Phase-Engineered Synthesis of Centimeter-Scale 1T′- and 2H-Molybdenum Ditelluride Thin Films
- Authors
- Young Hee Lee; Ki Kang Kim; Ji-Hoon Park; Hyun Kim; Seok Joon Yun; Jin Cheol Park; Jeong-Gyun Kim; Sung-Jin An; Sang Hoon Chae; 김수민
- Issue Date
- Jun-2015
- Publisher
- American Chemical Society
- Citation
- ACS Nano, v.9, no.6, pp 6548 - 6554
- Pages
- 7
- Journal Title
- ACS Nano
- Volume
- 9
- Number
- 6
- Start Page
- 6548
- End Page
- 6554
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147165
- DOI
- 10.1021/acsnano.5b02511
- ISSN
- 1936-0851
1936-086X
- Abstract
- We report the synthesis of centimeter-scale, uniform 1T'- and 2H-MoTe2 thin films via the tellurization of Mo thin films. 1T'-MoTe2 was initially grown and converted gradually to 2H-MoTe2 over a prolonged growth time under a Te atmosphere. Maintaining excessive Te was essential for obtaining the stable stoichionnetric 2H-MoTe2 phase. Further annealing under a lower partial pressure of Te at the same temperature, followed by a rapid quenching, led to the reverse phase transition from 2H-MoTe2 to 1T'-MoTe2. The orientation of the 2H-MoTe2 film was determined by the tellurization rate. Slow tellurization was the key for obtaining a highly oriented 2H-MoTe2 film over the entire area, while fast tellurization led to a 2H-MoTe2 film with a randomly oriented c-axis.
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Collections - 이과대학 > 화학과 > 1. Journal Articles
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