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J Am Chem Soc. 2011 Jun 1;133(21):8142-5. doi: 10.1021/ja202791n. Epub 2011 May 11.

A naphthodithiophene-diketopyrrolopyrrole donor molecule for efficient solution-processed solar cells.

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  • 1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA.

Abstract

We report the synthesis, characterization, and first implementation of a naphtho[2,3-b:6,7-b']dithiophene (NDT)-based donor molecule in highly efficient organic photovoltaics (OPVs). When NDT(TDPP)(2) (TDPP = thiophene-capped diketopyrrolopyrrole) is combined with the electron acceptor PC(61)BM, a power conversion efficiency (PCE) of 4.06 ± 0.06% is achieved-a record for a PC(61)BM-based small-molecule OPV. The substantial PCE is attributed to the broad, high oscillator strength visible absorption, the ordered molecular packing, and an exceptional hole mobility of NDT(TDPP)(2).

PMID:
21545133
DOI:
10.1021/ja202791n
[PubMed - indexed for MEDLINE]
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