Synthesis and characterization of monolayer Er-doped MoS2 films by chemical vapor deposition. (15th July 2018)

• Record Type: Journal Article
• Authors: Yang, Yong; Pu, Hongbin; Di, Junjie; Zang, Yuan; Zhang, Shan; Chen, Chunlan
• Is Part Of: Scripta materialia. Number 152(2018)
• Page Start: 64
• Page End: 68
• Publication Date: 2018-07-15
• Subjects: ErCl3·6H2O -- Er-doped MoS2 -- Quasi-closed crucible -- CVD; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2018.04.015
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Herein, we firstly present Er-doped MoS2 films with a quasi-closed crucible method in chemical vapor deposition (CVD) system. ErCl3 ·6H2 O is exploited as the dopant and assistant agent. The Raman analysis indicates that doped samples are uniform and high crystalline quality which has two prominent peaks with the minimum FWHM ~4 cm −1 of E2g 1 . However, Er dopant caused a red-shift in PL spectra. Furthermore, doped samples present a clear absorption edge at 1.8 eV and a small split peak of B exciton, which is attributed to the formation of impurity levels in Er-doped MoS2 based on the DFT calculations. Graphical abstract: Unlabelled Image