Patent ID: 7399654

Claim:
A method for fabricating an optical sensitive layer of a solar cell having silicon quantum dots, comprising steps of: (a) obtaining a substrate stacked with at least a layer of indium tin oxide (ITO) and a layer of titanium oxide (TiO 2 ); (b) placing said substrate in a reaction chamber; (c) by using a precursor of silane (SiH4) and using a dilution gas of argon in said reaction chamber, forming a nucleation layer of silicon (Si) quantum dots, a growth layer of Si quantum dots and a passivation layer of Si quantum dots on said TiO 2 layer of said substrate through a vapor deposition and multi-pulses to directly grow a structure having distributed plural Si quantum dots; and (d) through single pulses, directly depositing a film having SiC x quantum dots outside of said structure having distributed plural Si quantum dots to obtain a distribution layer of Si quantum dots on a surface of said layer of TiO 2 .