Published in

IOP Publishing, Journal of Physics: Conference Series, 7(1400), p. 077013, 2019

DOI: 10.1088/1742-6596/1400/7/077013

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Filling of In(Ga)P/GaInP quantum dot electron states detected by microphotoluminescence

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Abstract 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 (hω0 ∼4-8meV).