High quantum-yield luminescent MoS2 quantum dots with variable light emission created via direct ultrasonic exfoliation of MoS2 nanosheets

Jing-Yuan Wu; Xiao-Yang Zhang; Xiao-Dan Ma; Yun-Ping Qiu; Tong Zhang

doi:10.1039/C5RA19201C

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High quantum-yield luminescent MoS₂ quantum dots with variable light emission created via direct ultrasonic exfoliation of MoS₂ nanosheets†

Jing-Yuan Wu,^ab Xiao-Yang Zhang,^ab Xiao-Dan Ma,^ab Yun-Ping Qiu^a and Tong Zhang*^ab

Author affiliations

* Corresponding authors

^a School of Electronic Science and Engineering, Southeast University, Key Laboratory of Micro-Inertial Instrument and Advanced Navigation Technology, Ministry of Education, Nanjing, People's Republic of China
E-mail: tzhang@seu.edu.cn

^b Suzhou Key Laboratory of Metal Nano-Optoelectronic Technology, Suzhou Research Institute of Southeast University, Suzhou, People's Republic of China

Abstract

We report a sonication combined with ion intercalation method in an alkaline environment to fabricate MoS₂ quantum dots (QDs), with the quantum-yield of the QDs increasing from 0.99% to 4.84% with the additive sodium hydroxide. The QDs displaying variable photoluminescence emission were systematically studied and applied to the bio-imaging field.

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Article information

DOI: https://doi.org/10.1039/C5RA19201C
Article type: Communication
Submitted: 17 Sep 2015
Accepted: 27 Oct 2015
First published: 27 Oct 2015

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RSC Adv., 2015,5, 95178-95182

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High quantum-yield luminescent MoS₂ quantum dots with variable light emission created via direct ultrasonic exfoliation of MoS₂ nanosheets

J. Wu, X. Zhang, X. Ma, Y. Qiu and T. Zhang, RSC Adv., 2015, 5, 95178 DOI: 10.1039/C5RA19201C

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