Polarized light emission from antiphase boundaries acting as slanting quantum wells inGaP∕InPshort-period superlattices

2005 ◽  
Vol 72 (12) ◽  
Author(s):  
Yutaka Ohno
1999 ◽  
Vol 588 ◽  
Author(s):  
Y. Ohno ◽  
S. Takeda

AbstractWe have developed an apparatus for polarized cathodoluminescence (CL) spectroscopy combined with transmission electron microscopy (TEM), that enables us to obtain simultaneously structural data in higher spatial resolution by TEM and polarized luminescence spectra by CL of the same microscopic area. The polarized-CL/TEM method is very useful to study the optical properties of low-dimensional microstructures in semiconducting materials. We have applied the method to examine the optical property of antiphase boundaries in CuPt-ordered GaInP2 and found, for the first time, the polarized light emission from the APBs whose habit planes are parallel to the (T11) and (1T0) atomic planes.


2012 ◽  
Vol 1432 ◽  
Author(s):  
Chiao-Yun Chang ◽  
Huei-Min Huang ◽  
Tien-Chang Lu ◽  
Hao-Chung Kuo ◽  
Shing-Chung Wang ◽  
...  

ABSTRACTWe studied the polarization-dependent photoluminescence (PL) of a-plane GaN /AlGaN multiple quantum wells (MQWs) grown on r-plane sapphire substrate with the various well width from 1.5 to 7.33 nm. To clarify the reasons of light emission polarization properties, we applied the 6×6 k‧p model to simulate the E-k dispersion relation and the wave functions to obtain the polarization optical transitions. According to the experimental result, the PL emission peak position exhibits a red-shifted with increasing well width, due to the reduction of the quantum confinement effect. The polarization ratio of a-plane GaN/AlGaN MQWs increased from 0.236 to 0.274 with increasing the quantum well width. This phenomenon is believed to be that y-polarized light emission gradually dominates the PL spectrum and thus enhances the polarization ratio.


2007 ◽  
Vol 101 (5) ◽  
pp. 053530 ◽  
Author(s):  
M. Feneberg ◽  
F. Lipski ◽  
R. Sauer ◽  
K. Thonke ◽  
P. Brückner ◽  
...  

2012 ◽  
Vol 48 (7) ◽  
pp. 867-871 ◽  
Author(s):  
Chiao-Yun Chang ◽  
Huei-Min Huang ◽  
Chih Ming Lai ◽  
Tien-Chang Lu

2001 ◽  
Vol 79 (10) ◽  
pp. 1483-1485 ◽  
Author(s):  
S. P. Łepkowski ◽  
H. Teisseyre ◽  
T. Suski ◽  
P. Perlin ◽  
N. Grandjean ◽  
...  

2013 ◽  
Vol 10 (5) ◽  
pp. 727-731 ◽  
Author(s):  
K. Tanaka ◽  
N. Happo ◽  
M. Fujiwara ◽  
N. Kotera

2014 ◽  
Vol 22 (7) ◽  
pp. 7388 ◽  
Author(s):  
Ming-Yi Lin ◽  
Tsung-Han Tsai ◽  
Yu Ling Kang ◽  
Yu-Cheng Chen ◽  
Yi-Hsiang Huang ◽  
...  

2005 ◽  
Vol 87 (13) ◽  
pp. 131911 ◽  
Author(s):  
S. Srinivasan ◽  
M. Stevens ◽  
F. A. Ponce ◽  
T. Mukai

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