scholarly journals Polar interface optical phonon states and their dispersive properties of a wurtzite GaN quantum dot: quantum size effect

2010 ◽  
Vol 13 (1) ◽  
pp. 13801
Author(s):  
Zhang
Keyword(s):  
Quantum Dot ◽  
Size Effect ◽  
Optical Phonon ◽  
Quantum Size Effect ◽  
Quantum Size

CdZnSe/Zn(Be)Se Quantum Dot Structures: Size, Chemical Composition and Phonons

2003 ◽  
Vol 799 ◽  
Author(s):  
Y. Gu ◽  
Igor L. Kuskovsky ◽  
J. Fung ◽  
R. Robinson ◽  
I. P. Herman ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Chemical Composition ◽  
Quantum Dot ◽  
Raman Scattering ◽  
Size Effect ◽  
Quantum Size Effect ◽  
Optically Active ◽  
Photoluminescence Excitation ◽  
Quantum Size ◽  
Polarized Raman

ABSTRACTThe size and chemical composition of optically active CdZnSe/ZnSe and CdZnSe/Zn0.97Be0.03Se quantum dots (QDs) are determined using photoluminescence, photoluminescence excitation and polarized Raman scattering spectroscopies. We show that the addition of Be into the barrier enhances the Cd composition and the quantum size effect of optically active QDs. Additionally, surface phonons from QDs are observed in CdZnSe/ZnBeSe nanostructures.

Ultrafine ZnO quantum dot-modified TiO2 composite photocatalysts: the role of the quantum size effect in heterojunction-enhanced photocatalytic hydrogen evolution

2018 ◽  
Vol 8 (5) ◽  
pp. 1296-1303 ◽  
Author(s):  
Qian Chen ◽  
Ruifeng Tong ◽  
Xianjie Chen ◽  
Yakun Xue ◽  
Zhaoxiong Xie ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Size Effect ◽  
Hydrogen Evolution ◽  
Quantum Size Effect ◽  
Photocatalytic Hydrogen Evolution ◽  
Quantum Size ◽  
Composite Photocatalysts

The role of the quantum size effect in heterojunction-enhanced photocatalytic hydrogen evolution was investigated in the ultrafine ZnO QD-modified TiO2 nanowire model.

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