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Luminescent Polythiophene‐Based Main‐Chain Polyoxometalate‐Containing Conjugated Polymers with Improved Solar‐Cell Performance
Author(s) -
Wang Ruixin,
Li Yong,
Shetye Kuldeep,
Dutta Tanmoy,
Jin Lu,
Li Shaohua,
Peng Zhonghua
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402839
Subject(s) - polythiophene , polymer , conjugated system , chemistry , pedot:pss , polyoxometalate , stille reaction , luminescence , polymer chemistry , polymer solar cell , covalent bond , fluorescence , copolymer , photochemistry , hybrid solar cell , triphenylamine , solar cell , conductive polymer , chemical engineering , organic chemistry , materials science , optoelectronics , catalysis , physics , quantum mechanics , engineering
New polythiophene‐based hybrid conjugated polymers ( P2 and P3 ) containing different amounts of hexamolybdate clusters, which are covalently embedded in the main chain, were successfully synthesized by using the Stille coupling reaction. These soluble hybrid polymers show absorptions in the 400–550 nm range in dilute solutions, which extend beyond 700 nm in thin films. The hybrid polymers are moderately fluorescent in dilute solutions, and the embedded polyoxometalates only partially quench the backbone fluorescence. Simple single‐layer photovoltaic cells with a device configuration of ITO/PEDOT:PSS/( P2 or P3 )/Ca/Al were fabricated, and a power conversion efficiency of 0.24 % was obtained for P2 , which is among the highest values reported for POM‐containing hybrid polymers including hybrid diblock copolymers.