Cyanothiophene-based low band-gap polymer for organic solar cells

We report the preparation of a new acceptor unit, 3-alkoxy-4-cyanothiophene, and a 3-alkoxy-4-cyanothiophene-based low band-gap polymer (PBDT-CT) with a deep HOMO energy level (-5.5 eV). A bulk heterojunction solar cell containing PBDT-CT and PC sub(61)BM was found to exhibit a high open circuit vol...

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Veröffentlicht in:	RSC advances 2013-01, Vol.3 (19), p.6799-6802
Hauptverfasser:	Clement, J. Arul, Kim, Heung Gyu, Sim, Myungsun, Kang, Boseok, Cho, Kilwon
Format:	Artikel
Sprache:	eng
Schlagworte:	Energy levels Heterojunctions Open circuit voltage Photovoltaic cells Solar cells Volatile organic compounds
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Zusammenfassung:	We report the preparation of a new acceptor unit, 3-alkoxy-4-cyanothiophene, and a 3-alkoxy-4-cyanothiophene-based low band-gap polymer (PBDT-CT) with a deep HOMO energy level (-5.5 eV). A bulk heterojunction solar cell containing PBDT-CT and PC sub(61)BM was found to exhibit a high open circuit voltage (V sub(oc)) of 0.90 V and an efficiency of 3.36%.
ISSN:	2046-2069 2046-2069
DOI:	10.1039/c3ra40258d