Highly Efficient Visible-Blind Organic Ultraviolet Photodetectors

Authors

  • H.-W. Lin,

    1. Department of Electrical Engineering, Graduate Institute of Electro-optical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • S.-Y. Ku,

    1. Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • H.-C. Su,

    1. Department of Electrical Engineering, Graduate Institute of Electro-optical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • C.-W. Huang,

    1. Department of Electrical Engineering, Graduate Institute of Electro-optical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • Y.-T. Lin,

    1. Department of Electrical Engineering, Graduate Institute of Electro-optical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • K.-T. Wong,

    1. Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • C.-C. Wu

    1. Department of Electrical Engineering, Graduate Institute of Electro-optical Engineering and Graduate Institute of Electronics Engineering, National Taiwan University, Taipei, Taiwan 106, Taiwan
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  • The authors gratefully acknowledge the financial support from the National Science Council of Republic of China and Evervictory Acutech Corporation. Supporting Information is available online from Wiley InterScience or from the author.

Abstract

original image

Highly efficient organic UV photodetectors that are not sensitive to visible radiation (“visible-blind”) but to UV-A radiation are fabricated using an organic donor–acceptor couple. High external quantum efficiencies (EQEs) comparable to commercial GaN devices, but covering the entire UV-A range (see Figure), make these devices promising for environmental and biomedical UV-sensing applications.

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