Size-dependent radiative decay time of excitons in GaN/AlN self-assembled quantum dots

2003 ◽  
Vol 83 (5) ◽  
pp. 984-986 ◽  
Author(s):  
S. Kako ◽  
M. Miyamura ◽  
K. Tachibana ◽  
K. Hoshino ◽  
Y. Arakawa
Keyword(s):  
Quantum Dots ◽  
Decay Time ◽  
Radiative Decay ◽  
Size Dependent ◽  
Self Assembled

The photoluminescence decay time of self-assembled InAs quantum dots covered by InGaAs layers

2006 ◽  
Vol 17 (23) ◽  
pp. 5722-5725 ◽  
Author(s):  
G W Shu ◽  
C K Wang ◽  
J S Wang ◽  
J L Shen ◽  
R S Hsiao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Decay Time ◽  
Inas Quantum Dots ◽  
Photoluminescence Decay ◽  
Self Assembled

Optical Properties of Wurtzite GaN and ZnO Quantum Dots

2004 ◽  
Vol 818 ◽  
Author(s):  
Vladimir A. Fonoberov ◽  
Alexander A. Balandin
Keyword(s):  
Quantum Dots ◽  
Decay Time ◽  
Radiative Decay ◽  
State Energy ◽  
Energy Gap ◽  
Dead Layer ◽  
Bulk Gan ◽  
Piezoelectric Field ◽  
Zno Quantum Dots ◽  
Valence Bands

AbstractWe have investigated exciton states in wurtzite GaN/AlN and ZnO quantum dots. A strong piezoelectric field in GaN/AlN quantum dots is found to tilt conduction and valence bands, thus pushing the electron to the top and the hole to the bottom of the GaN/AlN quantum dot. As a result, the exciton ground state energy in GaN/AlN quantum dots with heights larger than 3 nm exhibits a red shift with respect to bulk GaN energy gap. It is shown that the radiative decay time in GaN/AlN quantum dots is large and increases from 0.3 ns for quantum dots with height 1.5 nm to 1.1×103 ns for the quantum dots with height 4.5 nm. On the contrary, the electron and the hole are not separated in ZnO quantum dots. Moreover, a relatively thick “dead layer” is formed near the surface of ZnO quantum dots. As a result, the radiative decay time in ZnO quantum dots is small and decreases from 73 ps for quantum dots with diameter 1.5 nm to 29 ps for the quantum dots with diameter 6 nm.

Spectroscopic study of oscillator strength and radiative decay time of colloidal CdSe quantum dots

2018 ◽  
Vol 50 (2) ◽  
Author(s):  
Abdelnasser Aboulfotouh ◽  
Mohamed Fikry ◽  
Mona Mohamed ◽  
Magdy Omar ◽  
Hossam Rady ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spectroscopic Study ◽  
Oscillator Strength ◽  
Decay Time ◽  
Radiative Decay ◽  
Cdse Quantum Dots

Size-dependent radiative decay processes in graphene quantum dots

2012 ◽  
Vol 101 (16) ◽  
pp. 163103 ◽  
Author(s):  
Sung Kim ◽  
Dong Hee Shin ◽  
Chang Oh Kim ◽  
Soo Seok Kang ◽  
Jong Min Kim ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Radiative Decay ◽  
Graphene Quantum Dots ◽  
Size Dependent

scholarly journals Size-dependent excitongfactor in self-assembled InAs/InP quantum dots

2009 ◽  
Vol 79 (4) ◽  
Author(s):  
N. A. J. M. Kleemans ◽  
J. van Bree ◽  
M. Bozkurt ◽  
P. J. van Veldhoven ◽  
P. A. Nouwens ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Size Dependent ◽  
Self Assembled ◽  
Inp Quantum Dots

Size-dependent radiative decay time of confined excitons in CuCl microcrystals

1990 ◽  
Vol 73 (4) ◽  
pp. 271-274 ◽  
Author(s):  
T. Itoh ◽  
M. Furumiya ◽  
T. Ikehara ◽  
C. Gourdon
Keyword(s):  
Decay Time ◽  
Radiative Decay ◽  
Size Dependent

Size-dependent carrier dynamics in self-assembled CdTe/ZnTe quantum dots

2012 ◽  
Vol 132 (6) ◽  
pp. 1581-1583 ◽  
Author(s):  
Hong Seok Lee ◽  
Sang-Youp Yim ◽  
In Won Lee ◽  
Tae Whan Kim
Keyword(s):  
Quantum Dots ◽  
Carrier Dynamics ◽  
Size Dependent ◽  
Self Assembled

scholarly journals Size dependent carrier thermal escape and transfer in bimodally distributed self assembled InAs/GaAs quantum dots

2012 ◽  
Vol 111 (12) ◽  
pp. 123522 ◽  
Author(s):  
G. Muñoz-Matutano ◽  
I. Suárez ◽  
J. Canet-Ferrer ◽  
B. Alén ◽  
D. Rivas ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Size Dependent ◽  
Thermal Escape ◽  
Self Assembled

Size-dependent strain effects in self-assembled CdSe quantum dots with Zn0.38Cd0.23Mg0.39Se barriers

2006 ◽  
Vol 89 (23) ◽  
pp. 231109 ◽  
Author(s):  
J. S. Reparaz ◽  
A. R. Goñi ◽  
M. I. Alonso ◽  
M. N. Perez-Paz ◽  
M. C. Tamargo
Keyword(s):  
Quantum Dots ◽  
Cdse Quantum Dots ◽  
Strain Effects ◽  
Size Dependent ◽  
Dependent Strain ◽  
Self Assembled
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