Quantum confinement effects on Mn-doped InAs nanocrystals: A first-principles study

2008 ◽  
Vol 78 (4) ◽  
Author(s):  
J. T. Arantes ◽  
G. M. Dalpian ◽  
A. Fazzio
Keyword(s):  
First Principles ◽  
Quantum Confinement ◽  
Confinement Effects ◽  
First Principles Study ◽  
Quantum Confinement Effects ◽  
Mn Doped

Band Gap Widening and Quantum Confinement Effects of ZnO Nanowires by First-Principles Calculation

2011 ◽  
Vol 675-677 ◽  
pp. 243-246 ◽  
Author(s):  
Mei Li Guo ◽  
Xiao Dong Zhang
Keyword(s):  
Optical Properties ◽  
Band Gap ◽  
First Principles ◽  
Quantum Confinement ◽  
Density Functional ◽  
High Energy ◽  
Zno Nanowires ◽  
First Principles Calculation ◽  
Confinement Effects ◽  
Quantum Confinement Effects

ZnO nanowires are promising for photonic devices, biosensor and cancer cell imaging. We have performed a first-principles study to evaluate the electronic and optical properties of ZnO nanowires. We have employed the Perdew–Burke–Ernzerhof form of generalized gradient approximation in the frame work of density functional theory. Calculations have been carried out at different configurations. With decreasing diameter, the band gap of ZnO nanowires is increased due to the increase of quantum confinement effects. The results of imaginary part of the dielectric function indicate that the optical transition between valence band and conduction band has shifted to the high energy range as the diameter decreases. The ZnO nanowires show size-tunable optical properties.

Quantum confinement effects and strain-induced band-gap energy shifts in core-shell Si-SiO2nanowires

2011 ◽  
Vol 83 (24) ◽  
Author(s):  
O. Demichel ◽  
V. Calvo ◽  
P. Noé ◽  
B. Salem ◽  
P.-F. Fazzini ◽  
...  
Keyword(s):  
Band Gap ◽  
Quantum Confinement ◽  
Band Gap Energy ◽  
Core Shell ◽  
Confinement Effects ◽  
Gap Energy ◽  
Quantum Confinement Effects

Quantum Confinement Effects in Organic Lead Tribromide Perovskite Nanoparticles

2016 ◽  
Vol 120 (32) ◽  
pp. 18333-18339 ◽  
Author(s):  
Prashant Kumar ◽  
Chinnadurai Muthu ◽  
Vijayakumar C. Nair ◽  
K. S. Narayan
Keyword(s):  
Quantum Confinement ◽  
Confinement Effects ◽  
Quantum Confinement Effects ◽  
Organic Lead ◽  
Perovskite Nanoparticles

Strong quantum-confinement effects in the conduction band of germanium nanocrystals

2004 ◽  
Vol 84 (20) ◽  
pp. 4056-4058 ◽  
Author(s):  
C. Bostedt ◽  
T. van Buuren ◽  
T. M. Willey ◽  
N. Franco ◽  
L. J. Terminello ◽  
...  
Keyword(s):  
Conduction Band ◽  
Quantum Confinement ◽  
Confinement Effects ◽  
Quantum Confinement Effects ◽  
Germanium Nanocrystals
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