baber/WOPTO huggingface dataset:
Patent KR-20080029885-A (KR)
Title: Multilayer tube
Inventor: IWAHARA KENGO
IPC: B32B27/34
Filed: 2007-09-28
Abstract: A multi-layer tube is provided to transport the functional water or medicinal fluid used in producing semiconductors or liquid crystals, by improving chemical resistance, gas barrier property, and cleaning effect. A multi-layer tube(1) is composed of an inner layer(10) made of fluorine resin and an outer layer(30) made of polyamide resin that does not contain an additive, to cover one surface of the inner layer. The inner layer is in direct contact with a chemical solution or a gas flowing through a hollow portion(40). In addition, the outer layer is placed on the outermost side of the tube in the radial direction of the tube, and is in direct contact with a gas with which an environment where the tube is placed is filled. Fluorine resin contains at least one selected from a group comprising TFE(Tetra Fluore Ethylene)-PFA(Per Fluore Alkoxy) having a fluorinated terminal group, ETFE(Ethylene Tetra Fluoro Ethylene), TFE-HFP(Hexafluoropropylene), and CTFE(Chloro Tri Fluoro Ethyelen)-TFE. Polyamide resin contains at least one selected from a group comprising polyamide 6, polyamide 12, polyamide 6/polyamide 12 copolymer. The inner and outer layers are bonded by an intermediate layer(20) made of fluorine resin. Fluorine resin forming the intermediate layer has at least one kind of functional group selected from a group comprising an acid anhydride group, a carboxyl group, an acid halide group, and a carbonate group.
Patent KR-20090033679-A (KR)
Title: Thermal fatigue test equipment
Inventor: GOO BYEONG CHOON
IPC: G01N3/00
Filed: 2007-10-01
Abstract: A thermal fatigue testing device is provided to prevent the corrosion of peripheral device by the jet of the cooling water and the malfunction by the complicated device structure. A thermal fatigue testing device comprises high-frequency heating means(10) which heats up the specimen (A) by using the heat which is generated when the high-frequency current, cooling induction means(20) inserting the specimen heated by the high-frequency heating means on the cooling water(31), and a cooling water storage tank(30) which includes the coolant temperature measuring sensor(32) installed at single-side the cooling water is stored.
Patent KR-20090035651-A (KR)
Inventor: JANG GIL SOO
IPC: B44C3/04
Filed: 2007-10-07
Abstract: 본 발명은 낙수(落水)를 이용하여 다양한 환경음향을 발생하는 장치에 관한 것으로, 특히 분수(噴水)나 벽천(壁泉) 조형물에서 발생하는 단순한 낙수음(落水音) 대신 아름다운 환경음향이 발생 되는 장치를 특징으로 하는 분수 또는 벽천의낙수를 이용한 환경음향발생장치에 관한 것이다. 
     이를 위하여 본 발명은 분수나 벽천에서 물방울이 분출된 후 중력에 의해 지면방향으로 향하여 떨어질 때, 분수나 벽천의 바닥 등 낙수의 경로에 설치되어 다양한 소리를 낼 수 있는 공명체 수단 및 공명 방법을 포함한다. 
     상기 장치는 제공된 공명체에 의하여 다양한 소리를 발생시킬 수 있어 의도적으로 디자인된 다양한 환경음향을 생성할 수 있다.  
       
     벽천, 분수, 낙수, 환경음향, 공명
Patent KR-20090036339-A (KR)
Title: System and method for generating original code of execute image
Inventor: PARK HEE AN
IPC: G06F9/06
Filed: 2007-10-09
Abstract: A system and a method for generating an original code of an execute image are provided to search and recover a re-altered code in an execute image at which rearrangement occurs in case that a code of the execute image is re-hooked or altered in a memory. A file search module(100) searches a mapped file in an execute image, and the execute image is loaded to a first address in a memory. An information analyzing module(200) analyzes the header information of the searched file. A region allocation module(300) loads the execute image of the searched file to a second address based on an analyzed header information, and maps a rearrangement target session based on a first address. A region allocation information table specifies the mapped rearrangement target session based on an actually loading address among the plural sessions included in a certain file when loading the execute images of the specific file to a memory.
