Article

Synthesis of three new 1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl) pyrrole-based donor polymers and their bulk heterojunction solar cell applications

  1. Vellaiappillai Tamilavan1,
  2. Myungkwan Song2,
  3. Sung-Ho Jin2,
  4. Myung Ho Hyun1,*

Article first published online: 13 OCT 2010

DOI: 10.1002/pola.24360

Issue

Journal of Polymer Science Part A: Polymer Chemistry

Journal of Polymer Science Part A: Polymer Chemistry

Volume 48, Issue 23, pages 5514–5521, 1 December 2010

Additional Information

How to Cite

Tamilavan, V., Song, M., Jin, S.-H. and Hyun, M. H. (2010), Synthesis of three new 1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl) pyrrole-based donor polymers and their bulk heterojunction solar cell applications. J. Polym. Sci. A Polym. Chem., 48: 5514–5521. doi: 10.1002/pola.24360

Author Information

  1. 1

    Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University, Busan 690-735, Republic of Korea

  2. 2

    Department of Chemistry Education and Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan 609-735, Korea

*Department of Chemistry, Chemistry Institute for Functional Materials, Pusan National University, Busan 690-735, Republic of Korea

Publication History

  1. Issue published online: 28 OCT 2010
  2. Article first published online: 13 OCT 2010
  3. Manuscript Accepted: 28 AUG 2010
  4. Manuscript Received: 28 JUN 2010

Funded by

  • National Research Foundation of Korea. Grant Number: 2010-0008-269
  • Korea government (MEST). Grant Number: M10600000157-06J0000-15710

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Keywords:

  • bulk heterojunction solar cells;
  • conjugated polymers;
  • copolymerization;
  • 1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl)pyrrole-based polymers;
  • solar cells;
  • synthesis

Abstract

A series of three new 1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl)pyrrole-based polymers such as poly[1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl)pyrrole] (PTPT), poly[1,4-(2,5-bis(octyloxy)phenylene)-alt-5,5'-(1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl)pyrrole)] (PPTPT), and poly[2,5-(3-octylthiophene)-alt-5,5'-(1-(2,6-diisopropylphenyl)-2,5-di(2-thienyl)pyrrole)] (PTTPT) were synthesized and characterized. The new polymers were readily soluble in common organic solvents and the thermogravimetric analysis showed that the three polymers are thermally stable with the 5% degradation temperature >379 °C. The absorption maxima of the polymers were 478, 483, and 485 nm in thin film and the optical band gaps calculated from the onset wavelength of the optical absorption were 2.15, 2.20, and 2.13 eV, respectively. Each of the polymers was investigated as an electron donor blending with PC70BM as an electron acceptor in bulk heterojunction (BHJ) solar cells. BHJ solar cells were fabricated in ITO/PEDOT:PSS/polymer:PC70BM/TiOx/Al configurations. The BHJ solar cell with PPTPT:PC70BM (1:5 wt %) showed the power conversion efficiency (PCE) of 1.35% (Jsc = 7.41 mA/cm2, Voc = 0.56 V, FF = 33%), measured using AM 1.5G solar simulator at 100 mW/cm2 light illumination. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010

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