Solar cell and method of manufacturing the same

摘要

A solar cell is disclosed. The solar cell includes a transparent conductive layer formed on a substrate, microstructures protruding vertically aslant from a surface of the transparent conductive layer, an electron transport layer configured to cover the microstructures and formed of an electron transport metal oxide, a light absorber adhered to inner pores and a surface of the electron transport layer, a hole transport layer configured to cover the surface of the electron transport layer and formed of a hole transport material, and an electrode formed on the hole transport layer. In the solar cell, the thickness of a light absorption layer can be maximized to obtain a high current density and high photoelectric conversion efficiency.

主权项

1. A solar cell comprising:
a substrate; a transparent conductive layer disposed on the substrate; microstructures extending substantially perpendicular to a surface of the transparent conductive layer; an electron transport layer comprising an electron transport metal oxide disposed to fill at least part of space between the microstructures and cover the microstructures; a light absorber adhered to inner pores and a surface of the electron transport layer; a solid hole transport layer disposed to fill inner pores of the electron transport layer and cover the surface of the electron transport layer to which the light absorber is attached; and an electrode disposed on the hole transport layer, wherein the electron transport layer comprises: an electron transport thin film configured to coat the microstructures and the surface of the transparent conductive layer; and an electron transport nanoparticle layer disposed on the electron transport thin film and having a porosity high than that of the electron transport thin film.