title: Solution-processed organic photovoltaic cells based on a squaraine dye.
abstract: In this work, 2,4-bis[4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl] squaraine (SQ) was systematically studied as an electron donor in solution processed photovoltaic cells, showing power conversion efficiency of >4.0% under AM1.5G 1 sun illumination at room temperature. Low mobilities were found to limit charge transport in the bulk heterojunctions. Efficiency was thus improved to 5.1% at 80 °C mainly due to improvement of photocurrent extraction. We also demonstrated that the SQ compound synthesized via a simple method has high purity, and thus can be used in photovoltaic cells without further purification. Our results suggest the huge potential of SQ and its analogs in organic photovoltaic applications.
authors.affiliation: Department of Organic Device Engineering, Graduate School of Science and Engineering, Research Center for Organic Electronics (ROEL), Yamagata University, Yonezawa, Yamagata, Japan.
authors.forename: Guo
authors.initials: G
authors.lastname: Chen
authors.forename: Hisahiro
authors.initials: H
authors.lastname: Sasabe
authors.forename: Zhongqiang
authors.initials: Z
authors.lastname: Wang
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Wang
authors.forename: Ziruo
authors.initials: Z
authors.lastname: Hong
authors.forename: Junji
authors.initials: J
authors.lastname: Kido
authors.forename: Yang
authors.initials: Y
authors.lastname: Yang
mesh_terms: D000627:Aminophenols / Q000138:chemical synthesis / Q000737:chemistry*; D003503:Cyclobutanes / Q000138:chemical synthesis / Q000737:chemistry*; D011211:Electric Power Supplies; D005456:Fluorescent Dyes / Q000737:chemistry*; D008027:Light; D015394:Molecular Structure; D010636:Phenols; D012996:Solutions; D013499:Surface Properties; D013696:Temperature
chemical_list: C578774:2,4-bis(4-(N,N-diisobutylamino)-2,6-dihydroxyphenyl)squaraine; D000627:Aminophenols; D003503:Cyclobutanes; D005456:Fluorescent Dyes; D010636:Phenols; D012996:Solutions; C480596:squaraine