the failure of the Company to make any payment of principal on this Debenture
  when due, whether at maturity, upon acceleration, or otherwise; or 

          (ii)
  the Company makes an assignment for the benefit of creditors or admits in writing
  its inability to pay its debts generally as they become due; or an order, judgment
  or decree is entered adjudicating the Company as bankrupt or insolvent; or any
  order for relief with respect to the Company is entered under the Federal Bankruptcy
  Code or any other bankruptcy or insolvency law; or the Company petitions or
  applies to any tribunal for the appointment of a custodian, trustee, receiver
  or liquidator of the Company or of any substantial part of the assets of the
  Company, or commences any proceeding relating to it under any bankruptcy, reorganization,
  arrangement, insolvency, readjustment of debt, dissolution or liquidation law
  of any jurisdiction; or any such petition or application is filed, or any such
  proceeding is commenced, against the Company and either (i) the Company by any
  act indicates its approval thereof, consents thereto or acquiescence therein
  or (ii) such petition application or proceeding is not dismissed within sixty
  (60) days. 

(b) Upon the occurrence of any such Event of Default all unpaid
principal under this Debenture shall become immediately due and payable.

	7. 	 NO
      IMPAIRMENT. 

(a) The Company will not, by amendment of its charter through
reorganization, transfer of assets, consolidation, merger, dissolution, issuance
or sale of securities or any other voluntary action, avoid or seek to avoid the
observance or performance of any of the terms of this Debenture, but will at all
times in good faith assist in the carrying out of all such terms and in the
taking of all such action as may be necessary or appropriate in order to protect
the rights of the holder of this Debenture against impairment. 

	8. 	 NOTICES OF
      RECORD DATE, ETC. 

(a) In the event: 

- 7 - 

(i) that the Company shall take a record of the holders of its
Common Stock (or other stock or securities at the time deliverable upon the
conversion of this Debenture) for the purpose of entitling or enabling them to
receive any dividend or other distribution, or to receive any right to subscribe
for or purchase any shares of stock of any class or any other securities, or to
receive any other right; or 

(ii) of any capital reorganization of the Company, any
reclassification of the Common Stock of the Company, any consolidation or merger
of the Company with or into another corporation (other than a consolidation or
merger in which the Company is the surviving entity and its Common Stock is not
converted into or exchanged for any other securities or property), or any
transfer of all or substantially all of the assets of the Company; or 

(iii) of the voluntary or involuntary dissolution, liquidation
or winding-up of the Company,

then, and in each such case, the Company will mail or cause to
be mailed to the Registered Holder a notice specifying, as the case may be, (i)
the record date for such dividend, distribution or right, and the amount and
character of such dividend, distribution or right, or (ii) the effective date on
which such reorganization, reclassification, consolidation, merger, transfer,
dissolution, liquidation or winding-up is to take place, and the time, if any is
to be fixed, as of which the holders of record of Common Stock (or such other
stock or securities at the time deliverable upon the conversion of this
Debenture) shall be entitled to exchange their shares of Common Stock (or such
other stock or securities) for securities or other property deliverable upon
such reorganization, reclassification, consolidation, merger, transfer,
dissolution, liquidation or winding-up. Such notice shall be mailed at least ten
days prior to the record date or effective date for the event specified in such
notice. 

	9. 	 STOCK FULLY
      PAID, RESERVATION OF STOCK. 

(a) All of the Conversion Shares issuable upon the conversion
of the rights represented by this Debenture will, upon issuance and receipt of
the purchase price therefor, be validly issued, fully paid and nonassessable,
and free from all taxes, liens and charges except for restrictions on transfer
provided for herein or under applicable federal and state securities laws. The
Company will at all times reserve and keep available, solely for issuance and
delivery upon the conversion of this Debenture, such number of shares of Common
Stock and other securities, cash and/or property, as from time to time shall be
issuable upon the conversion of this Debenture. 

	10. 	 REPLACEMENT OF
      DEBENTURES. 

(a) Upon receipt of evidence reasonably satisfactory to the
Company of the loss, theft, destruction or mutilation of this Debenture and (in
the case of loss, theft or destruction) upon delivery of an indemnity agreement
(without any obligation for a surety or other security therefor) in an amount
reasonably satisfactory to the Company, or (in the case of mutilation) upon
surrender and cancellation of this Debenture, the Company will issue, in lieu
thereof, a new Debenture of like tenor. 

- 8 - 

	11. 	 TRANSFERS,
      ETC. 

(a) The Company will maintain a register containing the name
and address of the Registered Holder of this Debenture. The Registered Holder
may change its or his address as shown on the Debenture register by written
notice to the Company requesting such change. 

