title: An Azulene-Containing Low Bandgap Small Molecule for Organic Photovoltaics with High Open-Circuit Voltage.
abstract: A simple azulene-containing squaraine dye (AzUSQ) showing bandgap of 1.38 eV and hole mobility up to 1.25×10(-4)  cm(2)  V(-1)  s(-1) was synthesized. With its low bandgap, an organic photovoltaic (OPV) device based on it has been made that exhibits an impressive open-circuit voltages (Voc ) of 0.80 V. Hence, azulene might be a promising structural unit to construct OPV materials with simultaneous low bandgap, high hole mobility and high Voc .
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Key Laboratory of Luminescence and Optical Information (Ministry of Education), Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China.
authors.forename: Youqin
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
authors.forename: Daobin
authors.initials: D
authors.lastname: Yang
authors.affiliation: Key Laboratory of Luminescence and Optical Information (Ministry of Education), Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China.
authors.forename: Suling
authors.initials: S
authors.lastname: Zhao
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
authors.forename: Lin
authors.initials: L
authors.lastname: Yang
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
authors.forename: Jianglin
authors.initials: J
authors.lastname: Wu
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China. huangyan@scu.edu.cn.|Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, 350007, P. R. China. huangyan@scu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Huang
authors.affiliation: Key Laboratory of Luminescence and Optical Information (Ministry of Education), Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
authors.forename: Zhiyun
authors.initials: Z
authors.lastname: Lu
keywords: azulene; dyes; electrochemistry; low bandgap; organic photovoltaics