Studies of In and N composition effects on the optical properties and surface morphology of GaInNAs quantum dots grown by rf-plasma assisted MBE

2003 ◽  
Author(s):  
K.C. Yew ◽  
S.F. Yoon ◽  
Z.Z. Sun ◽  
T.K. Ng ◽  
W.K. Loke ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Surface Morphology ◽  
Rf Plasma ◽  
Composition Effects

scholarly journals Surface morphology and optical properties of InGaN quantum dots with varying growth interruption time

2019 ◽  
Vol 7 (1) ◽  
pp. 015903 ◽  
Author(s):  
Yangfeng Li ◽  
Zijing Jin ◽  
Yu Han ◽  
Chunyu Zhao ◽  
Jie Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Surface Morphology ◽  
Growth Interruption

Epitaxal growth of InGaN quantum dots grown by MOVPE: Effect of capping process on the structural and optical properties

2005 ◽  
Vol 892 ◽  
Author(s):  
Tomohiro Yamaguchi ◽  
Kathrin Sebald ◽  
Juergen Gutowski ◽  
Stephan Figge ◽  
Detlef Hommel
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Surface Morphology ◽  
Vapor Phase ◽  
Growth Temperature ◽  
Electronic States ◽  
The Other ◽  
Structural And Optical Properties ◽  
Luminescence Efficiency ◽  
Protection Layer

AbstractThe surface morphology of thin InxGa1-xN layers in uncapped structures and the overgrowth using GaN or InxGa1-xN with a lower In content than the InxGa1-xN layer as the protection layer of the InxGa1-xN layer were investigated in addition to their dependence on growth temperature during the growth by metalorganic vapor phase epitaxy (MOVPE). It was necessary to decrease the growth temperature of the InxGa1-xN layer in order to realize homogeneous dots. In order to obtain a high luminescence efficiency, on the other hand, it was essential to increase the growth temperature of the protection layer. Sharp lines related to the localized electronic states, which are attributed to InGaN quantum dots, were observed by micro-photoluminescence (μ-PL) for the samples with the InxGa1-xN layers protected by the InxGa1-xN layers grown at 700∼740°C.

Synthesis, Characterization and Optical Properties of CdSe and ZnSe Quantum Dots

2017 ◽  
Vol 7 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Deepak Kumar Gupta ◽  
Mahesh Verma ◽  
Dinesh Patidar ◽  
Kananbala Sharma ◽  
N.S. Saxena
Keyword(s):  
Quantum Dots ◽  
Optical Properties

Optical Properties of Sputtered Silver Granular Films

2005 ◽  
Vol 480-481 ◽  
pp. 287-292 ◽  
Author(s):  
S.E. Paje ◽  
F. Teran ◽  
J.M. Riveiro ◽  
J. Llopis ◽  
M.A. García ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Optical Properties ◽  
Optical Absorption ◽  
Surface Morphology ◽  
Silver Clusters ◽  
Plasmon Excitation ◽  
Granular Films ◽  
Silver Films ◽  
Atomic Force ◽  
Atomic Force Micrographs

In this research we study optical absorption and morphology of silver films prepared with a sputtering method. Silver granular films are obtained on a glass substrate for films with thickness smaller than about 60 Å. Superficial silver clusters of around 100 nm in diameter are clearly seen in the atomic force micrographs. The absorption of these samples are characterized by plasmon excitation in the 450-650 nm spectral range, which differs from the known excitation of silver nanoparticles fabricated by different techniques. The optical absorption of silver granular films depend on sputtering conditions like substrate temperature or deposition rate and correlates with the surface morphology.

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