Spectral characteristics and dynamics of a light hole type quantum dot doped with a single Mn atom

2012 ◽  
Vol 9 (5) ◽  
pp. 1284-1287
Author(s):  
D. E. Reiter ◽  
V. M. Axt ◽  
T. Kuhn
Keyword(s):  
Quantum Dot ◽  
Spectral Characteristics ◽  
Light Hole

scholarly journals Selective Doping of Quantum Dot Nanomaterials for Managing Intersubband Absorption, Dark Current, and Photoelectron Lifetime

MRS Advances ◽  
2017 ◽  
Vol 2 (14) ◽  
pp. 759-766 ◽  
Author(s):  
Kimberly Sablon ◽  
Andrei Sergeev ◽  
Xiang Zhang ◽  
Vladimir Mitin ◽  
Michael Yakimov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Dark Current ◽  
Spectral Characteristics ◽  
Nonradiative Recombination ◽  
Photovoltaic Devices ◽  
Electron Population ◽  
Selective Doping ◽  
Intersubband Absorption ◽  
Novel Approach ◽  
N Doping

ABSTRACTNovel approach to optimize quantum dot (QD) materials for specific optoelectronic applications is based on engineering of nanoscale potential profile, which is created by charged QDs. The nanoscale barriers prevent capture of photocarriers and drastically increase the photoelectron lifetime, which in turn strongly improves the photoconductive gain, responsivity, and sensitivity of photodetectors and decreases the nonradiative recombination losses of photovoltaic devices. QD charging may be created by various types of selective doping. To investigate effects of selective doping, we model, fabricated, and characterized AlGaAs/InAs QD structures with n-doping of QD layers, doping of interdot layers, and bipolar doping, which combines p-doping of QD layers with strong n-doping of the interdot space. We have measured spectral characteristics of photoresponse, photocurrent and dark current. The experimental data show that providing the same electron population of QDs, the bipolar doping creates the most contrasting nanoscale profile with the highest barriers around dots.

scholarly journals Probing the light hole/heavy hole switching with correlated magneto-optical spectroscopy and chemical analysis on a single quantum dot

2019 ◽  
Vol 30 (17) ◽  
pp. 175301
Author(s):  
A Artioli ◽  
P Rueda-Fonseca ◽  
K Moratis ◽  
J F Motte ◽  
F Donatini ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Quantum Dot ◽  
Optical Spectroscopy ◽  
Heavy Hole ◽  
Light Hole ◽  
Single Quantum ◽  
Single Quantum Dot

scholarly journals A light-hole exciton in a quantum dot

2013 ◽  
Vol 10 (1) ◽  
pp. 46-51 ◽  
Author(s):  
Y. H. Huo ◽  
B. J. Witek ◽  
S. Kumar ◽  
J. R. Cardenas ◽  
J. X. Zhang ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Light Hole

Influence of the position of InGaAs quantum dot array on the spectral characteristics of AlGaAs/GaAs photovoltaic converters

2012 ◽  
Vol 38 (11) ◽  
pp. 1024-1026
Author(s):  
S. A. Blokhin ◽  
A. M. Nadtochiy ◽  
S. A. Mintairov ◽  
N. A. Kalyuzhny ◽  
V. M. Emel’yanov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Spectral Characteristics
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