Characterizing nanometer-sized V-defects in InGaN single quantum well films by high-spatial-resolution cathodoluminescence spectroscopy

2009 ◽  
Vol 94 (13) ◽  
pp. 131908 ◽  
Author(s):  
M. Yoshikawa ◽  
M. Murakami ◽  
H. Ishida ◽  
H. Harima
Keyword(s):  
Quantum Well ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Cathodoluminescence Spectroscopy

Characterization of V-Defects in InGaN Single-Quantum-Well Films at Nanometer Level by High Spatial Resolution Cathodoluminescence Spectroscopy

2008 ◽  
Vol 600-603 ◽  
pp. 1305-1308
Author(s):  
Masanobu Yoshikawa ◽  
Masataka Murakami ◽  
Takaya Fujita ◽  
K. Inoue ◽  
K. Matsuda ◽  
...  
Keyword(s):  
Quantum Well ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
Spectral Variation ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Cathodoluminescence Spectroscopy

We have measured cathodoluminescence (CL) spectra in the vicinity of V-defects in InGaN single-quantum-well(SQW) films at nanometer level, using newly developed CL apparatus (SE-SEM-CL). From spectroscopic CL measurement, it has been found that the spectra change dramatically in the vicinity of V-defects in the region of £50nm. The SE-SEM-CL has a potential to detect the CL spectral variation at spatial resolution with £50nm.

Characterization of V-defects in InGaN Single Quantum Well Films at the Nanometer Level by High-Spatial-Resolution Cathodoluminescence Spectroscopy

2008 ◽  
Vol 62 (1) ◽  
pp. 86-90 ◽  
Author(s):  
M. Yoshikawa ◽  
M. Murakami ◽  
H. Ishida ◽  
H. Harima
Keyword(s):  
Quantum Well ◽  
Quantum Wells ◽  
Spatial Resolution ◽  
Single Quantum ◽  
Peak Wavelength ◽  
Single Quantum Well ◽  
Cathodoluminescence Spectroscopy ◽  
Working Distance ◽  
Acceleration Voltage

We have developed a new scanning electron microscope (SEM) equipped with a Schottky emission (SE) gun that produces a high probe current at an acceleration voltage of less than 5 kV and a cathodoluminescence (CL) spectroscopic system (SE-SEM-CL) equipped with an SE gun and a newly designed parabolic mirror that has a very short working distance of 9 mm in order to enhance the spatial resolution of CL spectroscopy. We have studied CL spectral variations in the vicinity of V-defects in InGaN single quantum well (SQW) film by measuring its CL spectra at the nanometer level, using our SE-SEM-CL system. It has been found that the peak intensity and peak wavelength of the CL peak around 454 nm assigned to the quantum wells emission of the InGaN SQW layer significantly change in the vicinity of the V-defects. We have considered that the change in the peak wavelength is mainly caused by a change in the In content in the InGaN SQW layer. Our SE-SEM-CL has a spatial resolution of less than 40 nm for the InGaN SQW layer.

Spectral and spatial resolution of photopumped II–VI single quantum well lasers

1995 ◽  
Vol 66 (12) ◽  
pp. 1455-1457 ◽  
Author(s):  
D. M. Bagnall ◽  
A. Ralston ◽  
K. P. O’Donnell ◽  
P. C. Smith ◽  
P. Wright ◽  
...  
Keyword(s):  
Quantum Well ◽  
Spatial Resolution ◽  
Quantum Well Lasers ◽  
Single Quantum ◽  
Single Quantum Well

(InAs)1/(GaAs)2short period superlattice strained single quantum well laser on GaAs substrate

1993 ◽  
Vol 29 (1) ◽  
pp. 98-99 ◽  
Author(s):  
H. Kurakake ◽  
T. Uchida ◽  
H. Soda ◽  
S. Yamazaki
Keyword(s):  
Quantum Well ◽  
Gaas Substrate ◽  
Single Quantum ◽  
Single Quantum Well ◽  
Quantum Well Laser

Thermal quenching of extrinsic photoluminescence of GaAs-Ga1-x Al x As single quantum well

1988 ◽  
Vol 10 (10) ◽  
pp. 1243-1248 ◽  
Author(s):  
Y. Chen ◽  
A. Hameury ◽  
J. Massies ◽  
C. Neri
Keyword(s):  
Quantum Well ◽  
Thermal Quenching ◽  
Single Quantum ◽  
Single Quantum Well

Single quantum well diodes from GaInAsBi emitting at wavelengths up to 2.5 μm

2020 ◽  
Vol 111 ◽  
pp. 103567
Author(s):  
V. Pačebutas ◽  
B. Čechavičius ◽  
A. Krotkus
Keyword(s):  
Quantum Well ◽  
Single Quantum ◽  
Single Quantum Well
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