"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Symmetrical acceptor-donor-acceptor type benzodithiophene based organic semiconductors for solution processed bulk heterojunction solar cells: optimization of open-circuit photovoltage with long alkyl

WENQIN LI1, ZIHUA WU1,* , MIN WU2, XIONGMIN CAI1, JINMIN WANG1,*

Affiliation

  1. School of Environmental and Materials Engineering, College of Engineering, Shanghai Polytechnic University, Shanghai 201209, China
  2. Department of Chemistry and Molecular Biology, University of Gothenburg, 40530, Göteborg, Sweden

Abstract

Symmetrical acceptor-donor-acceptor type benzodithiophene cored organic semiconductor with cyclopentadithiophene as π bridge, rhodanine as end group was synthesized. Their optical, electrochemical properties and photovoltaic performance acting as donor material in solution processed bulk heterojunction (BHJ) organic solar cells were investigated systematically. Theory calculation study was performed using density functional (DFT) and TD-DFT. WS-53 exhibited an ideal absorption profile in chloroform, with a theory voltage of 1.17 V for WS-53/ PC71BM based BHJ solar cells. Under annealing treatment at 80ºC, an overall power conversion efficiency of 1.04% was obtained with photocurrent density of 4.25 mA cm-2 and voltage of 0.94 V..

Keywords

BHJ solar cells, A-D-A type semiconductors, Benzodithiophene, Cyclopentadithiophene.

Citation

WENQIN LI, ZIHUA WU, MIN WU, XIONGMIN CAI, JINMIN WANG, Symmetrical acceptor-donor-acceptor type benzodithiophene based organic semiconductors for solution processed bulk heterojunction solar cells: optimization of open-circuit photovoltage with long alkyl, Optoelectronics and Advanced Materials - Rapid Communications, 11, 11-12, November-December 2017, pp.659-664 (2017).

Submitted at: Feb. 27, 2017

Accepted at: Nov. 28, 2017