Quantum size effect on the luminous properties of excitonic states in a quasi-one-dimensional wurtzite GaN nanowire: Two-parameter variational approach

2013 ◽  
Vol 13 (6) ◽  
pp. 951-956
Author(s):  
Li Zhang ◽  
J.J. Shi
Keyword(s):  
Size Effect ◽  
Variational Approach ◽  
Quantum Size Effect ◽  
One Dimensional ◽  
Quantum Size ◽  
Gan Nanowire ◽  
Excitonic States ◽  
Two Parameter

QUANTUM SIZE EFFECT ON THE BINDING ENERGIES OF GROUND-STATE AND EXCITED-STATE EXCITONS IN A WURTZITE ZnO NANOWIRE

2013 ◽  
Vol 27 (09) ◽  
pp. 1350032
Author(s):  
LI ZHANG
Keyword(s):  
Ground State ◽  
Variational Approach ◽  
Quantum Wires ◽  
Emission Spectra ◽  
Numerical Results ◽  
Binding Energies ◽  
Dielectric Constants ◽  
Quantum Size ◽  
Excitonic States ◽  
Two Parameter

Taking into account the anisotropic confined situations of quasi-one-dimensional (Q1D) nanowires (NWs) in axial and radial directions and the anisotropic wurtzite ZnO crystal, a two-parameter variational approach is brought forward and applied to investigate luminous properties of excitonic states in wurtzite ZnO NW systems. The quantum size effects on the excitonic binding energies of the ground state and the first excited excitons as well as the emission spectra are analyzed in detail. Numerical calculations on a freestanding ZnO NW are performed. The calculated excitonic binding energies in the wurtzite ZnO NWs are far larger than those in cubic GaAs -based quantum wires and NWs with the same radius. This is ascribed to the large effective masses of electron and hole and relatively small dielectric constants in ZnO semiconductor. The excitons emission wavelengths calculated here qualitatively agree with recent experimental results of exciton spectra in Q1D ZnO NWs. This confirmed the reasonability and reliability of the present theoretical scheme and numerical results. The numerical results also show that the two-parameter variational approach is reasonable and necessary for the description of excitonic states in Q1D wurtzite ZnO NWs.

Quantum-size effect in model nanocrystalline/amorphous mixed-phase silicon structures

1999 ◽  
Vol 59 (15) ◽  
pp. 10309-10314 ◽  
Author(s):  
Shintaro Nomura ◽  
Toshiaki Iitaka ◽  
Xinwei Zhao ◽  
Takuo Sugano ◽  
Yoshinobu Aoyagi
Keyword(s):  
Size Effect ◽  
Quantum Size Effect ◽  
Mixed Phase ◽  
Quantum Size ◽  
Silicon Structures

scholarly journals TiN nanoparticles: small size-selected fabrication and their quantum size effect

2012 ◽  
Vol 7 (1) ◽  
Author(s):  
Luis Carlos Hernández Mainet ◽  
Luis Ponce Cabrera ◽  
Eugenio Rodriguez ◽  
Abel Fundora Cruz ◽  
Guillermo Santana ◽  
...  
Keyword(s):  
Size Effect ◽  
Quantum Size Effect ◽  
Quantum Size ◽  
Tin Nanoparticles

The electronic quantum size effect observed by195Pt NMR in the metal cluster compound Pt309Phen 36 * O30

1993 ◽  
Vol 26 (S1) ◽  
pp. 21-23 ◽  
Author(s):  
D. Putten ◽  
H. B. Brom ◽  
J. Witteveen ◽  
L. J. Jongh ◽  
G. Schmid
Keyword(s):  
Size Effect ◽  
Metal Cluster ◽  
Quantum Size Effect ◽  
Cluster Compound ◽  
Quantum Size
Sign in / Sign up

Export Citation Format

Share Document