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Highly Sensitive, Air-Stable Photodetectors Based on Single Organic Sub-micrometer Ribbons Self-Assembled through Solution Processing

Authors

  • Yan Zhou,

    1. Key Laboratories of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry Peking University, Beijing 100871 (PR China)
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  • Lei Wang,

    1. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology Key Lab of Specially Functional Materials Ministry of Education, Guangzhou 510640 (PR China)
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  • Jian Wang,

    Corresponding author
    1. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology Key Lab of Specially Functional Materials Ministry of Education, Guangzhou 510640 (PR China)
    • Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology Key Lab of Specially Functional Materials Ministry of Education, Guangzhou 510640 (PR China).
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  • Jian Pei,

    Corresponding author
    1. Key Laboratories of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry Peking University, Beijing 100871 (PR China)
    • Key Laboratories of Bio-organic Chemistry and Molecular Engineering of the Ministry of Education, College of Chemistry Peking University, Beijing 100871 (PR China).
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  • Yong Cao

    1. Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology Key Lab of Specially Functional Materials Ministry of Education, Guangzhou 510640 (PR China)
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  • This research was financially supported by the Major State Basic Research Development Program (No. 2006CB921602 and 2007CB808000), and the 973 Project (No. 2002CB613400) from the Ministry of Science and Technology and by the National Natural Science Foundation of China.

Abstract

original image

Highly sensitive, air-stable photodetectors based on single sub-micrometer organic crystalline ribbons self-assembled and deposited on the substrate via simple solution processing are achieved on both glass substrates and flexible substrates. The photoconductivity gain is about 1.3 × 103, while the responsivity is about 420 A W−1 at a field of 2 × 104 V cm−1. The highest on/off ratio reaches around 1000.

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