Optical and transport properties of low-dimensional semiconductor nanostructures

TL;DR

This paper explores the optical and transport properties of low-dimensional semiconductor nanostructures, focusing on electron-phonon interactions, long-time photoluminescence, and blinking phenomena in quantum dots.

Contribution

It provides a theoretical interpretation of electron-phonon interactions and discusses recent experimental observations of photoluminescence and blinking effects in quantum dot samples.

Findings

Long-time photoluminescence observed after laser excitation.

Blinking phenomena linked to electron-phonon interactions.

Insights into optical emission intermittence in quantum dots.

Abstract

The interpretation of the electronic kinetic processes in the quantum zero dimensional nanostructures is considered. The main mechanism of the processes is supposed to be the interaction of electrons with the optical phonons. An emphasis is put on the recently measured effect of the long-time photoluminescence of quantum dot samples, which is observed to occur after an illumination of the sample by a laser pulse. In addition to this, an attention is devoted to the possible origin of the optical effect of the blinking (intermittence) of the optical emission of certain quantum dot samples under a permanent optical excitation, and to another similar effect.