Research Papers

Improving the efficiency of a poly(3-hexylthiophene)-CuInS2 photovoltaic device by incorporating graphene nanopowder

[+] Author Affiliations
Anita Kumari

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

Inderpreet Singh

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

University of Delhi, SGTB Khalsa College, Department of Electronics, Delhi 110007, India

Neetu Prasad, Swati Nagpal

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

Shiv Kumar Dixit

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

Peta Koteswara Rao

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

Pramod Kumar Bhatnagar

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

Parmatma Chandra Mathur

University of Delhi South Campus, Department of Electronic Science, Benito Juarez Road, New Delhi 110021, India

Charanjit Singh Bhatia

National University of Singapore, Department of Electrical and Computer Engineering, Singapore 117576, Singapore

J. Nanophoton. 8(1), 083092 (Mar 26, 2014). doi:10.1117/1.JNP.8.083092
History: Received January 4, 2014; Revised February 28, 2014; Accepted March 5, 2014
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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.

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© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Anita Kumari ; Inderpreet Singh ; Neetu Prasad ; Shiv Kumar Dixit ; Peta Koteswara Rao, et al.
"Improving the efficiency of a poly(3-hexylthiophene)-CuInS2 photovoltaic device by incorporating graphene nanopowder", J. Nanophoton. 8(1), 083092 (Mar 26, 2014). ; http://dx.doi.org/10.1117/1.JNP.8.083092


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