X-ray Photoelectron Spectroscopy of Layered Semiconductor WS2 Single Crystals

層狀半導體二硫化鎢的XPS物性研究

嚴本嘉(Pen-Chia Yen) ； 李修至(Hsiu-Chih Lee)\d\d)

《台北海洋技術學院學報》 3卷1期 (2010/03) Pp. 1-12

https://doi.org/10.29770/JTCMT.201003.0001

摘要

過渡金屬的硫化物如二硫化鎢，二硫化鉬，具有一些廣泛的特性，常應用固態潤滑劑，太陽能電池，硫化氫觸媒。。等用途。最近有些研究，，去改善層狀半導體的光導電率。雖然有許多不同的應用，但在理論上與實驗上，對二硫化鎢的物性研究仍然相當匱乏。我們致力於研究層狀半導體二硫化鎢，瞭解其特性，我們用化學氣相傳導法，以溴為傳導劑，生長WS2單晶。用XPS去研究其W 4f和 S 2p光電子能譜。

關鍵字

二硫化鎢 ； 層狀半導體 ； 光導電率 ； 化學氣相傳導法 ； XPS光電子能譜

並列摘要

From recent investigations, these compounds of transition-metal dichalcogenides, TX2 where T=W or Mo and X=S or Se have been attractive in a variety of important technologies such as solid lubricants, photovoltaic solar cells, hydrosulphurization catalysts etc. Despite their various technological applications, the theoretical and experimental understanding of the solid-state properties of WS2 are still relatively incomplete.Our current effort has been on the effect of WS2 properties. Single crystals of WS2 are grown using the chemical vapor transport method with Br2 as the transport agent. The XPS spectra of W 4f and S 2p core electron are defined and the chemical states of tungsten and sulfide are discussed for the WS2 single crystal.

並列關鍵字

WS2 ； layered semiconductor ； photoconductivity ； chemical vapor transport method ； X-ray photoelectron spectroscopy XPS

參考文獻

Mattheiss, L. F.(1973).Band Structures of Transition-Metal-Dichalcogenide Layer Compounds.Physical Review B.8(8),3719-3740.

Tributsch, H.(1979).Electrochemical Solar Cells Based on Layer-Type Transition Metal Compounds: Performance of Electrode Material.Solar Energy Mater.1(3-4),257-269.

Kertesz, M.,Hoffmann, R.(1984).Octahedral vs. Trigonal-Prismatic Coordination and Clustering in Transition-Metal Dichalcogenides.J. Am. Chem. Soc..106,3453-3461.

Yen, P. C.,Huang, Y. S.,Tiong, K. K.(2004).Growth and Characterization of Rhenium-Doped WS2 Single Crystals.J. Phys.: Condens. Matter.16,2171-2180.

(Thermo VG Scientific: “Avantage Software,” West Sussex, England).