Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Organic photovoltaic bulk heterojunctions with spatially varying composition.

Published

Author(s)

Paul M. Haney

Abstract

We consider models of organic bulk heterojunction photovoltaics with spatially varying compo- sition of donor/acceptor materials. We find analytic expressions for the current-voltage relation in simplifed cases for two blend geometries, and find the effect of varying composition on charge transport is minimal. We then present numerical results for various blend compositions, including the experimentally relevant composition of a donor-rich region near the cathode (a "skin layer" of donor material). We find the primary effect of this variation on device performance derives from its effect on photocharge generation, and that the effect of a skin layer on device performance is small.
Citation
Applied Physics Letters
Volume
110
Issue
2

Keywords

Organic photovoltaic
Created July 21, 2011, Updated February 19, 2017