TITLE

Efficiency enhancement of polymer photovoltaic devices hybridized with ZnO nanorod arrays by the introduction of a vanadium oxide buffer layer

AUTHOR(S)
Takanezawa, Kazuko; Tajima, Keisuke; Hashimoto, Kazuhito
PUB. DATE
August 2008
SOURCE
Applied Physics Letters;8/11/2008, Vol. 93 Issue 6, p063308
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The introduction of an electron-blocking layer of vanadium oxide between the organic layer and the Ag electrode was studied as a means of improving the performance of bulk heterojunction photovoltaic devices based on poly(3-hexylthiophene): (6,6)-phenyl C61 butyric acid methyl ester hybridized with vertically aligned ZnO nanorod arrays. The power conversion efficiency was further improved to 3.9% by applying a short circuit current density of 10.4 mA cm-2, an open circuit voltage of 0.58 V, and a fill factor of 65% under AM1.5 100 mW cm-2 irradiation, owing to the electron collection “antenna” effect of the ZnO nanorod arrays.
ACCESSION #
33999996

 

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