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Organic photodetectors based on transparent electrodes for application in ultraviolet light detection

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Abstract

A high performance heterojunction organic ultraviolet photodetector based on NPB and Bphen has been fabricated. A transparent conducting polymer PEDOT:PSS coated quartz substrate instead of ITO coated glass substrate as anode is propitious to detect shorter wavelength ultraviolet light. As a result, the device shows a low dark current density, a high responsivity of 502 mA/W and a detectivity of 2.67×1012 cm Hz1/2/W which is illuminated by a 220 nm ultraviolet light with an intensity of 1.6 mW/cm2. Moreover, the performance of the PEDOT:PSS transparent electrode device is better than the semi-transparent Al electrode device electrode because of the higher transmittance and electrode properties.

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Authors and Affiliations

  1. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing, 100044, China

    Qian Dai, Lu Zhu, Jian Sun, XiQing Zhang & YongSheng Wang

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  1. Qian Dai
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  2. Lu Zhu
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  3. Jian Sun
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  4. XiQing Zhang
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  5. YongSheng Wang
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Correspondence to XiQing Zhang.

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Dai, Q., Zhu, L., Sun, J. et al. Organic photodetectors based on transparent electrodes for application in ultraviolet light detection. Sci. China Technol. Sci. 55, 1551–1555 (2012). https://doi.org/10.1007/s11431-012-4806-9

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  • DOI: https://doi.org/10.1007/s11431-012-4806-9

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