Effect of aging under ambient conditions on the optical properties of Al-doped ZnO thin films deposited by direct current sputtering

被引:0
作者
Barhoumi, A. [1 ]
Leroy, G. [2 ]
Duponchel, B. [3 ]
Gest, J. [2 ]
Guermazi, S. [1 ]
机构
[1] Univ Sfax, Unite Rech Phys Mat Isolants & Semiisolants PMISI, Sfax 3018, Tunisia
[2] ULCO, UDSMM, F-62228 Calais, France
[3] ULCO, UDSMM, F-59140 Dunkerque, France
关键词
PULSED-LASER DEPOSITION; ELECTRICAL-PROPERTIES; TRANSPARENT; TEMPERATURE; GROWTH;
D O I
10.1140/epjp/i2017-11285-3
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Transparent and conductive Al-doped ZnO (AZO) thin films were deposited on a glass substrate by direct current sputtering. In a previous study, we noted the influence of time on structural and electrical characteristics of films. In the present paper, the effect of a two-year aging under ambient conditions on the optical properties was investigated. A global improvement of the optical properties of AZO thin films was observed. The optical transmittance spectra revealed a high transmittance more than 90% in the Vis-NIR regions and a high absorption in the ultraviolet range. It is assumed that the crystallinity segregation leads to the decrease of optical scattering. The results from the optical measurements showed a reorganization of the structure leading to the degradation of the structural homogeneity. Nevertheless, the evolution of the figure of merit shows that Al-doped ZnO is a good candidate for the manufacturing and the commercialization of transparent conducting oxide devices.
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页数:10
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