annealing;
binding energy;
energy gap;
flicker noise;
insulated gate field effect transistors;
magnesium;
semiconductor doping;
sputter deposition;
thin film transistors;
X-ray photoelectron spectra;
zinc compounds;
D O I:
10.1149/1.3606545
中图分类号:
O646 [电化学、电解、磁化学];
学科分类号:
081704 ;
摘要:
In this work, depletion-mode magnesium doped zinc-oxide (MgZnO) channel thin film transistors (TFTs) with zirconium oxide (ZrO2) gate insulator were fabricated using radio frequency magnetron sputtering deposition. Sputtered MgZnO TFT channel layer performed an average transmittance of 90% and an improved energy bandgap of 5.02 eV after 700 degrees C post annealing. X-ray photoelectron spectroscopy (XPS) results indicated that the binding energy of Zn-O bonds and Mg-O bonds were enhanced following with the increasing of the post annealing temperatures. The low frequency noise spectra also indicated that the ZrO2/MgZnO was dominated by flicker noise and gate leakage induced noise was suppressed. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3606545] All rights reserved.
机构:
Brown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USABrown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA
Song, Yang
Zaslavsky, A.
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机构:
Brown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA
Brown Univ, Sch Engn, 184 Hope St, Providence, RI 02912 USABrown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA
Zaslavsky, A.
Paine, D. C.
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机构:
Brown Univ, Sch Engn, 184 Hope St, Providence, RI 02912 USABrown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA
机构:
Xinjiang Univ, Sch Phys & Technol, Urumqi 830046, Peoples R ChinaXinjiang Univ, Sch Phys & Technol, Urumqi 830046, Peoples R China
Mamat, Mamatrishat
Chen, Henglei
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机构:
Xinjiang Univ, Sch Phys & Technol, Urumqi 830046, Peoples R ChinaXinjiang Univ, Sch Phys & Technol, Urumqi 830046, Peoples R China
Chen, Henglei
Xu, Lei
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机构:
North China Univ Water Resources & Elect Power, Sch Phys & Elect, Zhengzhou 450046, Peoples R ChinaXinjiang Univ, Sch Phys & Technol, Urumqi 830046, Peoples R China