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Influence of thiophene spacer on conjugated polymer for organic photovoltaics

Chandrashekara, GK and Murali, MG and Rao, Arun D and Ramamurthy, Praveen C (2017) Influence of thiophene spacer on conjugated polymer for organic photovoltaics. In: 43rd IEEE Photovoltaic Specialists Conference (PVSC), JUN 05-10, 2016, Portland, OR, pp. 1642-1644.

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Official URL: http://dx.doi.org/ 10.1109/PVSC.2016.7749900

Abstract

A new D-A structured conjugated polymers PBDTT-TPD and PBDTT-TTPDT based on electron-rich benzo1,2-b: 4,5-b'] dithiophene (BDT) conjugated with alkylthiophene side chains with an electron-deficient 1,3-dibromo-5-(2-octyl)-4H-thieno3,4-c]pyrrole-4,6(5H)-dione (TPD) and thiophene as a spacer were designed and synthesized via Stille coupling reaction. The polymer exhibits a broad UV-Visible absorption spectra. The HOMO and LUMO energy levels of PBDTT-TPD and PBDTT-TTPDT are -5.22 eV, -3.22 eV and -5.72 eV, -3.55 eV respectively. The PCEs of PBDTT-TPD was found to be 1.9% efficiency.

Item Type: Conference Proceedings
Additional Information: 43rd IEEE Photovoltaic Specialists Conference (PVSC), Portland, OR, JUN 05-10, 2016
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 10 Jun 2017 04:41
Last Modified: 01 Mar 2019 06:58
URI: http://eprints.iisc.ac.in/id/eprint/57199

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