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Benzotriazole-Bridged Sensitizers Containing a Furan Moiety for Dye-Sensitized Solar Cells with High Open-Circuit Voltage Performance

  1. Jiangyi Mao,
  2. Fuling Guo,
  3. Weijiang Ying,
  4. Dr. Wenjun Wu,
  5. Dr. Jing Li,
  6. Prof. Jianli Hua*

Article first published online: 10 FEB 2012

DOI: 10.1002/asia.201100967

Issue

Chemistry – An Asian Journal

Chemistry – An Asian Journal

Volume 7, Issue 5, pages 982–991, May 2012

Additional Information

How to Cite

Mao, J., Guo, F., Ying, W., Wu, W., Li, J. and Hua, J. (2012), Benzotriazole-Bridged Sensitizers Containing a Furan Moiety for Dye-Sensitized Solar Cells with High Open-Circuit Voltage Performance. Chem. Asian J., 7: 982–991. doi: 10.1002/asia.201100967

Author Information

  1. Key Laboratory for Advanced Materials, Institute of Fine Chemicals and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237 (China), Fax: (+86) 21-64252758

*Key Laboratory for Advanced Materials, Institute of Fine Chemicals and Department of Chemistry, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237 (China), Fax: (+86) 21-64252758

Publication History

  1. Issue published online: 26 APR 2012
  2. Article first published online: 10 FEB 2012
  3. Manuscript Received: 28 NOV 2011

Funded by

  • NSFC/China. Grant Numbers: 2116110444, 21172073, 61006048
  • National Basic Research 973 Program. Grant Number: 2011CB808400
  • Fundamental Research Funds for the Central Universities. Grant Numbers: WJ0913001, WJ1014025
  • Ministry of Education of China. Grant Number: 20090074110004
  • Scientific Committee of Shanghai. Grant Number: 10520709700

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Keywords:

  • dyes/pigments;
  • electrochemistry;
  • electron transfer;
  • heterocycles;
  • solar cells

Abstract

Two new benzotriazole-bridged sensitizers are designed and synthesized (BTA-I and BTA-II) containing a furan moiety for dye-sensitized solar cells (DSSCs). Two corresponding dyes (BTA-III and BTA-IV) with a thiophene spacer were also synthesized for comparison. All of these dyes performed as sensitizers for DSSCs, and the photovoltaic performance data of these benzotriazole-bridged dyes showed a high open-circuit voltage (Voc: 804–834 mV). Among the four dyes, DSSCs based on BTA-II, with a furan moiety and branched alkyl chain, showed the highest Voc (834 mV), a photocurrent density (Jsc) of 12.64 mA cm−2, and a fill factor (FF) of 0.64, corresponding to an overall conversion efficiency (η) of 6.72 %. Most importantly, long-term stability of the BTA-I–IV-based DSSCs with ionic-liquid electrolytes under 1000 h light-soaking was demonstrated, and BTA-II exhibited better photovoltaic performance of up to 5.06 % power conversion efficiency.

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