Flexible UV sensor based on nanostructured ZnO thin film SAW device

Sameer Ahmad Hasan, Hamdi Torun, Des Gibson, Qiang Wu, Michael D. Cooke, YongQing Fu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Flexible ultraviolet (UV) light sensor was developed using ZnO thin film based surface acoustic wave (SAW) deposited onto low cost, commercial and thin aluminum foil (50 um thickness). ZnO nanorods were further grown on the surface of the device by a simplified hydrothermal process for enhancing the sensitivity. The zero order antisymmetric (A0) and symmetric (S0) lamb wave modes were identified at 13 MHz and 30 MHz respectively. These modes were used to obtain their frequency responses at various UV light intensities. UV sensing performance was investigated at different flexible/bending positions. The results showed good sensitivity in various flexible positions, moreover, the nanorods improved the sensitivity of the sensor by 59% and 44% for A0 and S0 modes, respectively. In addition, they possessed very good repeatability and stability, hence they have great potential for flexible and wearable UV light sensing applications.
Original languageEnglish
Title of host publication2019 IEEE Jordan International Joint Conference on Electrical Engineering and Information Technology (JEEIT)
EditorsK.M. Jaber
PublisherIEEE
Pages85-90
Number of pages6
ISBN (Electronic)9781538679425, 9781538679418
ISBN (Print)9781538679432
DOIs
Publication statusPublished - 20 May 2019
Externally publishedYes

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Keywords

  • Zinc oxide
  • II-VI semiconductor materials
  • Resonant frequency
  • Surface acoustic wave devices
  • Surface acoustic waves
  • Sensitivity
  • Sensors

Cite this

Hasan, S. A., Torun, H., Gibson, D., Wu, Q., Cooke, M. D., & Fu, Y. (2019). Flexible UV sensor based on nanostructured ZnO thin film SAW device. In K. M. Jaber (Ed.), 2019 IEEE Jordan International Joint Conference on Electrical Engineering and Information Technology (JEEIT) (pp. 85-90). IEEE. https://doi.org/10.1109/JEEIT.2019.8717373