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Title: Improving the efficiency of a poly(3-hexylthiophene)- CuInS2 photovoltaic device by incorporating graphene nanopowder
Authors: Kumari, A.
Singh, I.
Prasad, N.
Dixit, S.K.
Rao, P.K.
Bhatnagar, P.K.
Mathur, P.C.
Bhatia, C.S. 
Nagpal, S.
Keywords: charge transport.
conducting polymer
organic photovoltaic
quantum dots
Issue Date: 2014
Citation: Kumari, A., Singh, I., Prasad, N., Dixit, S.K., Rao, P.K., Bhatnagar, P.K., Mathur, P.C., Bhatia, C.S., Nagpal, S. (2014). Improving the efficiency of a poly(3-hexylthiophene)- CuInS2 photovoltaic device by incorporating graphene nanopowder. Journal of Nanophotonics 8 (1) : -. ScholarBank@NUS Repository.
Abstract: In the present work, the effect of incorporation of graphene on the poly(3-hexylthiophene) (P3HT)CuInS2 quantum dot (CIS QD)-based solar cell has been studied. For this purpose, the concentration of graphene is varied from 0 to 0.01% w/w in P3HT-CIS (1:0.5) film. It is found that graphene does not deteriorate the absorption of the composite film. It assists in dissociating the photogenerated excitons (both in P3HT and QDs) owing to its two-dimensional structure and high electron affinity as is evident by photoluminescence (PL) quenching. At 0.01% w/w concentration of graphene about 95% of PL is quenched. The electrical characteristics show that the incorporation of graphene enhances the efficiency of the device by establishing interconnected conducting pathways in the volume of polymer matrix. The maximum efficiency is observed to be 1.5% at 0.005% w/w content of graphene. However, at higher concentration, i.e., 0.01% w/w, the device starts deteriorating. © Society of Photo-Optical Instrumentation Engineers.
Source Title: Journal of Nanophotonics
ISSN: 19342608
DOI: 10.1117/1.JNP.8.083092
Appears in Collections:Staff Publications

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