Band-gap engineering of III-V semiconductors by MBE using electron beam evaporation of Group III metals

1990 ◽  
Author(s):  
Roger J. Malik ◽  
Leda M. Lunardi ◽  
Barry F. Levine ◽  
Clyde G. Bethea ◽  
Fabio Beltram ◽  
...  
Keyword(s):  
Electron Beam ◽  
Band Gap ◽  
Electron Beam Evaporation ◽  
Band Gap Engineering ◽  
Group Iii

Electron Beam Source Molecular Beam Epitaxy of AlxGa1−Xas Graded Band Gap Device Structures

1987 ◽  
Vol 102 ◽  
Author(s):  
R. J. Malik ◽  
A. F. J. Levi ◽  
B. F. Levine ◽  
R. C. Miller ◽  
D. V. Lang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Molecular Beam Epitaxy ◽  
Band Gap ◽  
Molecular Beam ◽  
Electron Beam Evaporation ◽  
Hot Electron ◽  
Group Iii ◽  
Composition Profiles ◽  
Variable Band Gap ◽  
Graded Band Gap

ABSTRACTA new method has been developed for the growth of graded band-gap AlxGal-xAs alloys by molecular beam epitaxy which is based upon electron beam evaporation of the Group III elements. The metal evaporation rates are measured real-time and feedback controlled using beam flux sensors. The system is computer controlled which allows precise programming of the Ga and Al evaporation rates. The large dynamic response of the metal sources enables for the first time the synthesis of variable band-gap AlxGal-.xAs with arbitrary composition profiles. This new technique has been demonstrated in the growth of unipolar hot electron transistors, graded base bipolar transistors, and Mshaped barrier superlattices.

Enhanced red luminescence and improved crystallinity in NaEu(WO4)2 phosphors: an electron beam irradiation study

2018 ◽  
Vol 42 (4) ◽  
pp. 2726-2732 ◽  
Author(s):  
Archana K. Munirathnappa ◽  
Vikash C. Petwal ◽  
Jishnu Dwivedi ◽  
Nalini G. Sundaram
Keyword(s):  
Electron Beam ◽  
Band Gap ◽  
Fluorescence Intensity ◽  
Electron Beam Irradiation ◽  
Beam Irradiation ◽  
Band Gap Engineering ◽  
New Strategy ◽  
Red Luminescence ◽  
Dose Dependent

Band gap engineering in NaEu(WO4)2 red phospors via dose-dependent EB irradiation: a new strategy for improving fluorescence intensity.

OPTICAL PROPERTIES OF AsSeTl THIN FILMS DEPOSITED BY e-BEAM EVAPORATION TECHNIQUE

2011 ◽  
Vol 18 (01n02) ◽  
pp. 71-75 ◽  
Author(s):  
M. M. ABD EL-RAHEEM
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Electron Beam ◽  
Band Gap ◽  
Optical Band Gap ◽  
Plasma Frequency ◽  
Electron Beam Evaporation ◽  
Dispersion Energy ◽  
Electron Beam Evaporation Technique ◽  
Evaporation Technique

Five compositions of the system As 25 Se 75-x Tl x (x = 12, 16, 20, 24 and 28%) have been prepared using melt quench technique. Thin films of the same thickness (200 nm) were deposited by electron beam evaporation technique. Optical and other parameters of the films have been studied. The optical band gap E op found to decrease by increasing the coordination number r and average number of bonds per atom N av and by decreasing the heat of atomization H s . Other parameters as an oscillator energy E o , dispersion energy E d and plasma frequency ω p found to be affected by changing thallium content.

ELECTRON BEAM SOURCE MOLECULAR BEAM EPITAXY OF AlxGa1-xAs GRADED BAND GAP DEVICE STRUCTURES

1988 ◽  
Vol 49 (C4) ◽  
pp. C4-607-C4-614
Author(s):  
R. J. MALIK ◽  
A. F.J. LEVI ◽  
B. F. LEVINE ◽  
R. C. MILLER ◽  
D. V. LANG ◽  
...  
Keyword(s):  
Electron Beam ◽  
Molecular Beam Epitaxy ◽  
Band Gap ◽  
Molecular Beam ◽  
Beam Source ◽  
Device Structures ◽  
Graded Band Gap

Temperature-dependent study of GaAs1−x−y N x Bi y alloys for band-gap engineering: photoreflectance and k · p modeling

2020 ◽  
Vol 13 (9) ◽  
pp. 091005
Author(s):  
Wiktor Żuraw ◽  
Wojciech M. Linhart ◽  
Jordan Occena ◽  
Tim Jen ◽  
Jared. W. Mitchell ◽  
...  
Keyword(s):  
Band Gap ◽  
Temperature Dependent ◽  
Band Gap Engineering ◽  
Temperature Dependent Study

Band Gap Engineering in Spray Pyrolysis Grown Nanocrystalline NiO Thin Films by Fe Doping

2019 ◽  
Vol 11 (4) ◽  
pp. 04015-1-04015-6
Author(s):  
H. S. Gavale ◽  
◽  
M. S. Wagh ◽  
S. R. Gosavi ◽  
◽  
...  
Keyword(s):  
Thin Films ◽  
Band Gap ◽  
Spray Pyrolysis ◽  
Fe Doping ◽  
Band Gap Engineering
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