TITLE

Electrophotonic enhancement of bulk heterojunction organic solar cells through photonic crystal photoactive layer

AUTHOR(S)
Tumbleston, John R.; Ko, Doo-Hyun; Samulski, Edward T.; Lopez, Rene
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/26/2009, Vol. 94 Issue 4, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present one- (1D) and two-dimensional (2D) periodic nanostructured designs for organic photovoltaics where a photonic crystal is formed between blended poly-3-hexylthiophene/[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) and nanocrystalline zinc oxide. Absorption enhancements over the full absorption range of P3HT:PCBM of 20% (one polarization) and 14% are shown for the 1D and 2D structures, respectively. These improvements result in part from band edge excitation of quasiguided modes. The geometries are also shown to create excitons 26% (1D) and 11% (2D) closer to P3HT:PCBM exit interfaces indicating further photovoltaic improvement.
ACCESSION #
36435000

 

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