Patent KR-20090037654-A (KR)
Title: Antenna for rfid reader having absorber
Inventor: LIM SUNG MOOK
IPC: H01Q1/24
Filed: 2007-10-12
Abstract: An antenna for an RFID reader having an electromagnetic wave absorber is provided to prevent interference of the electromagnetic wave through an electromagnetic wave absorber inserted between a loop unit and a main board. An antenna for an RFID reader includes a loop unit(100), a main board(130), and an electromagnetic wave absorber(120). A loop unit includes a conductive loop. The electromagnetic wave absorber is inserted between the loop unit and the metal part or metal component of a main board. The loop unit is one of a PCB(Printed Circuit Board), an FPCB(Flexible Printed Circuit Board), an HPCB(Hard FR4 Printed Circuit Board), and a coil. A magnetic field of an electromagnetic wave radiated from an antenna is in proportion to the magnetic field generated from the electromagnetic wave absorber. The electromagnetic wave radiated from the antenna is compensated.
Patent KR-20090042489-A (KR)
Title: Apparatus and method for transfering substrate
Inventor: CHOI CHUNG SIC
IPC: H01L21/677
Filed: 2007-10-26
Abstract: An apparatus and a method for transferring a substrate are provided to prevent a separation of a substrate due to a shock by stably holding a substrate with an improved grip member. A holding unit(100) includes a supporting member(110), a first grip member(130), a second grip member(120), and a driving member. The supporting member supports a reversed substrate or a substrate to be reversed, and includes a supporting ring(112) in which a plurality of supporting pins(114) is prepared. The supporting ring is fixed in a base(102). The first grip member and the second grip member hold a substrate positioned in the supporting pins of the supporting ring in reversing the holding unit. The first grip member has a first gripper(132) capable of gripping the substrate in two points. The first gripper is connected to a first rod by a connection block of T shape. The driving member includes the first rod, a second rod, a cylinder, and a power transmission member. The second grip member includes two second grippers(124) and a second bracket(122).
Patent KR-20090044409-A (KR)
Inventor: KIM SEO MIN
IPC: H01L21/027
Filed: 2007-10-31
Abstract: 본 발명의 스페이서 패터닝을 이용한 패턴 형성방법은, 미세 패턴이 형성되는 제1 영역 및 패드 패턴이 형성되는 제2 영역을 갖는 기판 위에 패턴대상막을 형성하는 단계와, 패턴대상막 위에 스페이서를 형성하되, 제1 영역에는 미세 패턴 형성용 제1 스페이서를 형성하고, 제2 영역에는 패드 패턴 정렬용 제2 스페이서를 형성하는 단계와, 제2 영역의 상기 패턴대상막 및 제2 스페이서 위에 패드 패턴 형성용 마스크막패턴을 제2 스페이서에 정렬시켜 형성하는 단계와, 그리고 제1 스페이서 및 마스크막패턴을 식각마스크로 패턴대상막에 대한 식각을 수행하여 제1 영역에 상기 제1 스페이서에 의해 한정되는 미세 패턴을 형성하고 제2 영역에 마스크막패턴에 의해 한정되는 패드 패턴을 형성하는 단계를 포함한다. 
       
     스페이서 패터닝 기술(SPT), 미세 패턴, 패드 패턴, 오정렬(misalign)
Patent KR-20090048053-A (KR)
Inventor: LEE SANG HEE
IPC: G11C11/407
Filed: 2007-11-09
Abstract: 본 발명은 외부 클럭신호를 입력받아 그 라이징 에지에 대응하는 제1 클럭신호와 그 폴링 에지에 대응하는 제2 클럭신호를 생성하기 위한 클럭 생성수단과, 상기 제2 클럭신호의 비활성화 구간으로 상기 제1 클럭신호의 활성화 구간을 제한한 제1 구동제어신호와, 상기 제1 클럭신호의 비활성화 구간으로 상기 제2 클럭신호의 활성화 구간을 제한한 제2 구동제어신호를 생성하기 위한 구동제어신호 생성수단, 및 상기 제1 및 제2 구동제어신호에 응답하여 출력 데이터로 출력단을 구동하기 위한 출력 구동수단을 구비하는 반도체 소자를 제공한다. 
