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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Abstract
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 |
|---|---|
| Publication: | CURRENT SCIENCE |
| Publisher: | INDIAN ACAD SCIENCES |
| 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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