High open-circuit voltage poly(ethylene bithienylene):fullerene solar cells

J. Cremer, P. Baeuerle, M.M. Wienk, R.A.J. Janssen

Research output: Contribution to journalArticleAcademicpeer-review

88 Citations (Scopus)

Abstract

Thin film polymer solar cells offer the prospect of providing easy, soln.-based processing and low-temp. manufg. in combination with good efficiencies. Recently, bulk heterojunction solar cells based on blends of regioregular poly(3-hexylthiophene) (P3HT) as p-type material and [6,6]-phenyl-C61-butyric acid Me ester (PCBM) as n-type material have attracted considerable interest. The present study shows that alternating ethynylene and 4,3'-dihexyl-2,2'-bithien-5,5'-diyl along the chain as in poly(ethylene bithienylene) (PEBT) lowers the HOMO energy level by 0.3 eV compared to P3HT. When implemented in bulk heterojunction devices with PCBM, PEBT exhibits the expected increase in open-circuit voltage to values slightly over 1.0 V.
Original languageEnglish
Pages (from-to)5832-5834
JournalChemistry of Materials
Volume18
Issue number25
DOIs
Publication statusPublished - 2006

Fingerprint

Dive into the research topics of 'High open-circuit voltage poly(ethylene bithienylene):fullerene solar cells'. Together they form a unique fingerprint.

Cite this