JOURNAL ARTICLE

Self-powered high responsivity ultraviolet radiation sensor by coupling ZnO based piezoelectric nanogenerator and photodetector.

  • Published In: Applied Physics Letters, 2024, v. 124, n. 10. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Mahapatra, Abhinav; Ajimsha, R. S.; Misra, Pankaj 3 of 3

Abstract

The article focuses on the development of a self-powered ultraviolet (UV) sensor achieved by coupling a zinc oxide (ZnO)-based piezoelectric nanogenerator (PENG) with a ZnO-based metal-semiconductor-metal (MSM) photodetector through impedance matching. This sensor operates without an external power source by converting ambient mechanical vibrations into electrical energy, enabling real-time UV radiation monitoring with high sensitivity (~93%) and voltage responsivity (7.14 V mW⁻¹ cm⁻²), outperforming previously reported ZnO-based self-powered UV sensors. The device exhibits a fast response time of 0.67 seconds and recovery time of 4 seconds, attributed to the continuous and crystalline nature of the ZnO thin film fabricated via RF magnetron sputtering. Its environmentally stable and biocompatible properties make it suitable for remote sensing applications such as environmental monitoring and ozone layer assessment.

Additional Information

  • Source:Applied Physics Letters. 2024/03, Vol. 124, Issue 10, p1
  • Document Type:Article
  • Subject Area:Earth and Atmospheric Sciences
  • Publication Date:2024
  • ISSN:0003-6951
  • DOI:10.1063/5.0191001
  • Accession Number:175939743
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