Parallel pool analysis of transient spectroscopy reveals origins of and perspectives for ZnO hybrid solar cell performance enhancement using semiconducting surfactants

Michael Meister, Jason J. Amsden*, Ian A. Howard, Insun Park, Changhee Lee, Do Y. Yoon, Frédéric Laquai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Recently, the performance of ZnO nanocrystals as an electron acceptor in a solar cell device was significantly increased by a semiconducting surfactant. Here we show, using transient absorption spectroscopy and a parallel pool analysis, that changes in the quantum efficiency of charge generation account for the performance variation among semiconducting-surfactant-coated, surfactant-coated, and uncoated ZnO nanoparticles. We demonstrate that even better surfactant design to suppress fast recombination could still lead to a further doubling of device efficiency.

Original languageEnglish (US)
Pages (from-to)2665-2670
Number of pages6
JournalJournal of Physical Chemistry Letters
Volume3
Issue number18
DOIs
StatePublished - Sep 20 2012

Keywords

  • Excited States
  • Photochemistry
  • Spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Physical and Theoretical Chemistry

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