Effect of Ultraviolet Irradiation on Photo-Physical and Surface Electronic Properties of MoS2

被引：4

作者：

Kumar, Vijendra ^{[1
]}

Shukla, R. K. ^{[1
]}

Shakya, Jyoti ^{[2
]}

机构：

[1] Univ Lucknow, Dept Phys, Lucknow 226007, Uttar Pradesh, India

[2] Indian Inst Sci, Dept Phys, Bengaluru 560012, India

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2020年 / 20卷 / 10期

关键词：

Molybdenum Disulfide; Work Function; Fermi Level; Ultra-Violet Irradiation; EXFOLIATION; FABRICATION; NANOSHEETS; WS2;

D O I：

10.1166/jnn.2020.18581

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this study, exfoliation of molybdenum disulfide (MoS2) using the chemical exfoliation method was successfully achieved via probe sonication followed by centrifugation. The observed ultraviolet visible (UV-Vis) spectra of the MoS2 dispersions indicated the presence of a few layers of MoS2. The morphological, structural, optical and surface electronic properties before and after UV light irradiation were investigated by the technique of X-ray diffraction, the Raman spectroscopic measurements, transmission electron microscopy (TEM), and the scanning Kelvin probe microscopy (SKPM). It was observed that after UV irradiation, the Fermi level moves towards the valence band.

引用

页码：6500 / 6504

页数：5

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