Optical and electrical properties of 80 MeV Si8+ ions irradiated Ga-doped zinc stannate films

被引：0
作者：
Chauhan, Neha [1 ]
Kumar, Ravi [2 ]
Asokan, K. [3 ,4 ]
Singh, A.P. [1 ]
机构：
[1] Dr B R Ambedkar National Institute of Technology, Punjab, Jalandhar
[2] National Institute of Technology, Himachal Pradesh, Hamirpur
[3] Inter University Accelerator Centre, Aruna Asaf Ali Marg, Delhi, New Delhi
[4] Department of Physics and Centre for Interdisciplinary Research, University of Petroleum and Energy Studies (UPES), Uttarakhand, Dehradun
来源：
Applied Physics A: Materials Science and Processing | 2025年 / 131卷 / 05期
关键词：
Bandgap; Swift heavy ion irradiation; Transparent conducting oxides (TCO); Zinc stannate;
D O I：
10.1007/s00339-025-08486-y
中图分类号：
学科分类号：
摘要：
We studied the effects of 80 MeV Si8+ ions on the structural characteristics, surface morphology, optical and electrical properties of 200 nm thick Ga-doped zinc stannate films, fabricated using the pulsed laser deposition technique. The analysis of the glancing incidence X-ray diffraction patterns reveal that the pristine crystalline films became amorphous after Si8+ ion irradiation, and the surface images from atomic force microscopy display an enhancement in surface roughness with increasing ion fluences. The optical studies show a decrease in the bandgap from 3.62 to 3.42 with irradiation and quenching of the luminescent defects deep in the bandgap. The resistivity of the films decreased with Ga-doping and swift heavy ion (SHI) irradiation. These modifications in the physical properties due to irradiation are understood based on irradiation induced amorphization and thermal spike model. It was found that Ga-doping and SHI irradiation produce similar effects on the electrical and optical properties of the zinc stannate films. These amorphous films may provide a better alternative to the crystalline zinc stannate films, which have potential applications as transparent conducting oxide. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2025.
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