Open AccessFilling of In(Ga)P/GaInP quantum dot electron states detected by microphotoluminescence
Author(s) -
A. Yu. Romanova,
K. G. Belyaev,
P. A. Buriak,
A. S. Vlasov,
N. A. Kalyuzhnyy,
S. A. Mintairov,
R. A. Salii,
D. V. Lebedev,
M. V. Rakhlin,
Vadim Smirnov,
А. А. Торопов,
А. А. Богданов,
Shahab Ramezanpour,
A. M. Mintairov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/7/077013
Subject(s) - quantum dot , quantum confined stark effect , electron , electric field , stark effect , spectral line , condensed matter physics , materials science , atomic physics , optical spectra , physics , optoelectronics , quantum mechanics
Microphotoluminescence (μPL) spectra of single In(Ga)P/GaInP quantum dots (QD) were investigated. Measurements were carried out at different optical pump power and at different electric field with constant optical pump. Filling of electron s -, p -, d -states was observed. Quantum confinement Stark effect (QCSE) was detected. Obtained PL life times of s -, p - electron states were 0.5 ns and 0.4 ns respectively. From spectra it is clearly seen that QDs have weak quantum confinement ( hω 0 ∼4-8meV).