Fabrication and photoelectric properties of bio-inspired honeycomb film based on semiconducting polymer

Xiaofeng Fang; Xiaoju Men; Haobin Chen; Yu-Mo Zhang; Hang Sun; Shengyan Yin; Weiping Qin

doi:10.1016/j.jcis.2017.10.007

Fabrication and photoelectric properties of bio-inspired honeycomb film based on semiconducting polymer

J Colloid Interface Sci. 2018 Feb 15:512:1-6. doi: 10.1016/j.jcis.2017.10.007. Epub 2017 Oct 4.

Authors

Xiaofeng Fang¹, Xiaoju Men¹, Haobin Chen¹, Yu-Mo Zhang², Hang Sun³, Shengyan Yin⁴, Weiping Qin⁵

Affiliations

¹ State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, China.
² College of Chemistry, Jilin University, Changchun 130012, China.
³ Key Laboratory of Bionic Engineering (Ministry of Education), College of Biological and Agricultural Engineering, Jilin University, Changchun, Jilin 130022, China.
⁴ State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, China. Electronic address: syyin@jlu.edu.cn.
⁵ State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, China. Electronic address: wpqin@jlu.edu.cn.

PMID: 29049896
DOI: 10.1016/j.jcis.2017.10.007

Abstract

Organic semiconducting materials have attracted significant attention for use in optoelectronic devices, as they can significantly improve device performance. Herein, a donor-acceptor conjugated polymer (poly(isoindigo-thiopheneylbenzothiadiazole, PID-TBT) was synthesized, which has strong and broad absorption in the visible region (400-800nm). The band gap of PID-TBT is 1.65eV. The PID-TBT honeycomb film with a porous structure was easily fabricated by the breath figure method. Compared with the smooth PID-TBT film, the honeycomb film shows significant enhancement in light capture capability and the efficiency of photoelectric conversion. The reflectance of the honeycomb film is reduced by 7% and the photocurrent is tenfold higher than that of the smooth film. Apart from designing new molecules by complex reactions, this work demonstrated that photoelectric conversion can be easily improved by introducing micro or nanostructures into devices.

Keywords: Bio-inspired; Donor–acceptor conjugated polymer; Honeycomb structure; Photoelectric conversion.