Flexible UV sensor based on nanostructured ZnO thin film SAW device

Hasan, Sajidah, Torun, Hamdi, Gibson, Des, Wu, Qiang, Cooke, Michael D. and Fu, Yong Qing (2019) Flexible UV sensor based on nanostructured ZnO thin film SAW device. In: JEEIT 2019 - IEEE Jordan International Joint Conference on Electrical Engineering and Information Technology, 9th - 11th April 2019, Amman, Jordan.

Full text not available from this repository.

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.

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	Flexible SAW devices, UV sensing, ZnO nanorods, ZnO thin film
Subjects:	H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Paul Burns
Date Deposited:	21 Aug 2019 16:11
Last Modified:	10 Oct 2019 15:48
URI:	http://nrl.northumbria.ac.uk/id/eprint/40436

Downloads