Photoluminescence study of hexagonal GaN heteroepitaxial layers grown by molecular beam epitaxy on Al/sub 2/O/sub 3/, Si and GaAs substrates

2002 ◽  
Author(s):  
E.-M. Pavelescu ◽  
M. Androulidaki ◽  
M. Cengher ◽  
A. Georgakilas ◽  
V. Cimpoca
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Photoluminescence Study ◽  
Gaas Substrates ◽  
Heteroepitaxial Layers

Photoluminescence study of Si doping cubic GaN grown on (001) GaAs substrates by Molecular Beam Epitaxy

2001 ◽  
Vol 227-228 ◽  
pp. 420-424 ◽  
Author(s):  
Z.Q Li ◽  
H Chen ◽  
H.F Liu ◽  
L Wan ◽  
Q Huang ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Photoluminescence Study ◽  
Si Doping ◽  
Gaas Substrates ◽  
Cubic Gan

Defects in HgCdTe grown by molecular beam epitaxy on GaAs substrates

2012 ◽  
Vol 20 (4) ◽  
Author(s):  
I. Izhnin ◽  
A. Izhnin ◽  
H. Savytskyy ◽  
O. Fitsych ◽  
N. Mikhailov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Buffer Layers ◽  
Structural Defects ◽  
Donor Concentration ◽  
Ion Milling ◽  
Electrical And Optical Properties ◽  
Gaas Substrates ◽  
Cdte Buffer

AbstractThe Hall effect and photoluminescence measurements combined with annealing and/or ion milling were used to study the electrical and optical properties of HgCdTe films grown by molecular-beam epitaxy on GaAs substrates with ZnTe and CdTe buffer layers. Unintentional donor doping, likely from the substrate, which resulted in residual donor concentration of the order of 1015 cm−3, was observed in the films. Also, acceptor states, possibly related to structural defects, were observed.

Activation of two dopants, Bi and Er in δ-doped layer in Si crystal

Nano Futures ◽  
2021 ◽  
Vol 5 (4) ◽  
pp. 045005
Author(s):  
Koichi Murata ◽  
Shuhei Yagi ◽  
Takashi Kanazawa ◽  
Satoshi Tsubomatsu ◽  
Christopher Kirkham ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Growth Temperature ◽  
Molecular Beam ◽  
Silicon Crystal ◽  
Electric Transport ◽  
Photoluminescence Study ◽  
Post Annealing ◽  
Surface Nanostructures ◽  
Doping Technique ◽  
Dopant Source

Abstract Conventional doping processes are no longer viable for realizing extreme structures, such as a δ-doped layer with multiple elements, such as the heavy Bi, within the silicon crystal. Here, we demonstrate the formation of (Bi + Er)-δ-doped layer based on surface nanostructures, i.e. Bi nanolines, as the dopant source by molecular beam epitaxy. The concentration of both Er and Bi dopants is controlled by adjusting the amount of deposited Er atoms, the growth temperature during Si capping and surfactant techniques. Subsequent post-annealing processing is essential in this doping technique to obtain activated dopants in the δ-doped layer. Electric transport measurement and photoluminescence study revealed that both Bi and Er dopants were activated after post-annealing at moderate temperature.

Structural characterization of molecular beam epitaxy grown ZnSe-based layers on GaAs substrates for blue–green laser diodes

2000 ◽  
Vol 360 (1-2) ◽  
pp. 195-204 ◽  
Author(s):  
G. Kiriakidis ◽  
K. Moschovis ◽  
P. Uusimaa ◽  
A. Salokatve ◽  
M. Pessa ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Structural Characterization ◽  
Molecular Beam ◽  
Laser Diodes ◽  
Green Laser ◽  
Gaas Substrates

Molecular Beam Epitaxy of GaSb on GaAs Substrates with Compositionally Graded LT-GaAs x Sb 1- x Buffer Layers

2017 ◽  
Vol 34 (1) ◽  
pp. 018101
Author(s):  
Hai-Long Yu ◽  
Hao-Yue Wu ◽  
Hai-Jun Zhu ◽  
Guo-Feng Song ◽  
Yun Xu
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Buffer Layers ◽  
Gaas Substrates ◽  
Lt Gaas

High Gain and High Sensitive Blue-Ultraviolet Avalanche Photodiodes (APDs) of ZnSSe n+-i-p Structure Molecular Beam Epitaxy (MBE) Grown on p-type GaAs Substrates

2005 ◽  
Vol 44 (No. 17) ◽  
pp. L508-L510 ◽  
Author(s):  
Tomoki Abe ◽  
Koshi Ando ◽  
Katsushi Ikumi ◽  
Hiroyasu Maeta ◽  
Junji Naruse ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Avalanche Photodiodes ◽  
High Gain ◽  
Gaas Substrates ◽  
P Type

Raman characterization of molecular‐beam‐epitaxy‐grown GaAlSb on GaSb and GaAs substrates

1989 ◽  
Vol 65 (5) ◽  
pp. 1942-1946 ◽  
Author(s):  
Miles Haines ◽  
T. Kerr ◽  
S. Newstead ◽  
P. B. Kirby
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Gaas Substrates ◽  
Raman Characterization

Germanium Incorporation in Silicon Carbide Epitaxial Layers Using Molecular Beam Epitaxy on 4H-SiC Substrates

2019 ◽  
Vol 963 ◽  
pp. 127-130
Author(s):  
Jörg Pezoldt ◽  
Charbel Zgheib ◽  
Thomas Stauden ◽  
Gernot Ecke ◽  
Thomas Kups ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Atomic Layer ◽  
Solubility Limit ◽  
Solid Solubility Limit ◽  
Transmission Electron ◽  
Section Electron ◽  
Heteroepitaxial Layers ◽  
Section Electron Microscopy

Ternary (Si1-xCy)Gex+y solid solutions were grown on Si-face 4H-SiC applying atomic layer molecular beam epitaxy at low temperatures. The grown layers consist of twinned 3C-SiC revealed by cross section electron microscopy. The germanium was incorporated on silicon lattice sites as revealed by atomic location by channeling enhanced microanalysis transmission electron microscopy studies. The Ge concentration of the grown 3C-(Si1-xCy)Gex+y heteroepitaxial layers decreases with increasing growth temperatures, but exceeds the solid solubility limit.

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