Photoluminescence Enhancement  of Aluminum Ion Intercalated MoS<sub>2</sub> Quantum Dots

Yanmin Kuang; Wenli He; Zhichao Zhu; Yaru Chen; Dongwei Ma; Xiaojuan Wang; Lijun Guo; Yulu He; Zhen Chi; Xia Ran; Luogang Xie

doi:10.1063/1674-0068/cjcp2206101

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Yanmin Kuang, Wenli He, Zhichao Zhu, Yaru Chen, Dongwei Ma, Xiaojuan Wang, Lijun Guo, Yulu He, Zhen Chi, Xia Ran, Luogang Xie. Photoluminescence Enhancement of Aluminum Ion Intercalated MoS2 Quantum Dots[J]. Chinese Journal of Chemical Physics . doi: 10.1063/1674-0068/cjcp2206101

Citation:

Yanmin Kuang, Wenli He, Zhichao Zhu, Yaru Chen, Dongwei Ma, Xiaojuan Wang, Lijun Guo, Yulu He, Zhen Chi, Xia Ran, Luogang Xie. Photoluminescence Enhancement of Aluminum Ion Intercalated MoS₂ Quantum Dots[J]. Chinese Journal of Chemical Physics . doi: 10.1063/1674-0068/cjcp2206101

Citation:

Yanmin Kuang, Wenli He, Zhichao Zhu, Yaru Chen, Dongwei Ma, Xiaojuan Wang, Lijun Guo, Yulu He, Zhen Chi, Xia Ran, Luogang Xie. Photoluminescence Enhancement of Aluminum Ion Intercalated MoS₂ Quantum Dots[J]. Chinese Journal of Chemical Physics . doi: 10.1063/1674-0068/cjcp2206101

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Photoluminescence Enhancement of Aluminum Ion Intercalated MoS₂ Quantum Dots

doi: 10.1063/1674-0068/cjcp2206101

1.
School of Physics and Electronics, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, Henan University, Kaifeng 475004, China
2.
School of Physics and Electronic Engineering, Zhengzhou University of Light Industry, Zhenzhou 450002, China
3.
Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004, China

More Information

Corresponding author: E-mail: juneguo@henu.edu.cn; lgxie@zzuli.edu.cn
Received Date: 2022-06-29
Accepted Date: 2022-10-06

Available Online: 2022-10-13

Abstract

Abstract

Low photoluminescence (PL) quantum yield of molybdenum disulﬁde (MoS₂) quantum dots (QDs) has limited practical application as potential fluorescent materials. Here, we report the intercalation of aluminum ion (Al³⁺) to enhance the PL of MoS₂ QDs and the underlying mechanism. With detailed characterization and exciton dynamics study, we suggest that additional surface states including new emission centers have been effectively introduced to MoS₂ QDs by the Al³⁺ intercalation. The synergy of new radiative pathway for exciton recombination and the passivation of non-radiative surface traps is responsible for the enhanced fluorescence of MoS₂ QDs. Our findings demonstrate an efficient strategy to improve the optical properties of MoS₂ QDs and are important for understanding the regulation effect of surface states on the emission of two dimensional sulfide QDs.
- Molybdenum disullfide,
- Quantum dot,
- Photoluminescence enhancement,
- Exciton dynamics

These authors contributed equally to this work.

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References(32)

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