Ultraviolet-to-infrared broadband photodetector and imaging application based on a perovskite single crystal

  • Xu M
  • Wang X
  • Weng J
  • et al.
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Abstract

The organic-inorganic hybrid perovskite CH 3 NH 3 PbBr 3 (MAPbBr 3 ) has been well developed in the X-ray to visible light band due to its superior optoelectronic properties, but this material is rarely studied in the infrared band. In this paper, a UV-NIR broadband optical detector based on MAPbBr 3 single crystal is studied, and the response range can reach the near-infrared region. In the visible light band, the optical response of the device is mainly caused by the photoelectric effect; in the near-infrared band, the optical response of the device is mainly caused by the thermal effect. The carrier response of MAPbBr 3 material under different wavelengths of light was investigated using a non-contact measurement method (optical pump terahertz (THz) probe spectroscopy). This paper also builds a set of photoelectric sensor array components, and successfully realizes the conversion of optical image signals to electrical image signals in the visible light band and infrared band. The experimental results show that MAPbBr 3 crystals provide a new possibility for UV-NIR broadband photodetectors.

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Xu, M., Wang, X., Weng, J., Shen, J., Hou, Y., & Zhang, B. (2022). Ultraviolet-to-infrared broadband photodetector and imaging application based on a perovskite single crystal. Optics Express, 30(22), 40611. https://doi.org/10.1364/oe.472249

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