Explanation of quantum dot blinking without long-lived trap hypothesis

TL;DR

This paper proposes a new model explaining quantum dot blinking behavior without relying on long-lived trap states, attributing luminescence bleaching to Auger-assisted relaxation via surface states.

Contribution

It introduces a simple, trap-free model for quantum dot blinking, challenging the long-held trap hypothesis and suggesting alternative relaxation mechanisms.

Findings

The model explains blinking without long-lived traps.

It attributes bleaching to Auger-assisted relaxation.

Possible experimental tests are discussed.

Abstract

A simple model explaining the experimental data on QDs luminescence blinking is suggested. The model does not assume the presence of the long-lived electron traps. The bleaching of the QD luminescence is a result of the Auger assisted radiationless relaxation of the excitation through the deep surface states. Possible ways of the experimental verification of the model are discussed.