Fabrication of blue luminescent MoS2 quantum dots by wet grinding assisted co-solvent sonication

被引：63

作者：

Ali, Junaid ^{[1
]}

Siddiqui, Ghayas Uddin ^{[1
]}

Choi, Kyung Hyun ^{[1
]}

Jang, Yunseok ^{[2
]}

Lee, Kangtaek ^{[3
]}

机构：

[1] Jeju Natl Univ, Dept Mech Engn, Jeju, South Korea

[2] Korea Inst Machinery & Mat, Dept Printed Elect, Taejon, South Korea

[3] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea

来源：

JOURNAL OF LUMINESCENCE | 2016年 / 169卷

关键词：

2D materials; Luminescence; MoS2; Quantum dots; Synthesis; EXFOLIATED MOS2; GRAPHENE; NANOSHEETS; ENERGY; PHOTOLUMINESCENCE; DISPERSIONS; EFFICIENT;

D O I：

10.1016/j.jlumin.2015.09.028

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Molybdenum disulfide (MoS2) belongs to transition-metal dichalcogenides (TMDs) family and has vital position among 2D materials. Here, an efficient strategy for the synthesis of zero-dimensional MoS2 quantum dots (QDs) has been represented. This strategy consists of wet grinding of pristine MoS2 in N-methyl-2-pyrrolidone (NMP) followed by sonication in NMP and 1,2-dichlorobenzene (o-DCB). The efficacy of this approach to synthesize MoS2 QDs has been reported by analyzing the as synthesized MoS2 QDs by different characterization techniques such as high resolution transmission electron microscopy, energy dispersive x-ray spectroscopy, Raman spectroscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy and UV-vis spectroscopy. The concentration (yield) of as synthesized MoS2 QDs was found to be 7 mg mL(-1). Most of the MoS2 QDs were measured around 2-5 nm in size. The as synthesized MoS2 QDs showed distinct blue luminescence upon UV excitation. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：342 / 347

页数：6

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[41] Graphene-based Schottky junction solar cells [J].