Issue 20, 2020

Controlling the nucleation process of InP/ZnS quantum dots using zeolite as a nucleation site

Abstract

As a representative of III–V semiconductor materials, InP/ZnS quantum dots are regarded as the star material in the field of light-emitting devices due to their low toxicity and suitable luminescence range. However, there are still some major problems in the preparation process of InP/ZnS QDs, such as phosphine precursors are expensive and difficult to preserve, the nucleation time of short wavelength InP/ZnS QDs is too short and the size distribution is too large. In this paper, we'll replace the traditional tris(trimethylsilyl)phosphine with tris(diethylamino)phosphine as a cheaper phosphine precursor and propose a novel and convenient method for adjusting the luminescence wavelength of InP/ZnS QDs. Different from the traditional method to adjust the emission wavelength by changing the nucleation time, the emission wavelength of InP/ZnS QDs was regulated by changing the number of initially formed cores. Zeolites provide a nucleation site for the InP cores. InP/ZnS QDs that emit between 522 nm and 589 nm were obtained. Moreover, the obtained InP/ZnS QDs have good monochromaticity, and the minimum half-width (half-full width) is up to 48 nm. This method provides a new way to adjust the size of quantum dots with good performance.

Graphical abstract: Controlling the nucleation process of InP/ZnS quantum dots using zeolite as a nucleation site

Supplementary files

Article information

Article type
Paper
Submitted
19 Jan 2020
Accepted
17 Apr 2020
First published
20 Apr 2020

CrystEngComm, 2020,22, 3474-3481

Controlling the nucleation process of InP/ZnS quantum dots using zeolite as a nucleation site

X. Zhou, J. Ren, X. Dong, X. Wang, T. Seto and Y. Wang, CrystEngComm, 2020, 22, 3474 DOI: 10.1039/D0CE00078G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements