Electrodes for photovoltaic cells and methods for manufacture thereof

摘要

Disclosed herein is an article comprising a substrate; and a columnar structure, wherein the columnar structure comprises a semi-conductor and is disposed upon the substrate in a manner wherein the longitudinal axis of the columnar structures is substantially perpendicular to the substrate. Disclosed herein is an electrode that comprises a substrate upon which is disposed an electron transport coating, wherein the electron transport coating comprises a columnar structure.