(b) This Debenture and all rights hereunder are transferable,
in whole or in part, upon surrender of this Debenture with a properly executed
assignment in a form reasonably acceptable to the Company at the principal
executive offices of the Company. 

(c) Until any transfer of this Debenture is made in the
Debenture register, the Company may treat the Registered Holder as the absolute
owner hereof for all purposes; provided, however, that if and when
this Debenture is properly assigned in blank, the Company may (but shall not be
obligated to) treat the bearer hereof as the absolute owner hereof for all
purposes, notwithstanding any notice to the contrary. 

	12. 	 MAILING OF
      NOTICES, ETC. 

All notices and other communications from the Company to the
Registered Holder shall be mailed by first-class certified or registered mail,
postage prepaid, to the address last furnished to the Company in writing by the
Registered Holder. All notices and other communications from the Registered
Holder or in connection herewith to the Company shall be mailed by first-class
certified or registered mail, postage prepaid, to the Company at its principal
executive office. If the Company should at any time change the location of its
principal executive office to a place other than as set forth below, it shall
give prompt written notice to the Registered Holder and thereafter all
references in this Debenture to the location of its principal executive office
at the particular time shall be as so specified in such notice. 

	13. 	 NO RIGHTS AS
      STOCKHOLDER. 

Until the conversion of this Debenture, the Registered Holder
shall not have any rights by virtue hereof as a stockholder of the Company. 

	14. 	 REGISTRATION
      RIGHTS. 

The Registered Holder shall have the right to require, at any
time, that the Company file a registration right to register the resale of the
Conversion Shares under the Act, and the Company agrees that it shall use its
reasonable commercial to have such registration statement declared effective
within 90 days thereafter. Additionally, in the event that within the 24 months
following the execution of this Debenture the Company files a registration
statement other than for the Registered Holder’s Conversion Shares, the Company
shall include in such registration statement the resales of the Conversion
Shares by the Registered Holder, subject to limitations on the inclusion of such
shares by underwriters and other transaction participants. 

	15. 	 CHANGE OR
      WAIVER. 

Any term of this Debenture may be amended or waived upon the
written consent of the Company and the Registered Holder. 

- 9 - 

	16. 	 SECTION
      HEADINGS. 

The Section headings in this Debenture are for the convenience
of the parties and in no way alter, modify, amend, limit or restrict the
contractual obligations of the parties. 

	17. 	 GOVERNING
      LAW. 

This Debenture will be governed by and construed in accordance
with the internal laws of the State of Nevada without giving effect to the
conflict or choice of law provision thereof that would give rise the application
of the domestic substantive law of any other jurisdiction. 

[SIGNATURE PAGES FOLLOW.] 

- 10 - 

EXECUTED as of the Date of Issuance
indicated above. 

	 	SOLAR ENERTECH CORP. 
	 	  
	 	  
	 	By: 	 “Leo Shi Young” 
	 		Name:Leo Shi
  Young  
	 		Title:President &
    CEO  
	 	  
	 	COACH CAPITAL LLC
	 	(With Respect to Section 4 Only)
  
	 	  
	 	  
	 	By: “Michael Laidlaw” 
	 	Name:Micheal Laidlaw 
	 	Title:Secretary 

- 11 - 

EXHIBIT I 

CONVERSION NOTICE 

	To: SOLAR ENERTECH CORP. (the “Company”) 	Dated: 
_______________

                    The
  undersigned herewith elects to convert $__________ in principal amount of such
  Debenture, together with any and all accrued and unpaid interest thereon, at
  the Conversion Price provided for in such Debenture, which is $_________. 

          By
  signing below, the undersigned hereby warrants and represents that each of the
  representations and warranties contained in Section 4 of the Debenture are true,
  correct, and accurate as of the date of this Conversion Notice. 

          Please
  issue a certificate representing said shares of Common Stock in the name of
  the undersigned or in such other name as is specified below: 

	 	Name of Entity:
      ____________________________________________
	 	 
	 	Signature of 
	 	Authorized Person:
      _________________________________________
	 	 
	 	Address:
      ________________________________________________
	 	 
  
	 	 
	 	 
	 	Conversion Date:
      __________________________________________
	 	 
	 	Number of Shares of 
	 	Common Stock to be Issued: 
	 	 
	 	Amount of Debenture 
	 	Unconverted: $ 
	 	 
	 	Issue Shares in the Following Name

	 	And Deliver to the Following 
	 	Address:
      ________________________________________________
	 	 
	 	 

          Please
  also issue a replacement Debenture representing the balance outstanding, if
  any, upon completion of this conversion. 

-1-

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