Roles of Au and Ag nanoparticles in efficiency enhancement of poly(3-octylthiophene)/C 60 bulk heterojunction photovoltaic devices

Kyungkon Kim, David L. Carroll

Research output: Contribution to journalArticlepeer-review

165 Scopus citations

Abstract

We obtained improved poly(3-octylthiophene) (P3OT)/ C60 bulk heterojunction photovoltaic devices by doping with stable and highly electrically conductive Au and Ag nanoparticles. Doped devices showed 50-70% improved efficiency, with the Ag nanoparticles exhibiting the greatest increase in efficiency. We suggest that a dominate mechanism for the efficiency enhancement of doped photovoltaic device is the improved electrical conductivity through the introduction of "dopant" levels within the band gap of the P3OT.

Original languageEnglish
Article number203113
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number20
DOIs
StatePublished - 14 Nov 2005

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