Issue 39, 2018

Frontier challenges in doping quantum dots: synthesis and characterization

Abstract

Impurity doping in semiconductor quantum dots (QDs) has numerous prospects in implementing and altering their properties and technologies. Herein, we review the state-of-the-art doping techniques arising from colloidal synthesis methods. We first discuss the advantages and challenges involved in doping; we then discuss various doping techniques, including clustering of dopants as well as expulsion out of the lattice due to self-purification. Some of these techniques have been shown to open up a new generation of robust doped semiconductor quantum dots with cluster-free doping which will be suitable for various spin-based solid-state device technologies and overcome the longstanding challenges of controlled impurity doping. Further, we discuss inhibitors such as defects, clustering and interfaces, followed by current open questions. These include pathways to obtain uniform doping in the required radial position with unprecedented control over the dopant concentration and the size of the QDs.

Graphical abstract: Frontier challenges in doping quantum dots: synthesis and characterization

Article information

Article type
Review Article
Submitted
24 Apr. 2018
Accepted
03 Jūn. 2018
First published
18 Jūn. 2018
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2018,8, 22103-22112

Frontier challenges in doping quantum dots: synthesis and characterization

M. Makkar and R. Viswanatha, RSC Adv., 2018, 8, 22103 DOI: 10.1039/C8RA03530J

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