Control of charge separation by electric field manipulation in polymer-oxide hybrid organic photovoltaic bilayer devices

Matthew S. White, Dana C. Olson, Nikos Kopidakis, Alexandre M. Nardes, David S. Ginley, Joseph J. Berry

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Hybrid polymer/oxide organic photovoltaic (h-OPV) devices have the potential to replace the organic acceptor component with an inorganic, nano-structured oxide. This approach leverages the positive attributes of inorganic materials while maintaining the potential processing advantages of organic electronics. By manipulating the carrier concentration of the oxide acceptor layer in bilayer h-OPV devices, we demonstrate control of the electric field at the planar donor-acceptor interface. The effects of the electric field can be observed in both the J SC and the fill factor of the h-OPV devices. Furthermore, interfacial layers of TiOx are used on ZnO to prevent recombination of geminate electron-hole pairs. It is shown that interfacial TiO x successfully inhibits recombination only when the electric field is strong enough to sufficiently transfer charges to the ZnO layer. If the interfacial electric field is insufficient, then the TiO x instead serves to enhance recombination at the donor-acceptor interface.

Original languageEnglish
Pages (from-to)1257-1265
Number of pages9
JournalPhysica Status Solidi (A) Applications and Materials Science
Volume207
Issue number5
DOIs
Publication statusPublished - May 2010
Externally publishedYes

Fingerprint Dive into the research topics of 'Control of charge separation by electric field manipulation in polymer-oxide hybrid organic photovoltaic bilayer devices'. Together they form a unique fingerprint.

Cite this