       
     데이터 유효 구간, 프리 드라이버, 메인 드라이버
Patent KR-20090048232-A (KR)
Inventor: JUN BYUNG HO
IPC: B22F1/054
Filed: 2007-11-09
Abstract: 본 발명은 금속전구체 및 비극성 용매를 포함하는 제 1 용액을 준비하는 단계; 상기 제 1 용액에 아마이드계 캐핑분자(capping molecule)를 첨가하여 제 2 용액을 준비하는 단계; 및 상기 제 2 용액을 승온시켜 교반하는 단계를 포함하는 금속 나노입자의 제조방법을 제공한다.  본 발명의 금속 나노입자의 제조방법은 금속 나노입자 크기를 쉽게 제어하고 분산성을 높일 수 있는 캐핑분자(capping molecule)를 제공하여 비수계 방식에서 나노입자의 사이즈가 균일한 수 십 나노미터(nm)의 나노입자를 제공할 수 있다. 
       
     금속 나노입자, 비수계, 무극성, 아마이드 구조, 단분자 캐핑, 캐핑분자
Patent KR-20090055179-A (KR)
Title: Apparatus and method for individual current setting for burn-in test
Inventor: YOU HO SANG
IPC: G01R31/26
Filed: 2007-11-28
Abstract: An apparatus and a method for individual current setting for burn-in test are provided to prevent an overcurrent to each device by changing current supply value at each slot according to the number of a device. A current value setting unit(110) for DUT stores an allowable current for each DUT, and a DUT number setting unit(120) stores the number of DUT for burn-in board to be tested from a PC. A current setting unit(130) calculates a current supplied to each slot according to the number of DUT for the burn-in board stored in DUT number setting unit. The current setting unit calculates a current required for the burn-in board by multiplying the allowable current with the number of DUT. A current value controlling element(140) receives the current from the driver circuit.
Patent KR-20090056595-A (KR)
Title: Printable color filter ink composition and color filter using the same ink composition
Inventor: CHA TAE WOON
IPC: B41J2/01
Filed: 2007-11-30
Abstract: An ink composition for a color filter is provided to prevent the change of physical properties of ink by enabling high-density crosslinking after hard baking and to improve stability and discharging property. An ink composition for a color filter comprises a coloring agent, monomer, binder, leveling agent surfactant, thermal initiator and solvent. The half life of the thermal initiator is 65 °C or greater. The thermal initiator is 1,1'-azobis(cyclohexane-1-carbonitrile), 2,2'-azobis(N-butyl-2-methylpropionamide), or 2,2'-azobis(N-cyclohexyl-2-methylpropionamide). The monomer is one or more selected from the group consisting of dipentaerythritol penta- and hexa-acrylate, trimethylolpropane triacrylate and neopentyl glycol hydroxypivalic acid ester di(meth)acrylate.
Patent KR-20080050345-A (KR)
Title: Aryl (thio)ether aryl polysiloxane composition and methods for making and using same
Inventor: MOSLEY DAVID WAYNE
IPC: H01L33/48
Filed: 2007-11-30
Abstract: A cured aryl(thio)ether aryl polysiloxane composition is provided to realize a high refractive index, transparency and excellent thermal stability when used in optical instruments. A cured aryl(thio)ether aryl polysiloxane composition comprises an aryl(thio)ether aryl polysiloxane represented by the formula (I) of (R1nSiO(4-n)/2)a(O(4-p-r)/2R2pSiZrSiR3qO(4-q-r)/2)b. In formula (I), n in an (R1nSiO(4-n)/2) unit represents 0, 1, 2 or 3; each of p and q in an (O(4-p-r)/2R2pSiZrSiR3qO(4-q-r)/2) unit represents 0, 1, 2 or 3, with the proviso that p+q=0 or [8-(2r+1)], wherein r is 1, 2 or 3; Z is selected from -CHR4CHR5-Xs-, arylene, substituted arylene and combinations thereof, wherein -CHR4CHR5-Xs- represents a silicon-bridged alkylene moiety, each X is selected from methylene, phenyl, substituted phenyl, O and combinations thereof, and s is 0 or 1; each of R4 and R5 is selected from H, aryl (thio)ether aryl and alkyl; R1, R2 and R3 include a Si-bonded organic group selected from alkenyl, H, aryl, alkyl, OH, alkoxy, aryloxy, aryl (thio)ether aryl, another hydrocarbon radical and combinations thereof, wherein at least one of R1, R2 and R3 includes a Si-bonded aryl (thio)ether aryl group; and a and b represent the mole fraction of (R1nSiO(4-n)/2) units and (O(4-p-r)/2R2pSiZrSiR3qO(4-q-r)/2) units, respectively, with the proviso that each of a and b ranges from 0 to 1 and a+b=1.
