Photoluminescence properties study of the Au/Au2S nanoshell

2002 ◽  
Vol 80 (6) ◽  
pp. 707-711
Author(s):  
J J Diao ◽  
F S Qiu ◽  
G D Chen ◽  
C Xi ◽  
Y Song
Keyword(s):  
Size Effect ◽  
Quantum Size Effect ◽  
Experimental Results ◽  
Nanometer Scale ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
The Core ◽  
Enhanced Photoluminescence ◽  
Quantum Size ◽  
Photoluminescence Peak

Photoluminescence experimental results of the Au/Au2S nanoshell (a nanometer-scale Au2S core coated by a thin Au shell) are presented in this note. An enhanced photoluminescence peak of Au coated Au2S is obtained near the blue–green region, compared with the photoluminescence region of bulk Au2S, which is near the orange–red region. The quantum-size effect and the core/shell nanostructure caused the blueshift photoluminescence of the Au2S/Au nanoshell. PACS Nos.: 81.05Ys, 78.55-m

The Emission Property of Phosphors LEDs Based on ZnCuInS/ZnSe/ZnS Quantum Dots

2014 ◽  
Vol 989-994 ◽  
pp. 623-625
Author(s):  
Ke Bi ◽  
Wen Yan Liu ◽  
Tian Yue Xu ◽  
Tie Qiang Zhang ◽  
Yu Zhang
Keyword(s):  
Quantum Dots ◽  
Photoluminescence Spectrum ◽  
Stokes Shift ◽  
Core Shell ◽  
Photoluminescence Properties ◽  
Red Emission ◽  
Light Emitting ◽  
Quantum Size ◽  
Gan Led ◽  
Photoluminescence Peak

.In this research, ZnCuInS/ZnSe/ZnS quantum dots (QDs) have been studied as an excellent red emitting source for blue GaN LED because of its non-toxic deep red emmission, and large Stokes shift properties. In the paper ZnCuInS/ZnSe/ZnS core/shell quantum dots were prepared with the particle size of 4.5nm. According to the measurement of photoluminescence spectrum emitted by ZnCuInS/ZnSe/ZnS core/shell quantum dots, the emitting peak of 700 nm and the full was achieved as red emitter.It was found that absorption edge and photoluminescence peak shifted to shorter wavelength with decreasing the nanocrystal size due to quantum size effect.Meanwhile, we were prepared ZnCuInS/ZnSe/ZnS core/shell quantum dot light emitting diodes and their photoluminescence properties were studied. After the suitable bias was applied on the films, increasing the ZnCuInS/ZnSe/ZnS QDs concentration in the blue GaN chips, red emission increased with decreasing LED’s blue light.

Pinning of photoluminescence peak positions for light-emitting porous silicon: An evidence of quantum size effect

1993 ◽  
Vol 71 (8) ◽  
pp. 1265-1267 ◽  
Author(s):  
Xun Wang ◽  
Daming Huang ◽  
Ling Ye ◽  
Min Yang ◽  
Pinghai Hao ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Light Emitting ◽  
Quantum Size ◽  
Photoluminescence Peak

Hydrothermal Preparation of TiO2-ZnO Nano Core-Shell Structure with Quantum Size Effect

2011 ◽  
Author(s):  
Shahab Khameneh Asl ◽  
M. Kianpour Rad ◽  
S. K. Sadrnezhaad ◽  
Muhammed Hasan Aslan ◽  
Ahmet Yayuz Oral ◽  
...  
Keyword(s):  
Size Effect ◽  
Shell Structure ◽  
Quantum Size Effect ◽  
Core Shell ◽  
Hydrothermal Preparation ◽  
Quantum Size ◽  
Core Shell Structure

Quantum-size effect in model nanocrystalline/amorphous mixed-phase silicon structures

1999 ◽  
Vol 59 (15) ◽  
pp. 10309-10314 ◽  
Author(s):  
Shintaro Nomura ◽  
Toshiaki Iitaka ◽  
Xinwei Zhao ◽  
Takuo Sugano ◽  
Yoshinobu Aoyagi
Keyword(s):  
Size Effect ◽  
Quantum Size Effect ◽  
Mixed Phase ◽  
Quantum Size ◽  
Silicon Structures
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