Special Section on Hybrid Organic-Inorganic Solar Cells

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

[+] Author Affiliations
Smita Dayal, Nikos Kopidakis, Garry Rumbles

National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, Colorado 80401, United States

Haizheng Zhong

Micro/Nano Research Center, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China

Gregory D. Scholes

Princeton University, Department of Chemistry, Princeton, New Jersey 08544, United States

J. Photon. Energy. 5(1), 057409 (Mar 24, 2015). doi:10.1117/1.JPE.5.057409
History: Received November 21, 2014; Accepted February 19, 2015
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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)-4H-cyclopenta[2,1-b;3,4-b′]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.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Smita Dayal ; Haizheng Zhong ; Nikos Kopidakis ; Gregory D. Scholes and Garry Rumbles
"Improved power conversion efficiency for bulk heterojunction solar cells incorporating CdTe-CdSe nanoheterostructure acceptors and a conjugated polymer donor", J. Photon. Energy. 5(1), 057409 (Mar 24, 2015). ; http://dx.doi.org/10.1117/1.JPE.5.057409


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