Patent ID: 8198531
Filing Date: 2012-06-12
Classification: H01G,H01L,Y02E

Abstract:
1. A solar cell having multi-layered structure, the multi-layered structure comprising: a cathode; a photo-active layer comprising a tree-like nanostructure array and a conjugate polymer filler for absorbing light wherein each said tree-like nanostructure comprises a trunk part and at least one branch part is used as an electron acceptor where the spacing between said trunk parts in the array is smaller than or equal to 300 nm, the diameter of each said trunk part is more than or equal to 30 nm, the length of each said trunk part is larger than or equal to 50 nm, the diameter of each said branch part is less than or equal to 10 nm, the length of each said branch part is less than or equal to 30 nm, said conjugate polymer filler covers and fills in said tree-like nanostructure array and is selected from the group consisting of the following or any combination of the following: polyanilines and derivatives thereof; polypyrroles and derivatives thereof; polythiophenes and derivatives thereof; poly(p-phenylene vinylene) and derivatives thereof; and polymer, oligomer or copolymer containing the structure of aniline, pyrrole, thiophene, p-phenylene vinylene or derivatives thereof and said conjugate polymer filler is used as an electron donor, said trunk part is formed in-situ on the surface of said cathode so as to be regularly arranged on the surface of said cathode and is used to provide a long straight transport pathway to transport electrons, and the large contact area between said branch part and said conjugate polymer filler provides electron-hole separation; a hole transport layer; and an anode.