Patent ID: 9105787
Filing Date: 2015-08-11
Classification: H01L,Y02E

Abstract:
1. A photovoltaic device comprising: a photocell having i) a photoactive layer, ii) a plurality of high-aspect-ratio nanostructures on one or more surfaces of the photoactive layer configured to act as a scattering media for incident light, wherein the plurality of high-aspect-ratio nanostructures includes a first group of high-aspect-ratio nanostructures and a second group of high-aspect-ratio nanostructures iii) a metal layer on, and in direct contact with, the photoactive layer, and iv) electrical leads to directly contacting the metal layer and the photoactive layer, wherein a Schottky junction is formed between the metal layer and the photoactive layer, and wherein the metal layer is formed directly on a portion of the photoactive layer with the metal layer completely covering the first group of high-aspect-ratio nanostructures and leaves the second group of high-aspect-ratio nanostructures completely uncovered the first group of high-aspect-ratio nanostructures and leaves the second group of high-aspect-ratio nanostructures by the metal layer and thus free to aid in capturing and absorbing incident light and to generate charge carrier electron-hole pairs that can be transported to the electrical leads.