Patent KR-20090058300-A (KR)
Title: Sealant composition having room temperature storage stability for liquid crystal display panel manufacturing
Inventor: PARK MYUNG HWAN
IPC: C09K3/10
Filed: 2007-12-04
Abstract: A sealant composition for manufacturing a liquid crystal display panel is provided to ensure excellent anti-fouling property of a liquid crystal, to cause enough thermosetting reaction in a thermosetting condition (120 °C, 60 minutes) and to show room temperature storage stability. A sealant composition with room temperature storage stability for manufacturing a liquid crystal display panel comprises ultraviolet-curable and thermosetting partial epoxy (meth)acrylate, a photoinitiator, a potential thermosetting material and an inorganic filler. The potential thermosetting material comprises a semicarbazide derivative. The semicarbazide derivative is a compound represented by the following chemical formula (I). In chemical formula (I), R1, R2, R4 and R5 independently show independently C1-4 alkyl group; and R3 shows -NH(CH2)nNH- or -NH-Ph-(CH2)n-Ph-NH-, wherein n is an integer of 1-8.
Patent KR-20090062481-A (KR)
Title: Particle protector
Inventor: SONG JONG KYU
IPC: G01L21/00
Filed: 2007-12-13
Abstract: A dust collecting filter for a vacuum gauge is provided to prevent malfunction of the vacuum gauge by filtering foreign material included in the air flowing in the vacuum gauge. A dust collecting filter(100) for a vacuum gauge comprises a filter housing(110) to which a first connector(116) and a second connector(118) are connected to rotate, a compartment plate(120) installed on a protrusion(113) to partition off an installation space(111), a pair of dust collecting plates(130) forming an air passage between with the installation space, a pair of connecting plates(140) with apertures(141) and coupling holes(143) on the inner side, and a coupling pin(150) whose both ends are fixed to the coupling holes. The filter housing provides a travel path of vacuum pressure a chamber and the vacuum gauge. The dust collecting plate removes foreign material in the air traveling in a vacuum state.
Patent KR-20080058192-A (KR)
Title: Red emitting nitride fluorescent material and white light emitting device using the same
Inventor: YOSHIMATSU RYO
IPC: H01L33/50
Filed: 2007-12-17
Abstract: A red emitting nitride fluorescent material, a white light emitting device using the same are provided to emit red fluorescence, red light of high luminance and white light having an excellent color reproducing property. A white light emitting device includes a blue light emitting device and a fluorescent material. The fluorescent material emits fluorescence when blue light is emitted from the blue light emitting device. The fluorescent material has a red emitting fluorescent material and a green emitting fluorescent material. The red emitting fluorescent material has a red emitting nitride fluorescent material expressed by a following formula (1) Sr1-xAlSi4N7: Eux, where, x is a numerical value greater than zero and less than one.
Patent KR-20090065915-A (KR)
Title: Apparatus and method automatic gain control for up-signal in a wireless communication system by use of orthogonal frequency division multiple access system
Inventor: KIM BYUNG JIK
IPC: H04L27/26
Filed: 2007-12-18
Abstract: An automatic gain control apparatus of an upward signal in a wireless communication system of an orthogonal frequency division multiple access mode, and a method thereof are provided to control signal intensity by using an upward signal section and a downward signal section without violation of a protection time section of a transmission frame. A circulator(328) classifies a received upward signal from a downward signal. Low noise amplifiers(324,330,316) amplify the received upward signal. A first attenuating part(318) and a second attenuating part(322) control attenuation of the amplified upward signal. A RF signal separating part(315) outputs the upward signal to an optical module and a detecting part(312). A peak detecting part measures an intensity value of the upward signal. An A/D converting part converts the measured voltage value into a digital value. A FGPA(Field-Programmable Gate Array) (314) controls the first attenuating part and the second attenuating part based on an upward signal value.
Patent KR-20090067358-A (KR)
Title: Cash transaction machine and method for rejecting paper medium in cash transaction machine
Inventor: LEE WON JOON
IPC: G07F19/00
Filed: 2007-12-21
Abstract: An automatic teller machine and a medium rejecting method of the automatic teller machine are provided to form a large reject box by sparing a space for a reject returning path in the reject box. A first medium transfer device(130) transfers the paper medium from a medium storage(120) by a sheet unit. A temporary stack unit is adjacent to the exit of a first medium transfer device and has a support. The support stacks the paper medium and move up and down. A second medium transfer device receives the paper medium from the rising support and transfers the paper medium to the medium exit. A reject unit(190) is positioned in the lower part of the support and provides the reject inlet to move vertically with the support. When the paper medium is rejected, the support rises to make the reject inlet position adjacently to the outlet of the first medium transfer device. The reject unit includes a reject returning path and a reject box. The reject returning path is mounted in the lower part of the support and move vertically with the support.
