scholarly journals A theoretical study of electronic, thermal and surface properties of CdS/Cd1-xZnxS quantum dot and evaluation of exciton binding energy, exciton oscillator strength and radiative life time of the confined exciton as a function of dot radius

2018 ◽  
Vol 8 (3) ◽  
Keyword(s):  
Binding Energy ◽  
Quantum Dot ◽  
Surface Properties ◽  
Oscillator Strength ◽  
Theoretical Study ◽  
Life Time ◽  
Exciton Binding Energy ◽  
Radiative Life Time

DONOR BOUND EXCITONS CONFINED IN WURTZITE InGaN/GaN QUANTUM DOT NANOWIRE HETEROSTRUCTURES

2013 ◽  
Vol 27 (32) ◽  
pp. 1350186 ◽  
Author(s):  
MIN ZHANG ◽  
JUN-JIE SHI
Keyword(s):  
Binding Energy ◽  
Quantum Dot ◽  
Oscillator Strength ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Exciton Binding Energy ◽  
Optical Transitions ◽  
Mass Approximation ◽  
Nanowire Heterostructures ◽  
The Right

Within the framework of the effective-mass approximation, the donor bound exciton states and interband optical transitions in InGaN / GaN strained quantum dot (QD) nanowire heterostructures (NWHETs) are investigated using a variational method, in which the built-in electric field (BEF) effect due to the spontaneous and piezoelectric polarizations and the three-dimensional (3D) confinement of the electron and hole in the QD are considered. Our results show that the position of the ionized donor, the strong BEF, the In-composition and the QD structural parameters have a significant influence on the donor bound exciton binding energy, the electron interband optical transitions and the exciton oscillator strength. The donor bound exciton binding energy increases obviously if the donor position changes from the left-interface to the right-interface. The BEF reduces the bound exciton binding energy and the exciton oscillator strength. The donor bound exciton binding energy increases, if the In-fraction increases. The emission wavelength monotonically increases if the QD height and radius increase.

Effects of confined longitudinal optical phonons on the exciton binding energy in a cubic quantum dot

2003 ◽  
Vol 94 (1) ◽  
pp. 437-442 ◽  
Author(s):  
B. El Amrani ◽  
M. Fliyou ◽  
L. Bensaid ◽  
T. Lamcharfi ◽  
K. Rahmani ◽  
...  
Keyword(s):  
Binding Energy ◽  
Quantum Dot ◽  
Longitudinal Optical ◽  
Exciton Binding Energy ◽  
Optical Phonons

scholarly journals Exciton and Bi-exciton Binding Energy Calculation in a Core Shell Quantum Dot

2021 ◽  
Vol 1080 (1) ◽  
pp. 012012
Author(s):  
Shivani Rana ◽  
Sanjib Kabi ◽  
Kamakhya Prakash Misra ◽  
Saikat Chattopadhyay
Keyword(s):  
Binding Energy ◽  
Quantum Dot ◽  
Exciton Binding Energy ◽  
Core Shell ◽  
Energy Calculation ◽  
Binding Energy Calculation
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