Surface morphology and optical characterization of GaN grown on α-Al2O3 (0001) by radio-frequency-assisted molecular beam epitaxy

1997 ◽  
Vol 70 (22) ◽  
pp. 3023-3025 ◽  
Author(s):  
M. Yeadon ◽  
F. Hamdani ◽  
G. Y. Xu ◽  
A. Salvador ◽  
A. E. Botchkarev ◽  
...  
2003 ◽  
Vol 93 (9) ◽  
pp. 5274-5281 ◽  
Author(s):  
Muhammad B. Haider ◽  
Costel Constantin ◽  
Hamad Al-Brithen ◽  
Haiqiang Yang ◽  
Eugen Trifan ◽  
...  

1993 ◽  
Vol 300 ◽  
Author(s):  
Tsutomu Iida ◽  
Yunosuke Makita ◽  
Shinji Kimura ◽  
Stefan Winter ◽  
Akimasa Yamada ◽  
...  

ABSTRACTLow energy (100 eV) impinging of carbon (C+) ions was made during molecular beam epitaxy (MBE) of GaAs using combined ion beam and molecular beam epitaxy (CIBMBE) technologies for the growth temperature ( Tg ) between 500 °C and 590 °C. 2 K photoluminescence (PL), Raman scattering and Hall effect measurements were made for the samples. In the PL spectra two specific emissions, “g” and [g-g], were observed which are closely associated with acceptor impurities. PL and Hall effect measurements indicate that C atoms were very efficiently introduced during MBE growth by CIBMBE and were both optically and electrically well activated as acceptors even at Tg=500 °C. The results reveal that defect-free impurity doping without subsequent annealing can be achieved by CIBMBE method.


2006 ◽  
Vol 301 ◽  
pp. 95-98 ◽  
Author(s):  
Masashi Yamashita ◽  
Yukari Ishikawa ◽  
Hitoshi Ohsato ◽  
Noriyoshi Shibata

An AlBN thin film with a boron content (B/(Al+B)) of 0.1 or 0.3 was obtained by radio-frequency plasma-assisted molecular beam epitaxy (RF-MBE) using EB-guns as group-III element sources and an RF radical source for nitrogen supply. We compared the characteristics of the film with those of AlN and BN films. By reflective high-energy electron diffraction (RHEED), we observed ring patterns in the AlBN film. The X-ray photoelectron spectroscopy (XPS) N1s peak of the AlBN film was observed at a binding energy between the peaks of AlN and BN. There was no evidence for phase separation in the film.


1993 ◽  
Vol 127 (1-4) ◽  
pp. 623-626 ◽  
Author(s):  
A. Mazuelas ◽  
J. Meléndez ◽  
P.S. Domínguez ◽  
M. Garriga ◽  
C. Ballesteros ◽  
...  

1991 ◽  
Vol 01 (C7) ◽  
pp. C7-297-C7-301
Author(s):  
L. E. BAUSA ◽  
R. LEGROS ◽  
A. MUNOZ-YAGUE

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