Abstract: A high efficiency colored solar cell is described. The high efficiency colored solar cell includes a substrate, a first antireflection layer formed on the substrate, a second antireflection layer formed on the first antireflection layer. A color of a reflecting light of the high efficiency colored solar cell can be controlled according to the combination of the first antireflection layer and the second antireflection layer.

Abstract: The present invention discloses a solar cell having a multi-layered nanostructure that is used to generate, transport, and collect electric charges. The multi-layered nanostructure comprises a cathode, a hole-blocking layer, a photo-active layer, and an anode. The hole-blocking layer is made of the material selected from the group consisting of the following: inorganic semiconducting material, metal oxide material and mixture of inorganic and metal oxide materials. The photo-active layer comprises a porous body and a conjugated polymer filler. The porous body is used as an electron acceptor while the conjugate polymer filler is as an electron donor. The conjugated polymer filler is formed in the pores of the porous body by in-situ polymerization. In addition, the invention discloses a method for preparing the solar cell having a multi-layered nanostructure.