Enhancement of free‐carrier concentration inn‐type AlxGa1−xAs grown by metalorganic vapor phase epitaxy in the temperature range 850–950 °C

1989 ◽  
Vol 54 (12) ◽  
pp. 1121-1123 ◽  
Author(s):  
P. Basmaji ◽  
A. Zaouk ◽  
P. Gibart ◽  
D. Gauthier ◽  
J. C. Portal
1996 ◽  
Vol 442 ◽  
Author(s):  
A. Wankerl ◽  
D. T. Emerson ◽  
M. J. Cook ◽  
J. R. Shealy

AbstractWe report on the low temperature growth of AlxGa1−xAs by conventional Organometallic Vapor Phase Epitaxy OMVPE for a substrate temperature of 500°C and V/III ratios extending to subunity. Optical, structural and electrical qualities are assessed with double crystal X-ray diffraction, Nomarski and atomic force microscopy, 1.6K and 300K photoluminescence, Rutherford backscattering and Hall measurements. Although our low temperature grown films are of good structural and optical quality, they exhibit high background p-doping (carbon) and high levels of hydrogen passivation. A method for extracting the carbon doping levels from lattice contraction measurements is suggested. The dependence of layer composition, free carrier concentration and hydrogen passivation on growth parameters are investigated. Moreover, the effects of post-growth annealing on free carrier concentration, lattice parameter and optical qualities are studied. The influence on the bandgap of bandtail states and compressive strain due to carbon are compared.


1993 ◽  
Vol 32 (Part 2, No. 4A) ◽  
pp. L524-L527 ◽  
Author(s):  
Masahiro Fujimoto ◽  
Ikuo Suemune ◽  
Hirofumi Osaka ◽  
Yoshihisa Fujii

2011 ◽  
Vol 315 (1) ◽  
pp. 64-67 ◽  
Author(s):  
Tomonari Sato ◽  
Manabu Mitsuhara ◽  
Ryuzo Iga ◽  
Shigeru Kanazawa ◽  
Yasuyuki Inoue

1998 ◽  
Vol 512 ◽  
Author(s):  
J. Chaudhuri ◽  
M. Hooe Ng ◽  
D. D. Koleske ◽  
A. E. Wickenden ◽  
R. L. Henry

ABSTRACTHigh resolution x-ray diffraction and x-ray topography study of GaN thin films, grown on sapphire (00.1) substrate by reduced pressure metalorganic vapor phase epitaxy under various conditions, were performed. An attempt was made to correlate the mobility in films with similar carrier concentration with the strain and dislocation density. X-ray topography revealed the defects present in the film.


1997 ◽  
Vol 71 (23) ◽  
pp. 3376-3378 ◽  
Author(s):  
G. Y. Zhang ◽  
Y. Z. Tong ◽  
Z. J. Yang ◽  
S. X. Jin ◽  
J. Li ◽  
...  

Author(s):  
Р.В. Левин ◽  
А.С. Власов ◽  
Б.В. Пушный

Charachterization of Si-doped GaSb epitaxial layers grown by metal organic vapor phase epitaxy is presented. Samples are grown at constant SiH4 flow with a TMSb/TEGa ratio ranged from 1 to 50. X-ray diffraction, Raman scattering, photoluminescence, resistivity, free carrier concentration and their mobility are studied.


1991 ◽  
Vol 107 (1-4) ◽  
pp. 268-273 ◽  
Author(s):  
M.A. Tischler ◽  
R.M. Potemski ◽  
T.F. Kuech ◽  
F. Cardone ◽  
M.S. Goorsky ◽  
...  

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