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Issue 15, 2018, Issue in Progress
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High-detectivity perovskite-based photodetector using a Zr-doped TiOx cathode interlayer

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Abstract

We investigated the incorporation of Zr into TiOx cathode interlayers used as hole-blocking layers in an organometallic halide perovskite-based photodetector. The device configuration is ITO/PEDOT:PSS/CH3NH3PbIxCl3−x/PC60BM/Zr–TiOx/Al. The use of Zr–TiOx in the perovskite photodetector reduces the leakage current and improves carrier extraction. The performance of the perovskite photodetector was confirmed by analyzing the current–voltage characteristics, impedance behaviors, and dynamic characteristics. The device with a Zr–TiOx layer has a high specific detectivity of 1.37 × 1013 Jones and a bandwidth of 2.1 MHz at a relatively low reverse bias and light intensity. Therefore, it can be effectively applied to devices such as image and optical sensors.

Graphical abstract: High-detectivity perovskite-based photodetector using a Zr-doped TiOx cathode interlayer

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Publication details

The article was received on 24 Jan 2018, accepted on 12 Feb 2018 and first published on 22 Feb 2018


Article type: Paper
DOI: 10.1039/C8RA00730F
RSC Adv., 2018,8, 8302-8309
  • Open access: Creative Commons BY license
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    High-detectivity perovskite-based photodetector using a Zr-doped TiOx cathode interlayer

    C. H. Ji, K. T. Kim and S. Y. Oh, RSC Adv., 2018, 8, 8302
    DOI: 10.1039/C8RA00730F

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