An Azulene-Containing Low Bandgap Small Molecule for Organic Photovoltaics with High Open-Circuit Voltage

Yao Chen; Youqin Zhu; Daobin Yang; Suling Zhao; Lei Zhang; Lin Yang; Jianglin Wu; Yan Huang; Zheng Xu; Zhiyun Lu

doi:10.1002/chem.201603399

An Azulene-Containing Low Bandgap Small Molecule for Organic Photovoltaics with High Open-Circuit Voltage

Chemistry. 2016 Oct 4;22(41):14527-30. doi: 10.1002/chem.201603399. Epub 2016 Aug 17.

Authors

Yao Chen¹, Youqin Zhu², Daobin Yang¹, Suling Zhao², Lei Zhang¹, Lin Yang¹, Jianglin Wu¹, Yan Huang^{3

4}, Zheng Xu², Zhiyun Lu¹

Affiliations

¹ Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China.
² Key Laboratory of Luminescence and Optical Information (Ministry of Education), Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing, 100044, P. R. China.
³ Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China. [email protected].
⁴ Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, 350007, P. R. China. [email protected].

PMID: 27490139
DOI: 10.1002/chem.201603399

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 .

Keywords: azulene; dyes; electrochemistry; low bandgap; organic photovoltaics.