Theory of long-wavelength optical lattice vibrations in multinary mixed crystals: Application to group-III nitride alloys

2002 ◽  
Vol 66 (7) ◽  
Author(s):  
Ruisheng Zheng ◽  
Tsunemasa Taguchi ◽  
Mitsuru Matsuura
Keyword(s):  
Optical Lattice ◽  
Mixed Crystals ◽  
Lattice Vibrations ◽  
Group Iii ◽  
Long Wavelength ◽  
Nitride Alloys ◽  
Group Iii Nitride

Group III-nitride alloys as photovoltaic materials

2004 ◽  
Author(s):  
Joel W. Ager III ◽  
Junqiao Wu ◽  
Kin M. Yu ◽  
R. E. Jones ◽  
S. X. Li ◽  
...  
Keyword(s):  
Group Iii ◽  
Photovoltaic Materials ◽  
Nitride Alloys ◽  
Group Iii Nitride

Pressure Dependence of Optical Transitions in In-rich Group III-Nitride Alloys

2003 ◽  
Vol 798 ◽  
Author(s):  
S. X. Li ◽  
J. Wu ◽  
W. Walukiewicz ◽  
W. Shan ◽  
E. E. Haller ◽  
...  
Keyword(s):  
Pressure Dependence ◽  
Pressure Coefficient ◽  
Accurate Method ◽  
Group Iii Nitrides ◽  
Localized States ◽  
Optical Transitions ◽  
Group Iii ◽  
Pressure Coefficients ◽  
Nitride Alloys ◽  
Group Iii Nitride

ABSTRACTThe hydrostatic pressure dependence of the optical transitions in InN, In-rich In1-xGaxN (0 < x < 0.5) and In1-xAlxN (x = 0.25) alloys is studied using diamond anvil cells. The absorption edges and the photoluminescence peaks shift to higher energy with pressure. The pressure coefficient of InN is determined to be 3.0±0.1 meV/kbar. Together with previous experimental results, our data suggest that the pressure coefficients of group-III nitride alloys have only a weak dependence on the alloy composition. Photoluminescence gives much smaller pressure coefficients, which is attributed to emission involving highly localized states. This indicates that photoluminescence might not be an accurate method to study the pressure dependence of the fundamental bandgaps of group III-nitrides.

Long-Wavelength Optical Lattice Vibrations inBaySr1−yF2andSryCa1−yF2

1967 ◽  
Vol 164 (3) ◽  
pp. 1169-1184 ◽  
Author(s):  
H. W. Verleur ◽  
A. S. Barker
Keyword(s):  
Optical Lattice ◽  
Lattice Vibrations ◽  
Long Wavelength

Polaron Properties in Ternary Group-III Nitride Mixed Crystals

2006 ◽  
Author(s):  
Z. W. Yan ◽  
S. L. Ban ◽  
X. X. Liang
Keyword(s):  
Mixed Crystals ◽  
Group Iii ◽  
Group Iii Nitride

scholarly journals Phase separation and ordering in group-III nitride alloys

2004 ◽  
Vol 34 (2b) ◽  
pp. 593-597 ◽  
Author(s):  
L. K. Teles ◽  
M. Marques ◽  
L. M. R. Scolfaro ◽  
J. R. Leite ◽  
L. G. Ferreira
Keyword(s):  
Phase Separation ◽  
Group Iii ◽  
Nitride Alloys ◽  
Group Iii Nitride
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