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A Fast Responsive Ultraviolet Sensor from mSILAR-Processed Sn-ZnO.

A Fast Responsive Ultraviolet Sensor from mSILAR-Processed Sn-ZnO.

Authors :
Thomas, Deepu
Vijayalakshmi, K.
Sadasivuni, Kishor
Thomas, Ajith
Ponnamma, Deepalekshmi
Cabibihan, John-John
Source :
Journal of Electronic Materials; Nov2017, Vol. 46 Issue 11, p6480-6487, 8p, 3 Color Photographs, 1 Chart, 2 Graphs
Publication Year :
2017

Abstract

Microwave-assisted successive ionic layer adsorption and reaction was employed to synthesize Sn-ZnO (tin-doped zinc oxide), and its sensitivity to ultraviolet radiation is compared with zinc oxide (ZnO). The sensing films were made by the dip-coated method on an indium titanium oxide glass substrate, and the sensing performance was monitored using the 300-700 nm wavelength of UV-Vis light. Excellent sensitivity and recovery were observed for the Sn-doped ZnO sensor device, especially at 380 nm wavelength of ultraviolet (UV) light (response and recovery time 2.26 s and 8.63 s, respectively, at 5 V bias voltage). The variation in photocurrent with respect to dark and light illumination atmosphere was well illustrated based on the Schottky and inter-particle network effects. Doping of Sn on ZnO nanoparticles varied the surface roughness and crystallite size as observed from scanning electron microscopic and x-ray diffraction studies. Here, we demonstrate a simple and economical fabrication technique for designing a high-performance UV light sensor. The developed device works at room temperature with high durability and stability. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03615235
Volume :
46
Issue :
11
Database :
Complementary Index
Journal :
Journal of Electronic Materials
Publication Type :
Academic Journal
Accession number :
125430457
Full Text :
https://doi.org/10.1007/s11664-017-5680-9