Band-gap modified Al-doped Zn1-xMgxO transparent conducting films deposited by pulsed laser deposition

被引:124
作者
Matsubara, K [1 ]
Tampo, H [1 ]
Shibata, H [1 ]
Yamada, A [1 ]
Fons, P [1 ]
Iwata, K [1 ]
Niki, S [1 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan
关键词
D O I
10.1063/1.1784544
中图分类号
O59 [应用物理学];
学科分类号
摘要
Al-doped Zn1-xMgxO films have been deposited on glass substrates at a substrate temperature of 200 degreesC by a pulsed laser deposition system. A resistivity of 3 x 10(-4) Omega cm was obtained at x = 0.06. Film resistivity was found to increase with further increases in Mg composition. The maximum band gap of films with a resistivity rho less than or equal to 1 x 10(-3) Omega cm was found to be 3.97 eV, demonstrating band-gap engineering possibilities in the range of E-g = 3.5-3.97 eV with a resistivity rho less than or equal to 1 x 10(-3) Omega cm. The average transmittance of the films was higher than 90% in the wavelength region lambda = 400-800 nm, a range suitable for transparent conducting film applications. (C) 2004 American Institute of Physics.
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页码:1374 / 1376
页数:3
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