TITLE

Plasmon enhancement of bulk heterojunction organic photovoltaic devices by electrode modification

AUTHOR(S)
Xiaohong Chen; Chunchang Zhao; Rothberg, Lewis; Man-Kit Ng
PUB. DATE
September 2008
SOURCE
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p123302
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The efficiency of photovoltaic devices fabricated from blends of regioregular poly(3-hexylthiophene) and {6,6}-phenyl C61-butyric acid methylester was improved by introducing a thin Au layer and LiF spacer prior to evaporation of Al contacts onto the polymer blend. Using an optimized Au/LiF/Al electrode gave a 20%–30% improved power efficiency over devices with only LiF/Al for AM1.5 irradiation. The increased efficiency is primarily due to the increased photocurrent, and we present spectroscopic data suggesting that this can be ascribed to plasmon enhancement of the polymer absorption by nanotextured Au.
ACCESSION #
34647447

 

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