Ultraviolet photodetector based on NaTaO3/ZnO composite with enhanced photoelectric performance
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School of Physics Science and Technology, Xinjiang University, Urumqi 830046, China

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    Abstract:

    NaTaO3/ZnO composites were synthesized via a two-step hydrothermal method. Then ultraviolet detectors based on pure NaTaO3, ZnO and their composites with different mole ratio were fabricated. Among all the devices, the 1:1 NaTaO3/ZnO possessed a high photo-to-dark current ratio and stable periodic photoresponse. The photoresponse is facilitated by the synergistic effect between different components and the improved ZnO morphology in the composites, the reduced dimensionality in which provides a straight electron conduction pathway. Additionally, the 1:1 NaTaO3/ZnO detector also exhibits a low dark current less than 1 nA at 5 V bias, which benefits a lot to the low power dissipation and high sensitivity of devices. These results reveal that NaTaO3/ZnO composites are good candidates for the fabrication of ultraviolet detectors.

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ZHAO Yun-fei, ZHANG Min, YANG Lin-yu, ZHANG Jun, WANG Zhao-jun. Ultraviolet photodetector based on NaTaO3/ZnO composite with enhanced photoelectric performance[J]. Optoelectronics Letters,2021,17(2):75-79

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History
  • Received:February 08,2020
  • Revised:April 05,2020
  • Adopted:
  • Online: January 04,2021
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