Octahexyltetrabenzotriazaporphyrin: A Discotic Liquid Crystalline Donor for High-performance Small-molecule Solar Cells

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Author(s)

    • Dao Quang-Duy
    • Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University
    • Watanabe Koichi
    • Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University
    • Itani Hiromichi
    • Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University|Research Institute for Ubiquitous Energy Devices, Kansai Center, National Institute of Advanced Industrial Science and Technology
    • Sosa-Vargas Lydia
    • Research Institute for Ubiquitous Energy Devices, Kansai Center, National Institute of Advanced Industrial Science and Technology
    • Fujii Akihiko
    • Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University
    • Shimizu Yo
    • Research Institute for Ubiquitous Energy Devices, Kansai Center, National Institute of Advanced Industrial Science and Technology
    • Ozaki Masanori
    • Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University

Abstract

Phase-transition, optical, and photoconductive properties of a discotic liquid crystalline donor, nonperipherally substituted octahexyltetrabenzotriazaporphyrin (C6TBTAPH<sub>2</sub>), was characterized for high-performance solution-processed bulk heterojunction (BHJ) organic solar cells (OSCs). C6TBTAPH<sub>2</sub> exhibited high hole and electron mobilities at room temperature, exceeding 0.18 cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>, and strong absorption at both B-band and Q-band. A high power conversion efficiency of 4.9% under AM 1.5G irradiation (100 mW cm<sup>−2</sup>) was achieved for BHJ OSCs utilizing phase-separated nanomaterials comprising C6TBTAPH<sub>2</sub> and 1-(3-methoxycarbonyl)propyl-1-phenyl-(6,6)C<sub>71</sub>.

Journal

  • Chemistry Letters

    Chemistry Letters 43(11), 1761-1763, 2014

    The Chemical Society of Japan

Codes

  • NII Article ID (NAID)
    130004703959
  • Text Lang
    ENG
  • ISSN
    0366-7022
  • Data Source
    J-STAGE 
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