Crystalline Semiconductor Boron Quantum Dots

2020 ◽  
Vol 12 (15) ◽  
pp. 17669-17675 ◽  
Author(s):  
Jinqian Hao ◽  
Guoan Tai ◽  
Jianxin Zhou ◽  
Rui Wang ◽  
Chuang Hou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Crystalline Semiconductor

Integration of nanocrystal quantum dots with crystalline semiconductor substrates: Structure, Stability, and Optical response

2004 ◽  
Vol 854 ◽  
Author(s):  
Atul Konkar ◽  
Siyuan Lu ◽  
Anupam Madhukar ◽  
Steven. M. Hughes ◽  
A. Paul Alivisatos
Keyword(s):  
Quantum Dots ◽  
Semiconductor Nanostructures ◽  
Optical Quality ◽  
Structure Stability ◽  
Chemical Contamination ◽  
Left Behind ◽  
Crystalline Semiconductor ◽  
Semiconductor Substrates ◽  
Nanocrystal Quantum Dots ◽  
Integrated Structures

ABSTRACTIntegration of epitaxical and colloidal semiconductor nanostructures into hybrid structures can potentially open unprecedented functionalities and applications. We present here some results of a study of the structural and optical nature of adsorbed InAs nanocrystal quantum dots (NCQDs) on GaAs(001) substrates containing buried nanostructures, providing the first evidence of excitation transfer from NCQDs to the substrate. Results are also presented for the overgrowth of GaAs on the InAs NCQDs, addressing the all important issue of approach to removal of the chemical contamination left behind by the solvent during adsorption of the NCQDS. It is shown that high structural and optical quality buried integrated structures are feasible, thus opening a new field of investigation.

scholarly journals Время жизни колебательных состояний молекул ДНК в функционализированных комплексах полупроводниковых квантовых точек

2018 ◽  
Vol 44 (2) ◽  
pp. 72
Author(s):  
Ф.Б. Байрамов ◽  
Е.Д. Полоскин ◽  
A.Л. Чернев ◽  
В.В. Топоров ◽  
М.В. Дубина ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Confinement ◽  
Characteristic Time ◽  
Dynamic Properties ◽  
Characteristic Time Scale ◽  
Structural Dynamic ◽  
Inelastic Light Scattering ◽  
Crystalline Semiconductor ◽  
Vibrational Excitations ◽  
Oscillatory Processes

AbstractResults of studying nanocrystalline nc-Si/SiO_2 quantum dots (QDs) functionalized by short oligonucleotides show that complexes of isolated crystalline semiconductor QDs are unique objects for detecting the manifestation of new quantum confinement phenomena. It is established that narrow lines observed in high-resolution spectra of inelastic light scattering can be used for determining the characteristic time scale of vibrational excitations of separate nucleotide molecules and for studying structural-dynamic properties of fast oscillatory processes in biomacromolecules.

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.

Semiconductor Quantum Dots

2014 ◽  
Keyword(s):  
Quantum Dots ◽  
Semiconductor Quantum Dots

New approach to the fabrication of CdSe/ZnSe quantum dots using a cleaved-edge overgrowth technique

1998 ◽  
Vol 184-185 (1-2) ◽  
pp. 283-287
Author(s):  
H Ko
Keyword(s):  
Quantum Dots ◽  
New Approach

Electron-hole long-range exchange interaction in semiconductor quantum dots

1998 ◽  
Vol 184-185 (1-2) ◽  
pp. 393-397 ◽  
Author(s):  
S Goupalov
Keyword(s):  
Quantum Dots ◽  
Exchange Interaction ◽  
Long Range ◽  
Semiconductor Quantum Dots ◽  
Electron Hole

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

New combination of quantum dots

Nature India ◽  
2011 ◽  
Keyword(s):  
Quantum Dots ◽  
New Combination
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