Advanced Heterojunction Structure of Polymer Photovoltaic Cell Generating High Photocurrent with Internal Quantum Efficiency Approaching 100%

Authors

  • Hui Joon Park,

    1. Macromolecular Science and Engineering, The University of Michigan, Ann Arbor, Michigan 48109, USA
    Current affiliation:
    1. Portland Technology Development, Logic Technology Development, Intel Corporation, Hillsboro, Oregon 97124, USA
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  • Jae Yong Lee,

    1. Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, Michigan 48109, USA
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  • Taehwa Lee,

    1. Mechanical Engineering, The University of Michigan, Ann Arbor, Michigan 48109, USA
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  • L. Jay Guo

    Corresponding author
    1. Macromolecular Science and Engineering, The University of Michigan, Ann Arbor, Michigan 48109, USA
    2. Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, Michigan 48109, USA
    3. Mechanical Engineering, The University of Michigan, Ann Arbor, Michigan 48109, USA
    • Macromolecular Science and Engineering, The University of Michigan, Ann Arbor, Michigan 48109, USA.
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Abstract

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An advanced heterojunction structure is introduced for polymer photovoltaic cells that can approach almost 100% internal quantum efficiency (IQE) even with over 300 nm thick electron-donor layer for adequate light absorption. These devices show superior charge transport properties as well as non-Langevin type bimolecular recombination. The resultant short circuit current of the device is about 50% higher than that of the thermally annealed BHJ polymer PV cell.

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