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Synthesis of Small Ag-Sb-Te Nanocrystals with Composition Control

Abstract

Ternary telluride nanocrystals have gained increasing interest as materials for thermoelectric, optoelectronic, and phase-change memory applications. Synthetic approaches for colloidal multicomponent tellurides, however, remain sparse. Here, we report a convenient, amide-promoted synthesis for Ag-Sb-Te nanocrystals with small sizes and narrow size distributions (e.g., nanocrystal diameters of 3.5 ± 0.8 nm). We focus on achieving composition control for Ag-Sb-Te nanocrystals by adjusting the ratio of cationic precursors and find a broad solid solution range for AgxSb1-xTe1.5-x nanocrystals (x is from 0.3 and 0.6), which extends beyond that measured in Ag-Sb-Te thin films. The ability to produce size- and composition-controlled Ag-Sb-Te nanocrystals is a first step in achieving bottom-up assembled Ag-Sb-Te semiconductors for device applications.

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Supplementary files

Article information


Submitted
19 Feb 2020
Accepted
07 Oct 2020
First published
14 Oct 2020

This article is Open Access

J. Mater. Chem. C, 2020, Accepted Manuscript
Article type
Communication

Synthesis of Small Ag-Sb-Te Nanocrystals with Composition Control

A. Moser, O. Yarema, M. Yarema and V. Wood, J. Mater. Chem. C, 2020, Accepted Manuscript , DOI: 10.1039/D0TC00880J

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