Halide vapor phase epitaxy of monolayer molybdenum diselenide single crystals

Autor: Li Taotao, Yang Yang, Zhou Liqi, Sun Wenjie, Lin Weiyi, Liu Lei, Zou Xilu, Gao Si, Nie Yuefeng, Shi Yi, Wang Xinran
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: National Science Open, Vol 2 (2023)
Druh dokumentu: article
ISSN: 2097-1168
DOI: 10.1360/nso/20220055
Popis: Single-crystalline transition metal dichalcogenides (TMD) films are of potential application in future electronics and optoelectronics. In this work, a halide vapor phase epitaxy (HVPE) strategy was proposed and demonstrated for the epitaxy of molybdenum diselenide (MoSe2) single crystals, in which metal halide vapors were in-situ produced by the chlorination of molybdenum as sources for the TMD growth. Combined with the epitaxial sapphire substrate, unidirectional domain alignment was successfully achieved and monolayer single-crystal MoSe2 films have been demonstrated on a 2-inch wafer for the first time. A series of characterizations ranging from centimeter to nanometer scales have been implemented to demonstrate the high quality and uniformity of the MoSe2. This work provides a universal strategy for the growth of TMD single-crystal films.
Databáze: Directory of Open Access Journals