Morphology and optical properties of self-assembled In0.5Ga0.5As quantum dots with different spacer layer thickness

2010 ◽  
Vol 15 (5) ◽  
pp. 534-539 ◽  
Author(s):  
Didik Aryanto ◽  
Abd. Khamim Lsrnail ◽  
Zulkafli Othaman
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Layer Thickness ◽  
Spacer Layer Thickness ◽  
Spacer Layer ◽  
Self Assembled

Effect of spacer layer thickness on structural and optical properties of multi-stack InAs/GaAsSb quantum dots

2015 ◽  
Vol 107 (17) ◽  
pp. 173109 ◽  
Author(s):  
Yeongho Kim ◽  
Keun-Yong Ban ◽  
Allison Boley ◽  
David J. Smith ◽  
Christiana B. Honsberg
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Layer Thickness ◽  
Structural And Optical Properties ◽  
Spacer Layer Thickness ◽  
Spacer Layer

Effect of spacer layer thickness on multi-stacked InGaAs quantum dots grown on GaAs (311)B substrate for application to intermediate band solar cells

2012 ◽  
Vol 111 (7) ◽  
pp. 074305 ◽  
Author(s):  
Yasushi Shoji ◽  
Kohei Narahara ◽  
Hideharu Tanaka ◽  
Takashi Kita ◽  
Katsuhiro Akimoto ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Layer Thickness ◽  
Intermediate Band ◽  
Intermediate Band Solar Cells ◽  
Spacer Layer Thickness ◽  
Spacer Layer

scholarly journals Mapping bound plasmon propagation on a nanoscale stripe waveguide using quantum dots: influence of spacer layer thickness

2015 ◽  
Vol 6 ◽  
pp. 2046-2051 ◽  
Author(s):  
Chamanei S Perera ◽  
Alison M Funston ◽  
Han-Hao Cheng ◽  
Kristy C Vernon
Keyword(s):  
Quantum Dots ◽  
Laser Beam ◽  
Layer Thickness ◽  
Near Field ◽  
Surface Distance ◽  
Spacer Layer Thickness ◽  
Spacer Layer ◽  
20 Nm ◽  
Mode A ◽  
Plasmon Propagation

In this paper we image the highly confined long range plasmons of a nanoscale metal stripe waveguide using quantum emitters. Plasmons were excited using a highly focused 633 nm laser beam and a specially designed grating structure to provide stronger incoupling to the desired mode. A homogeneous thin layer of quantum dots was used to image the near field intensity of the propagating plasmons on the waveguide. We observed that the photoluminescence is quenched when the QD to metal surface distance is less than 10 nm. The optimised spacer layer thickness for the stripe waveguides was found to be around 20 nm. Authors believe that the findings of this paper prove beneficial for the development of plasmonic devices utilising stripe waveguides.

Near Field Optical Spectroscopy of GaN/AlN Quantum Dots

2004 ◽  
Vol 831 ◽  
Author(s):  
A. Neogi ◽  
B. P. Gorman ◽  
H. Morkoç ◽  
T. Kawazoe ◽  
M. Ohtsu ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Near Field ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Spacer Layer Thickness ◽  
Spacer Layer ◽  
Lateral Coupling ◽  
Self Assembled ◽  
Spectrally Resolved

ABSTRACTWe investigate the spatial distribution and emission properties of self-assembled GaN/AlN quantum dots. High-resolution transmission electron microscopy reveals near vertical correlation among the GaN dots due to a sufficiently thin AlN spacer layer thickness, which allows strain induced stacking. Scanning electron and atomic force microscopy show lateral coupling due to a surface roughness of ∼ 50–60 nm. Near-field photoluminescence in the illumination mode (both spatially and spectrally resolved) at 10 K revealed emission from individual dots, which exhibits size distribution of GaN dots from localized sites in the stacked nanostructure. Strong spatial localization of the excitons is observed in GaN quantum dots formed at the tip of self-assembled hexagonal pyramid shapes with six [101 1] facets.

Arsenic pressure and spacer layer thickness effects on the optical properties of stacked InAs/InAlAs quantum dot array

2005 ◽  
Vol 2 (4) ◽  
pp. 1399-1403 ◽  
Author(s):  
M. Hjiri ◽  
F. Hassen ◽  
H. Maaref ◽  
A. Jbeli ◽  
M. Senes ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Dot ◽  
Layer Thickness ◽  
Spacer Layer Thickness ◽  
Spacer Layer

Effect of spacer layer thickness on the optical properties of stacked InAs/InAlAs quantum wires grown on InP (001)

2003 ◽  
Vol 101 (1-3) ◽  
pp. 259-261 ◽  
Author(s):  
B. Salem ◽  
G. Brèmond ◽  
M. Hjiri ◽  
F. Hassen ◽  
H. Maaref ◽  
...  
Keyword(s):  
Optical Properties ◽  
Layer Thickness ◽  
Quantum Wires ◽  
Spacer Layer Thickness ◽  
Spacer Layer

Increase of spectral width of stacked InAs quantum dots on GaAs by controlling spacer layer thickness

2011 ◽  
Vol 318 (1) ◽  
pp. 1113-1116
Author(s):  
Kazuma Tani ◽  
Shingo Fuchi ◽  
Ryota Mizutani ◽  
Toru Ujihara ◽  
Yoshikazu Takeda
Keyword(s):  
Quantum Dots ◽  
Layer Thickness ◽  
Spectral Width ◽  
Inas Quantum Dots ◽  
Spacer Layer Thickness ◽  
Spacer Layer
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