Journal
NANOTECHNOLOGY
Volume 21, Issue 14, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/0957-4484/21/14/145203
Keywords
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Funding
- National Science Council [NSC 97-2120-M-009-006]
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We have fabricated inverted heterojunction solar cell devices incorporating [6,6]-phenyl-C-61-butyric acid methyl ester/poly(3-hexylthiophene) core/shell nanorod arrays by using an anodic alumina oxide template. The internal quantum efficiencies and external quantum efficiencies of these core/shell nanorod inverted solar cells were higher than those of the corresponding conventional inverted bulk heterojunction device. The optimized nanorod array structure had a high hole mobility that was over one order magnitude greater than that of the conventional bulk heterojunction structure, as determined by fitting the dark J-V curves into the space charge limited current model. The more efficient carrier transport of the device incorporating the core/shell nanorod arrays provided it with both a higher short-circuit current density and power conversion efficiency.
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