Unraveling the Origin of Interfacial Oxidation of InP-Based Quantum Dots: Implications for Bioimaging and Optoelectronics

2020 ◽  
Vol 3 (12) ◽  
pp. 12325-12333
Author(s):  
Ajit Vikram ◽  
Arwa Zahid ◽  
Saket S. Bhargava ◽  
Hyukjin Jang ◽  
Andre Sutrisno ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Interfacial Oxidation

scholarly journals Interfacial Oxidation and Photoluminescence of InP-Based Core/Shell Quantum Dots

2018 ◽  
Vol 30 (19) ◽  
pp. 6877-6883 ◽  
Author(s):  
Mickael D. Tessier ◽  
Edwin A. Baquero ◽  
Dorian Dupont ◽  
Valeriia Grigel ◽  
Eva Bladt ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Core Shell ◽  
Interfacial Oxidation

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

Attenuation of surface acoustic waves by quantum dots

1998 ◽  
Vol 77 (5) ◽  
pp. 1195-1202
Author(s):  
Andreas Knabchen Yehoshua, B. Levinson, Ora
Keyword(s):  
Quantum Dots ◽  
Acoustic Waves ◽  
Surface Acoustic Waves
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