Narrow Energy Gap Polymers with Absorptions up to 1 200 nm and their Photovoltaic Properties | Zendy

Yi Hunan | Zendy; Johnson Richard G. | Zendy; Iraqi Ahmed | Zendy; Mohamad David | Zendy; Royce Richard | Zendy; Lidzey David G. | Zendy

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Narrow Energy Gap Polymers with Absorptions up to 1 200 nm and their Photovoltaic Properties

Author(s) -

Yi Hunan,

Johnson Richard G.,

Iraqi Ahmed,

Mohamad David,

Royce Richard,

Lidzey David G.

Publication year - 2008

Publication title -

macromolecular rapid communications

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.348

H-Index - 154

eISSN - 1521-3927

pISSN - 1022-1336

DOI - 10.1002/marc.200800440

Subject(s) - carbazole , materials science , pedot:pss , band gap , photochemistry , acceptor , copolymer , polymer , energy conversion efficiency , open circuit voltage , alkyl , photovoltaic system , quinoxaline , polymer chemistry , optoelectronics , chemistry , voltage , organic chemistry , physics , electrical engineering , engineering , quantum mechanics , composite material , condensed matter physics

A series of donor/acceptor carbazole copolymers comprising alternating 6,7‐diphenyl‐4,9‐bis‐(thiophen‐2‐yl)‐[1,2,5]thiadiazolo[3,4‐g]quinoxaline and 3,6‐dimethyl‐9‐alkyl‐ 9H ‐carbazole repeat units ( P1 ), or 3,6‐dimethyl‐9‐triarylamino‐ 9H ‐carbazole repeat units ( P2 ), or 9‐triarylamino‐ 9H ‐carbazole repeat units ( P3 ) has been prepared following Suzuki polymerization procedures. P3 absorbs light up to 1 200 nm and has an energy gap of 1.1 eV, while P1 and P2 have energy gaps of 1.3 and 1.25 eV, respectively. Photovoltaic cells with ITO/PEDOT:PSS/ P3 :PCBM (1:1 w/w)/Ca showed an open‐circuit voltage of 0.4 V under white light illumination, power conversion efficiency of 0.61%, and short‐circuit current of 5.2 mA · cm −2 .

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