n-Doping of thermally polymerizable fullerenes as an electron transporting layer for inverted polymer solar cells

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Namchul Cho
  • Steven K. Hau
  • Kung-Shih Chen
  • Tae-Wook Kim
  • Joshua A. Davies
  • David F. Zeigler

Detail(s)

Original languageEnglish
Pages (from-to)6956-6961
Journal / PublicationJournal of Materials Chemistry
Volume21
Issue number19
Online published4 Apr 2011
Publication statusPublished - 21 May 2011
Externally publishedYes

Abstract

A novel [6,6]-phenyl-C61-butyric acid methyl styryl ester (PCBM-S) was synthesized and employed as an electron transporting interfacial layer for bulk heterojunction polymer solar cells with an inverted device configuration. After the deposition of PCBM-S film from solution, the styryl groups of PCBM-S were polymerized by post-thermal treatment to form a robust film which is resistive to common organic solvents. This allows the solution processing of upper bulk heterojunction film without eroding the PCBM-S layer. Additionally, the PCBM-S was n-doped with decamethylcobaltocene (DMC) to increase the conductivity of the film, which resulted in a significantly improved power conversion efficiency from 1.24% to 2.33%. The improved device performance is due to the decrease of series resistance and improved electron extraction property of the n-doped PCBM-S film. © 2011 The Royal Society of Chemistry.

Citation Format(s)

n-Doping of thermally polymerizable fullerenes as an electron transporting layer for inverted polymer solar cells. / Cho, Namchul; Yip, Hin-Lap; Hau, Steven K.; Chen, Kung-Shih; Kim, Tae-Wook; Davies, Joshua A.; Zeigler, David F.; Jen, Alex K.-Y.

In: Journal of Materials Chemistry, Vol. 21, No. 19, 21.05.2011, p. 6956-6961.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review