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Journal of Photonics for Energy

Improved power conversion efficiency for bulk heterojunction solar cells incorporating CdTe-CdSe nanoheterostructure acceptors and a conjugated polymer donor
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Paper Abstract

We report photovoltaic devices based on composites of a branched nanoheterostructure containing a CdTe core and CdSe arms, CdTe(c)-CdSe(a), combined with either poly(3-hexylthiophene), P3HT, or poly[2,6-(4,4-bis-(2-ethylhexyl)-4<italic<H</italic<-cyclopenta[2,1-<italic<b</italic<;3,4-<italic<b′</italic<]dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)], PCPDTBT, with solar power conversion efficiencies of 1.2% and 1.8%, respectively. A comparison with previously reported composite devices of a related branched nanoheterostructure: CdSe(c)-CdTe(a) reveals an improved device performance that is attributed to a better electron percolation pathway provided by the dominant, higher electron affinity CdSe arms of the nanoheterostructures.

Paper Details

Date Published: 24 March 2015
PDF: 9 pages
J. Photon. Energy. 5(1) 057409 doi: 10.1117/1.JPE.5.057409
Published in: Journal of Photonics for Energy Volume 5, Issue 1
Show Author Affiliations
Smita Dayal, National Renewable Energy Lab. (United States)
Haizheng Zhong, Beijing Institute of Technology (China)
Nikos Kopidakis, National Renewable Energy Lab. (United States)
Gregory D. Scholes, Princeton Univ. (United States)
Garry Rumbles, National Renewable Energy Lab. (United States)

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