Transient photocurrent response of small-molecule bulk heterojunction solar cells

Jason Seifter; Yanming Sun; Alan J Heeger

doi:10.1002/adma.201305160

Transient photocurrent response of small-molecule bulk heterojunction solar cells

Adv Mater. 2014 Apr 23;26(16):2486-93. doi: 10.1002/adma.201305160. Epub 2014 Jan 27.

Authors

Jason Seifter¹, Yanming Sun, Alan J Heeger

Affiliation

¹ Physics Department, University of California at Santa Barbara, Santa Barbara, CA, 93106, USA.

PMID: 24464733
DOI: 10.1002/adma.201305160

Abstract

Transient photocurrent measurements are used to investigate the effects of processing additives on charge transport in small molecule bulk heterojunction solar cells. The additive decreased carrier recombination rates and improved carrier mobility, both of which are beneficial to carrier extraction. Geminate recombination of charge transfer excitons is ruled out by the data.

Keywords: bulk heterojunctions; charge transport; organic solar cells; processing additives; transient photocurrent.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.