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- Title
Making Large‐Area Titanium Disulfide Films at Reduced Temperature by Balancing the Kinetics of Sulfurization and Roughening.
- Authors
Li, Yifei; Singh, Akshay; Reidy, Kate; Jo, Seong Soon; Ross, Frances M.; Jaramillo, Rafael
- Abstract
The synthesis of large‐area TiS2 thin films is reported at temperatures as low as 500 °C using a scalable two‐step method of metal film deposition followed by sulfurization in an H2S gas furnace. It is demonstrated that the lowest‐achievable sulfurization temperature depends strongly on the oxygen background during sulfurization. This dependence arises because TiO bonds present a substantial kinetic and thermodynamic barrier to TiS2 formation. Lowering the sulfurization temperature is important to make smooth films, and to enable integration of TiS2 and related transition metal dichalcogenides—including metastable phases and alloys—into device technology.
- Subjects
METALLIC films; TITANIUM; GAS furnaces; TRANSITION metals; LOW temperatures; TRANSITION metal alloys
- Publication
Advanced Functional Materials, 2020, Vol 30, Issue 36, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202003617