Metallic conductivity and metal-semiconductor transition in Ga-doped ZnO

被引：255

作者：

Bhosle, V ^{[1
]}

Tiwari, A ^{[1
]}

Narayan, J ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.2165281

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This letter reports the metallic conductivity in Ga:ZnO system at room temperature and a metal-semiconductor transition (MST) behavior at low temperatures. Zn0.95Ga0.05O films, deposited by pulsed laser deposition in the pressure range of similar to 10(-2) Torr of oxygen, were found to be crystalline and exhibited degeneracy at room temperature with the electrical resistivity close to 1.4 x 10(-4) Omega cm and transmittance > 80% in the visible region. Temperature dependent resistivity measurements of these highly conducting and transparent films also showed, for the first time, a MST at similar to 170 K. Mechanisms responsible for these observations are discussed in the terms of dopant addition and its effect on ionization efficiency of oxygen vacancies.

引用

页码：1 / 3

页数：3

共 21 条

[1] SEMICONDUCTOR-TO-METAL TRANSITION IN N-TYPE GROUP 4 SEMICONDUCTORS
ALEXANDER, MN
HOLCOMB, DF
[J]. REVIEWS OF MODERN PHYSICS, 1968, 40 (04) : 815 - +
[2] Magnetotransport in epitaxial films of the degenerate semiconductor Zn1-xCoxO
Budhani, C
Pant, P
Rakshit, RK
Senapati, K
Mandal, S
Pandey, K
Kumar, J
[J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2005, 17 (01) : 75 - 86
[3] ANOMALOUS OPTICAL ABSORPTION LIMIT IN INSB
BURSTEIN, E
[J]. PHYSICAL REVIEW, 1954, 93 (03): : 632 - 633
[4] OPTICAL AND ELECTRICAL-PROPERTIES OF GA2O3-DOPED ZNO FILMS PREPARED BY R.F. SPUTTERING
CHOI, BH
IM, HB
SONG, JS
YOON, KH
[J]. THIN SOLID FILMS, 1990, 193 (1-2) : 712 - 720
[5] Chrisey D. B., 1994, PULSED LASER DEPOSIT
[6] Fairley N., 2005, CASA COOKBOOK 1
[7] A transparent metal:: Nb-doped anatase TiO2 -: art. no. 252101
Furubayashi, Y
Hitosugi, T
Yamamoto, Y
Inaba, K
Kinoda, G
Hirose, Y
Shimada, T
Hasegawa, T
[J]. APPLIED PHYSICS LETTERS, 2005, 86 (25) : 1 - 3
[8] Transparent conducting oxides
Ginley, DS
Bright, C
[J]. MRS BULLETIN, 2000, 25 (08) : 15 - 18
[9] Gordon R.G., 2000, MRS Bull, V52, P15
[10] Effect of Al and Mn doping on the electrical conductivity of ZnO
Han, JP
Mantas, PQ
Senos, AMR
[J]. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2001, 21 (10-11) : 1883 - 1886

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