A consolidated account of electrochemical determination of band structure parameters in II–VI semiconductor quantum dots: a tutorial review

2019 ◽  
Vol 21 (9) ◽  
pp. 4695-4716 ◽  
Author(s):  
Pravin Popinand Ingole
Keyword(s):  
Quantum Dots ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Energy Levels ◽  
Electrochemical Determination ◽  
Electronic Energy ◽  
Semiconductor Quantum Dots ◽  
Electronic Band ◽  
Nano Structure ◽  
Electronic Energy Levels

Probing absolute electronic energy levels in semiconductor quantum dots (Q-dots) is crucial for engineering their electronic band structure and hence for precise design of composite nano-structure based devices.

Biologically Engineered Quantum Dots for Biomedical Applications

2008 ◽  
Vol 1095 ◽  
Author(s):  
Ganna Chornokur ◽  
Sergei Ostapenko ◽  
Yusuf Emirov ◽  
Nadezhda Korsunska ◽  
Abraham Wolcott ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Local Stress ◽  
Blue Shift ◽  
Spectral Shift ◽  
Electronic Energy ◽  
Transmission Electron ◽  
Solid Substrates ◽  
Electronic Energy Levels ◽  
Electrophoresis Technique

AbstractWe report on a short-wavelength, “blue” spectral shift of the photoluminescence (PL) spectrum in CdSeTe/ZnS core/shell quantum dots (QDs) caused by bioconjugation with several monoclonal cancer related antibodies (ABs). Scanning PL spectroscopy was performed on samples dried on solid substrates at various temperatures. The influence of the AB chemical origin on the PL spectral shift was observed. The conjugation QD-AB reaction was confirmed using the agarose gel electrophoresis technique. The spectral shift is strongly increased and the process facilitated when the samples are dried above room temperature. The PL spectroscopic mapping revealed a profile of the PL spectral shift across the dried QD-AB spot. Transmission Electron Microscopy analyses of the samples were performed to reveal the shape and size of individual QDs. A mechanism of the “blue” shift is attributed to changes in the QD electronic energy levels caused by local stress field applied to the bio-conjugated QD.

scholarly journals Electronic band structure and optical gain of GaNxBiyAs1−x−y/GaAs pyramidal quantum dots

2016 ◽  
Vol 119 (14) ◽  
pp. 143103 ◽  
Author(s):  
Zhi-Gang Song ◽  
Sumanta Bose ◽  
Wei-Jun Fan ◽  
Shu-Shen Li
Keyword(s):  
Quantum Dots ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Optical Gain ◽  
Electronic Band

Electronic Energy Levels in an Asymmetric Quantum-Dots-in-a-Well Structure for Infrared Photodetectors

2008 ◽  
Vol 25 (7) ◽  
pp. 2645-2648 ◽  
Author(s):  
Wang Zhi-Cheng ◽  
Xu Bo ◽  
Chen Yong-Hai ◽  
Shi Li-Wei ◽  
Liang Zhi-Mei ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Electronic Energy ◽  
Infrared Photodetectors ◽  
Asymmetric Quantum ◽  
Electronic Energy Levels ◽  
Asymmetric Quantum Dots

Electronic energy levels and energy relaxation mechanisms in self-organized InAs/GaAs quantum dots

1996 ◽  
Vol 54 (24) ◽  
pp. 17738-17744 ◽  
Author(s):  
M. J. Steer ◽  
D. J. Mowbray ◽  
W. R. Tribe ◽  
M. S. Skolnick ◽  
M. D. Sturge ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Energy Levels ◽  
Energy Relaxation ◽  
Electronic Energy ◽  
Self Organized ◽  
Electronic Energy Levels

ELECTRONIC BAND STRUCTURE OF CARBON NANOTUBES WITH QUINOID STRUCTURE

2013 ◽  
Vol 27 (25) ◽  
pp. 1350179
Author(s):  
NGUYEN NGOC HIEU ◽  
NGUYEN PHAM QUYNH ANH
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Band Structure ◽  
Electronic Band Structure ◽  
Tight Binding ◽  
Electronic Energy ◽  
Electronic Band ◽  
Tight Binding Approximation ◽  
Quinoid Structure ◽  
Structure Of Carbon Nanotubes

In this paper, we fully describe the geometry of atomic structure of carbon nanotube with quinoid structure. Electronic energy band structure of carbon nanotubes with quinoid structure is studied by tight-binding approximation. In the presence of bond alternation, calculations show that only armchair (n, n) carbon nanotube (without twisting) remains metallic and zigzag (3ν - 1, -3ν + 1) CNT becomes metallic at the critical elongation. Effect of deformation on the change of band gap is also calculated and discussed.

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