Fundamental band edge absorption in nominally undoped and doped 4H‐SiC

2007 ◽  
Vol 101 (12) ◽  
pp. 123521 ◽  
Author(s):  
P. Grivickas ◽  
V. Grivickas ◽  
J. Linnros ◽  
A. Galeckas
Keyword(s):  
Band Edge ◽  
Fundamental Band ◽  
Edge Absorption

The Effects of Composition on the Spectral Loss Characteristics of SiGe Planar Waveguide Structures

1992 ◽  
Vol 281 ◽  
Author(s):  
Yang Zuoya ◽  
B. L. Weiss ◽  
G. Shao ◽  
F. Namavar
Keyword(s):  
Optical Properties ◽  
Planar Waveguide ◽  
Waveguide Structure ◽  
Propagation Loss ◽  
Band Edge ◽  
Optical Confinement ◽  
Structural And Optical Properties ◽  
Edge Absorption

ABSTRACTThe effect of the Si:Ge ratio in SiGe/Si heterostructures on the structural and optical properties of SiGe/Si planar waveguide are reported here for Ge concentrations from 1 to 33.6%. The high propagation loss at 1.15 pm is due to band edge absorption, which increases as the Ge concentration increases, while the loss at longer wavelengths (1.523 pm) increases with decreasing Si concentration, due to the reduced optical confinement of the waveguide structure.

Optical absorption spectra near the fundamental band edge in Cu2In4Se7 bulk crystals

2003 ◽  
Vol 93 (11) ◽  
pp. 8939-8944 ◽  
Author(s):  
C. Rincón ◽  
S. M. Wasim ◽  
G. Marı́n ◽  
G. Sánchez Pérez
Keyword(s):  
Optical Absorption ◽  
Absorption Spectra ◽  
Band Edge ◽  
Optical Absorption Spectra ◽  
Bulk Crystals ◽  
Fundamental Band

Band‐edge absorption coefficients from photoluminescence in semiconductor multiple quantum wells

1989 ◽  
Vol 54 (14) ◽  
pp. 1356-1358 ◽  
Author(s):  
Alan Kost ◽  
H. C. Lee ◽  
Yao Zou ◽  
P. D. Dapkus ◽  
Elsa Garmire
Keyword(s):  
Quantum Wells ◽  
Band Edge ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
Absorption Coefficients ◽  
Edge Absorption

Vanadium related near‐band‐edge absorption bands in three SiC polytypes

1995 ◽  
Vol 78 (5) ◽  
pp. 3160-3163 ◽  
Author(s):  
J. R. Jenny ◽  
M. Skowronski ◽  
W. C. Mitchel ◽  
H. M. Hobgood ◽  
R. C. Glass ◽  
...  
Keyword(s):  
Band Edge ◽  
Near Band Edge ◽  
Absorption Bands ◽  
Edge Absorption

scholarly journals Electronic structure and anomalous band-edge absorption feature in multiferroicMnWO4: An optical spectroscopic study

2010 ◽  
Vol 81 (20) ◽  
Author(s):  
Woo Seok Choi ◽  
K. Taniguchi ◽  
S. J. Moon ◽  
S. S. A. Seo ◽  
T. Arima ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Spectroscopic Study ◽  
Band Edge ◽  
Absorption Feature ◽  
Edge Absorption

scholarly journals Extending the near-infrared band-edge absorption spectrum of silicon by proximity to a 2D semiconductor

2021 ◽  
Vol 538 ◽  
pp. 147803
Author(s):  
Valerio Apicella ◽  
Teslim Ayinde Fasasi ◽  
Hon Fai Wong ◽  
Dennis C.W. Leung ◽  
Antonio Ruotolo
Keyword(s):  
Absorption Spectrum ◽  
Near Infrared ◽  
Band Edge ◽  
Infrared Band ◽  
Edge Absorption
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