Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.2965468
Title: The use of thermal initiator to make organic bulk heterojunction solar cells with a good percolation path
Authors: Tong, S.W. 
Zhang, C.F. 
Jiang, C.Y.
Ling, Q.D. 
Kang, E.T. 
Chan, D.S.H. 
Zhu, C. 
Issue Date: 2008
Source: Tong, S.W., Zhang, C.F., Jiang, C.Y., Ling, Q.D., Kang, E.T., Chan, D.S.H., Zhu, C. (2008). The use of thermal initiator to make organic bulk heterojunction solar cells with a good percolation path. Applied Physics Letters 93 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.2965468
Abstract: A simple method is developed to make an interpenetrating network of poly(3-hexylthiophene-2,5-diyl) (P3HT) and fullerene (C60) by mixing P3HT solution with a thermal initiator 2, 2′ -azobis(isobutyronitrile) (AIBN). After mild annealing, the release of nitrogen from AIBN increases the roughness of P3HT dramatically. Significant photoluminescence quenching between the roughened donor P3HT and overlaying acceptor C60 is related to the significant increment of donor-acceptor interfacial areas. Based on this interpenetrated network of P3HT/C60, more than threefold increase in the photovoltaic efficiency of devices is achieved compared with bilayer structure. Fill factor is also improved, implying good percolation path in this heterojunction structure. © 2008 American Institute of Physics.
Source Title: Applied Physics Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/51057
ISSN: 00036951
DOI: 10.1063/1.2965468
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