Photovoltaic devices with depleted heterojunctions and shell-passivated nanoparticles
US10784388B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Jun 24, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/948
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Photovoltaic cells are fabricated in which the compositions of the light-absorbing layer and the electron-accepting layer are selected such that at least one side of the junction between these two layers is substantially depleted of charge carriers, i.e., both free electrons and free holes, in the absence of solar illumination. In further aspects of the invention, the light-absorbing layer is comprised of dual-shell passivated quantum dots, each having a quantum dot core with surface anions, an inner shell containing cations to passivate the core surface anions, and an outer shell to passivate the inner shell anions and anions on the core surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.