Patent KR-20090067764-A (KR)
Title: Driving method for plasma display panel and plasma display apparatus
Inventor: SOH SANG YOON
IPC: G09G3/296
Filed: 2007-12-21
Abstract: A plasma display apparatus is provided to improve the picture quality of image by reducing the flicker generation. A plasma display apparatus comprises: a front substrate displaced on a scan electrode; a rear substrate which faces to the front substrate; discharge gas which is filled between the front substrate and rear substrate. A descent signal which voltage is gradually down and lifting signal which voltage is gradually down during reset period of one sub-field among sub-filed of frame are supplied. The content of xenon(Xe) is denoted the mathematic formula 1. The mathematic formula 1 is 0.01B <= A <= 0.167B. In the formula, A is the size of the voltage variation rate of the lifting signal, and B is the content of xenon.
Patent KR-20090069576-A (KR)
Title: Turbine nozzle for varying partial admission test
Inventor: PARK PYUN GOO
IPC: F02K1/10
Filed: 2007-12-26
Abstract: A turbine nozzle for testing variable part spray ratio is provided to test turbine performance change according to nozzle arrangement more easily because inflow of high-pressure air can be cut off. A turbine nozzle for testing variable part spray ratio comprises a ring-shaped nozzle casing(110) wherein a first grooveis formed in the center of the outer circumference according to the outer circumference and plural through-holes(112) are formed; a ring-shaped collector(120) wherein a second groove corresponding to a first groove is formed along the inner circumference and plural assemblage grooves in which a screw thread is formed in the outer circumference is formed and both ends of the outer circumference thereof are welded with both ends of the nozzle casing; a collector cover(130) wherein an assemblage hole is formed in the corresponding location to the assemblage groove and which is attached on the outer circumference of collector; an assembling bolt which is inserted into the assemblage hole and is screwed in the assemblage groove; and a seal which is interposed between the collector and the collector cover and maintains airtight.
Patent KR-20090069878-A (KR)
Title: The environment affinity type street inlet and this construction technique
Inventor: MOON BONG CHUL
IPC: E03F5/14
Filed: 2007-12-26
Abstract: An environment-friendly rainwater gutter and a construction method thereof are provided to block that the bad smell within the connection pipe is diffused to atmosphere. A construction method of an environment-friendly rainwater gutter comprises a step which excavates the floor of the target ground at a certain depth; a step which sets up the environment-friendly rainwater gutter(S) on the excavating part; a step which fastens the connection pipe(30) in the side of the environment-friendly rainwater gutter; a step which injects mortar into the environment-friendly rainwater gutter and connection pipe through an injection nozzle(60) and welds it; and a step which installs a grating(20) in the top thereof.
Patent KR-20090072723-A (KR)
Title: Display device, hinge for a display device, and plastic hinge
Inventor: KIM JUNG RYUL
IPC: H04N5/655
Filed: 2007-12-28
Abstract: A display apparatus, a hinge device of the display apparatus and a plastic hinge apparatus are provided to generate the frictional force stably while the display apparatus is rotated, and prevent the display apparatus from being rocked. A protrusion unit(11) is formed in a rectangle shape, and includes a coupling part where coupling holes are formed in four corners. A guide unit(14) is prepared on an inner side of a wall(18) so that a hinge shaft(31) can be mounted. A friction member(15) intervenes on a contact surface of a hinge shaft receiving part or a contact surface of a hinge cover. An inserting groove(17) is formed at the center of the friction member. The wall is formed at left/right ends of the hinge shaft receiving part to perform an operation of mounting the hinge shaft.
Patent KR-20090072761-A (KR)
Title: System and method for performing video communicaiton
Inventor: RYOO HO CHANG
IPC: H04N7/14
Filed: 2007-12-28
Abstract: A system and a method for performing video communication are provided to offer caller image from caller terminal before connection of video call between calling terminal and receiving terminal. A terminal(110) accesses to a server through a network, and is provided a video call service. The network(130) comprises a wire/wireless internet network, a CDMA 2000 1x EV-DO network, WCDMA network, and WiBro network etc. The server(120) provides the caller image from the calling terminal to the accepting terminal before connecting the video call between the calling terminal and accepting terminal.
