Fused aromatic thienopyrazines: structure, properties and function
Type
ArticleKAUST Grant Number
KUS-C1-015-21Date
2010Permanent link to this record
http://hdl.handle.net/10754/598391
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Recent development of a fused aromatic thieno[3.4-b]pyrazine system and their application in optoelectronic devices are reviewed. Introduction of a fused aromatic unit followed by side chain engineering, dramatically enhanced the charge carrier mobility in thin film transistor devices and mobilities up to 0.2 cm2/Vs were achieved. The optoelectronic properties of these fused aromatic thienopyrazine polymers (Eg = 1.3 to 1.6 eV, HOMO = -4.9 to -5.2 V) were tuned by introduction of various fused aromatic rings within thienopyrazine. By balancing the fundamental properties of these polymers, both high charge carrier mobilities and moderate PCEs in solar cells were achieved. Further, effects of copolymerizing units are discussed. Low band gap semiconducting polymer (Eg ∼ 1 eV) with high field effect mobility (0.044 cm2/Vs) was obtained using cyclopentadithiophene as copolymerizing unit. Finally, a molecular design approach to enhance the absorption coefficients is discussed, which resulted in improved power conversion efficiency in bulk heterojunction solar cells. © 2010 The Royal Society of Chemistry.Citation
Mondal R, Ko S, Bao Z (2010) Fused aromatic thienopyrazines: structure, properties and function. J Mater Chem 20: 10568. Available: http://dx.doi.org/10.1039/c0jm01840f.Sponsors
This publication was partially based on work supported by the Center for Advanced Molecular Photovoltaics, Award No KUS-C1-015-21, made by King Abdullah University of Science and Technology (KAUST). We also acknowledge the help of Michael F. Toney, Jean-Luc Brédas, Michael D. McGehee, Eric Verploegen and Anatoliy N. Sokolov.Publisher
Royal Society of Chemistry (RSC)Journal
Journal of Materials Chemistryae974a485f413a2113503eed53cd6c53
10.1039/c0jm01840f