scholarly journals Metal-organic vapor phase epitaxial growth of high-quality ZnO films on Al2O3(00·1)

2001 ◽  
Vol 16 (5) ◽  
pp. 1358-1362 ◽  
Author(s):  
W. I. Park ◽  
S-J. An ◽  
Gyu-Chul Yi ◽  
Hyun M. Jang

High-quality ZnO thin films were grown epitaxially at 250–550 °C Al2O3(00·1) substrates using low-pressure metalorganic vapor phase epitaxy. The reactants for the growth were diethylzinc and oxygen. Growth temperature, one of the important experimental parameters for epitaxial layers, was optimized. The films grown at 500 °C exhibited good crystallinity and strong ultraviolet absorption and emission. Photoluminescence spectra of the films showed a dominant excitonic emission with a weak deep level emission. More importantly, a strong stimulated emission peak was observed even at room temperature.

2004 ◽  
Vol 267 (1-2) ◽  
pp. 140-144 ◽  
Author(s):  
A. Dadgar ◽  
N. Oleynik ◽  
D. Forster ◽  
S. Deiter ◽  
H. Witek ◽  
...  

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Galia Pozina ◽  
Azat R. Gubaydullin ◽  
Maxim I. Mitrofanov ◽  
Mikhail A. Kaliteevski ◽  
Iaroslav V. Levitskii ◽  
...  

Small ◽  
2008 ◽  
Vol 4 (7) ◽  
pp. 878-882 ◽  
Author(s):  
Philippe Caroff ◽  
Jakob B. Wagner ◽  
Kimberly A. Dick ◽  
Henrik A. Nilsson ◽  
Mattias Jeppsson ◽  
...  

2008 ◽  
Vol 92 (19) ◽  
pp. 192111 ◽  
Author(s):  
Kai Cheng ◽  
M. Leys ◽  
S. Degroote ◽  
M. Germain ◽  
G. Borghs

2000 ◽  
Vol 639 ◽  
Author(s):  
J. M. Gregie ◽  
R. Y. Korotkov ◽  
B. W. Wessels

ABSTRACTDeep level defects in oxygen doped GaN grown by metal-organic vapor phase epitaxy were investigated. Using steady-state photocapacitance (SSPC) spectroscopy, three deep levels with optical ionization energies of 1.0, 1.4, and 3.25 eV were observed in both nominally undoped and oxygen-doped samples. The total deep level defect concentrations ranged from 6 × 1015 cm-3 in undoped films to 3 × 1016 cm-3 in oxygen-doped films. The concentration of the 3.25 eV level defect increased upon oxygen doping, while the concentrationof the 1.0 and 1.4 eV levels were essentially dopant independent. From the measured concentrations the formation energies of the defects were calculated and compared to energies calculated using density functional theory.


2007 ◽  
Vol 4 (7) ◽  
pp. 2502-2505 ◽  
Author(s):  
M. Imura ◽  
N. Kato ◽  
N. Okada ◽  
K. Balakrishnan ◽  
M. Iwaya ◽  
...  

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