Role of structural disorder in optical absorption in silicon

2010 ◽  
Vol 82 (11) ◽  
Author(s):  
Robert J. Bondi ◽  
Sangheon Lee ◽  
Gyeong S. Hwang
Keyword(s):  
Optical Absorption ◽  
Structural Disorder

scholarly journals The Influence of Vanadium Ions in Spectral Properties of ZnO–Sb2O3–B2O3 glasses

2020 ◽  
Vol 06 (09) ◽  
pp. 201-207
Author(s):  
N. Narasimha Rao, P. Raghava Rao, B. J.R.S.N. Swamy A. Chitti Babu, T.Sambasiva rao and N.Ch.Ramesh Babu
Keyword(s):  
Optical Absorption ◽  
Glass Network ◽  
Structural Disorder ◽  
Spectroscopic Studies ◽  
Esr Spectra ◽  
Ion Concentration ◽  
Absorption Bands ◽  
Valence States ◽  
Vanadium Ions

Spectroscopic investigations of V2O5 doped ZnO–Sb2O3–B2O3glass system was prepared by melt-quenching technique. ZnO–Sb2O3–B2O3 glasses containing varying concentrations of V2O5 ranging from 0.1 to 1.0 mol% were prepared, here spectroscopic studies such as Optical absorption, IR and ESR spectra have been carried out as a function of vanadium ion concentration. The optical absorption spectrum of glasses has exhibited two broad absorption bands corresponding to 2B2→2B1 and 2B2→2E transitions of VO2+ ions. The appearances of vibration bands in IR spectra are characteristic for B-O-B and V-O-V linkages, showing the network former role of V2O5. Vanadium ions are believed to be present in two possible valence states, namely V4+and V5+. Here with increasing presence of V2 O5 in the glass network, vanadium ions mostly exist in V4+state and occupy modifying positions. Such increase obviously suggests most structural disorder in the network as the concentration of V2 O5 is increased.

Role of native and impurity defects in optical absorption and luminescence of Li2MoO4 scintillation crystals

2021 ◽  
Vol 867 ◽  
pp. 159148
Author(s):  
Yu. Hizhnyi ◽  
V. Borysyuk ◽  
V. Chornii ◽  
S. Nedilko ◽  
P.O. Tesel’ko ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Scintillation Crystals ◽  
Impurity Defects

Hysteresis in magnetic materials: the role of structural disorder, thermal relaxation, and dynamic effects

2001 ◽  
Vol 226-230 ◽  
pp. 1206-1212 ◽  
Author(s):  
G Bertotti ◽  
V Basso ◽  
C Beatrice ◽  
M LoBue ◽  
A Magni ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Thermal Relaxation ◽  
Structural Disorder ◽  
Dynamic Effects

scholarly journals Photocatalytic H2 generation over In2TiO5, Ni substituted In2TiO5 and NiTiO3 – a combined theoretical and experimental study

RSC Advances ◽  
2015 ◽  
Vol 5 (75) ◽  
pp. 61218-61229 ◽  
Author(s):  
A. M. Banerjee ◽  
M. R. Pai ◽  
A. Arya ◽  
S. R. Bharadwaj
Keyword(s):  
Crystal Structure ◽  
Experimental Study ◽  
Optical Absorption ◽  
Electronic Properties ◽  
Absorption Properties ◽  
H2 Generation ◽  
Ni Substitution ◽  
Consequent Effect ◽  
Photocatalytic H2 Generation

Role of Ni substitution in modifying the crystal structure, optical absorption properties and electronic properties of indium titanate, In2(1−x)Ni2xTiO5−δ (0.0 ≤ 2x ≤ 0.4) and its consequent effect on the photocatalytic properties for H2 generation.

scholarly journals Optical absorption in highly strained Ge/SiGe quantum wells: The role of Γ→Δ scattering

2012 ◽  
Vol 112 (12) ◽  
pp. 123105 ◽  
Author(s):  
L. Lever ◽  
Z. Ikonić ◽  
A. Valavanis ◽  
R. W. Kelsall ◽  
M. Myronov ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Quantum Wells ◽  
Highly Strained ◽  
Sige Quantum Wells
Sign in / Sign up

Export Citation Format

Share Document