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Polymer solar cells: design of materials by donor-acceptor approach

Naik, Mallari A and Raghavendra, M and Siram, Raja Bhaskar Kanth and Patil, Satish (2013) Polymer solar cells: design of materials by donor-acceptor approach. In: CURRENT SCIENCE, 105 (8). pp. 1115-1123.

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Official URL: http://www.currentscience.ac.in/php/toc.php?vol=10...


A brief overview of our group research activities is given and the concept of donor acceptor is described for the development of conjugated polymers for optoelectronic devices. In particular, a new family of conjugated polymers based on dithienopyrrole has been synthesized to demonstrate the concept of donor-acceptor. The dithienopyrrole was coupled to benzodithiophene via Stille coupling to obtain two low band gap polymers P5a and P5b having -C18H37 and -2-ethylhexyl alkyl chain respectively. Both the polymers exhibit absorption within the solar spectrum with an optical band gap below 2 eV. Atomic force microscopy revealed that both the polymers form smooth film with roughness of 2.4 nm and photoluminescence measurement of polymer/fullerene derivative blend film suggests effective dissociation of exciton.

Item Type: Journal Article
Additional Information: copyright for this article belongs to INDIAN ACAD SCIENCES,BANGALORE
Keywords: Benzodithiophene; dithienopyrrole; donor acceptor polymers; organic photovoltaics
Department/Centre: Division of Chemical Sciences > Solid State & Structural Chemistry Unit
Date Deposited: 09 Jan 2014 08:25
Last Modified: 09 Jan 2014 08:28
URI: http://eprints.iisc.ac.in/id/eprint/47970

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