Patent KR-20070019027-A (KR)
IPC: C08L57/06
Filed: 2005-06-23
Abstract: 화학식 1로 표시되는 유기 안티몬화합물 
     [화학식 1] 
     
       
     
     (화학식 중, R 1  및 R 2 는 C 1 ~C 8 의 알킬기, 아릴기, 치환 아릴기 또는 방향족 헤테로고리기를 나타낸다. R 3  및 R 4 는 수소원자 또는 C 1 ~C 8 의 알킬기를 나타낸다. R 5 는 아릴기, 치환 아릴기, 방향족 헤테로고리기, 옥시카르보닐기 또는 시아노기를 나타낸다.), 이것을 사용한 폴리머의 제조방법 및 폴리머. 
     유기 안티몬화합물, 리빙 라디칼 중합개시제, 방향족 헤테로고리기
Patent KR-20070045204-A (KR)
Inventor: SMITH TERRY L
IPC: G02B6/36
Filed: 2005-04-28
Abstract: 광섬유 도파관 조립체(20)는 일체식 정렬 특징부(22)를 구비한다.  도파관 조립체는 정렬 특징부를 형성하기 이전에 기판(26) 상에 도파관을 제작하고, 기판을 노출시키도록 도파관의 일부를 제거하고, 기판에 정렬 특징부를 형성함으로써 형성된다.  일체식 정렬 특징부(22)를 구비한 편평한 도파관 조립체(20)는 에칭 정지층(28)으로 기판(26)을 코팅함으로써 형성된다.  정렬 특징부 패턴(30)은 에칭 정지층(28)에 형성된다.  정렬 특징부 패턴(30)은 포토리소그래피  및 에칭 공정을 이용하여 제작된다.  정렬 특징부 패턴(30)이 에칭 정지층(28)에 제작된 후에, 도파관(32)은 정렬 특징부 패턴(30)을 구비한 에칭 정지층(28)과 기판(26)의 상부 상에 성장된다.  도파관(32)은 그 후 정렬 특징부 패턴(30)이 패턴(30)을 노출시키도록 미리 제작된 영역에 에칭된다.  다른 에칭은 미리 제작된 정렬 특징부 패턴(30)을 이용하여 정확한 정렬 특징부(22)를 생성하도록 수행된다.  정렬 특징부(22)는 V자 홈, U자 홈, 사다리꼴 또는 직사각형 홈이다. 
       
     정렬 특징부, 정렬 특징부 패턴, 에칭 정지층, 포토레지스트, 포토리소그래피, 광섬유
Patent KR-20080015771-A (KR)
Title: Manufacturing method of semiconductor devices
Inventor: ARITA KIYOSHI
IPC: H01L21/78
Filed: 2006-07-10
Abstract: In a method of manufacturing semiconductor chips by dicing individual semiconductor devices from a semiconductor wafer, masks formed for plasma dicing in which a semiconductor wafer is divided by conducting plasma etching are removed by mechanical grinding using a grinding head. Accordingly, by removing the masks for plasma dicing using mechanical grinding, generation of reaction products is prevented when removing the masks, so that the dicing can be conducted without causing quality deterioration due to the accumulated particles.
Patent KR-20070073804-A (KR)
Title: Organic photosensitive devices
Inventor: PEUMANS PETER
IPC: H01L31/04
Filed: 2005-09-15
Abstract: A photoactive device is provided. The device includes a first electrode, a second electrode, and a photoactive region disposed between and electrically connected to the first and second electrodes. The photoactive region further includes an organic donor layer and an organic acceptor layer that form a donor-acceptor heterojunction. The mobility of holes in the organic donor region and the mobility of electrons in the organic acceptor region are different by a factor of at least 100, and more preferably a factor of at least 1000. At least one of the mobility of holes in the organic donor region and the mobility of electrons in the organic acceptor region is greater than 0.001 cm^2/ V-sec, and more preferably greater than 1cm^2 V-sec. The heterojunction may be of various types, includes a planar heterojunction, a bulk heterojunction, a mixed heterojunction, and a hybrid planar-mixed heterojunction.