Tuning Optical Properties of AgInS2 Quantum Dots by the Change of Ag-In Stoichiometry for their Light-emitting Applications

2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP) Pub Date : 2020-11-09 DOI:10.1109/NAP51477.2020.9309659

N. Doskaliuk, Y. Babyuk, Andrii H. Hotynchan, G. Okrepka, Y. Khalavka

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Abstract

Due to environmental friendly composition and low toxicity together with high quantum yield ternary I-III-IV semiconductor nanocrystals competes successfully with wellunderstood II-IV quantum dots. However, the undeveloped synthesis procedure, a vast number of compounds, and competing reactions as well as poor understanding of the origin of their optical properties leave a wide place to research. AgInS}}$_{\mathbf{2}}$ quantum dots were synthesized in aqueous media by adding of sulfur precursor solution to the solution containing Ag and different concentrations of In cations together with mercaptoacetic acid as a stabilizer. We have shown the complex dependence of the optical properties of AgInS}$_{\mathbf{2}}$ quantum dots on In to Ag precursor ratio arising from the changing of intrinsic point defect structure. This dependence opens the way of tuning their color emission for light-emitting devises creation.

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通过改变银银化学计量来调整AgInS2量子点的光学性质，以实现其发光应用

由于对环境友好的组成和低毒性以及高量子产率，三元I-III-IV半导体纳米晶体成功地与众所周知的II-IV量子点竞争。然而，未开发的合成程序、大量的化合物、相互竞争的反应以及对其光学性质起源的了解不足，为研究留下了广阔的空间。AgInS}}$ {\mathbf{2}}$量子点是在含有Ag和不同浓度的in阳离子的溶液中加入硫前驱体溶液，巯基乙酸作为稳定剂，在水介质中合成的。我们已经证明了AgInS}$_{\mathbf{2}}$量子点的光学性质与由本征点缺陷结构变化引起的In与Ag前体比的复依赖关系。这种依赖关系为发光器件的创造打开了调整其颜色发射的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2020 IEEE 10th International Conference Nanomaterials: Applications & Properties (NAP)

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