Photovoltaic Performance of an Ultrasmall Band Gap Polymer
- 26 January 2009
- journal article
- research article
- Published by American Chemical Society (ACS) in Organic Letters
- Vol. 11 (4) , 903-906
Abstract
A conjugated polymer (PBTTQ) that consists of alternating electron-rich bithiophene and electron-deficient thiadiazoloquinoxaline units was synthesized via Yamamoto polymerization with Ni(cod)2 and provides a band gap of 0.94 eV. This represents one of the smallest band gaps obtained for a soluble conjugated polymer. When applied in a bulk heterojunction solar cell together with [84]PCBM as the electron acceptor, the polymer affords a response up to 1.3 μm.Keywords
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