Intensity Dependence of Current–Voltage Characteristics and Recombination in High-Efficiency Solution-Processed Small-Molecule Solar Cells

Ko Ko Kyaw, Aung; Hwan Wang, Dong; Gupta, Vinay; Lin Leong, Wei; Ke, Lin; C. Bazan, Guillermo; J. Heeger, Alan

doi:10.1021/nn401267s

Public

Intensity Dependence of Current–Voltage Characteristics and Recombination in High-Efficiency Solution-Processed Small-Molecule Solar Cells

Published in ACS Nano • Apr 18, 2013

Authors:

Aung Ko Ko Kyaw

Dong Hwan Wang

Vinay Gupta

Abstract

Solution-processed small-molecule p-DTS(FBTTh2)2:PC71BM bulk heterojunction (BHJ) solar cells with power conversion efficiency of 8.01% are demonstrated. The fill factor (FF) is sensitive to the thickness of a calcium layer between the BHJ layer and the Al cathode; for 20 nm Ca thickness, the FF is ...

Subject

Photocurrent

Open-circuit voltage

Quantum efficiency

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