Electrothermal Local Annealing via Graphite Joule Heating on Two-Dimensional Layered Transistors
- Authors
- Yun, Yoojoo; Park, Jeongmin; Kim, Hyun; Bae, Jung Jun; Joo, Min-Kyu; Suh, Dongseok
- Issue Date
- Jul-2018
- Publisher
- AMER CHEMICAL SOC
- Keywords
- electrothermal local annealing (ELA); transition-metal dichalcogenides (TMDs); molybdenum disulfide (MoS2); surface adsorbates; Coulomb scattering
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.10, no.30, pp 25638 - 25643
- Pages
- 6
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 10
- Number
- 30
- Start Page
- 25638
- End Page
- 25643
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/4392
- DOI
- 10.1021/acsami.8b06630
- ISSN
- 1944-8244
1944-8252
- Abstract
- A simple but powerful device platform for electrothermal local annealing (ELA) via graphite Joule heating on the surface of transition-metal dichalcogenide, is suggested here to sustainably restore intrinsic electrical properties of atomically thin layered materials. Such twodimensional materials are easily deteriorated by undesirable surface/interface adsorbates and are screened by a high metalto-semiconductor contact resistance. The proposed ELA allows one to expect a better electrical performance such as an excess electron doping, an enhanced carrier mobility, and a reduced surface traps in a monolayer molybdenum disulfide (MoS2)/graphite heterostructure. The thermal distribution of local heating measured by an infrared thermal microscope and estimated by a finite element calculation shows that the annealing temperature reaches up to >400 K at ambient condition and the high efficiency of site-specific annealing is demonstrated unlike the case of conventional global thermal annealing. This ELA platform can be further promoted as a practical gas sensor application. From an O-2 cycling test and a low-frequency noise spectroscopy, the graphite on top of the MoS2 continuously recovers its initial condition from surface adsorbates. This ELA technique significantly improves the stability and reliability of its gas sensing capability, which can be expanded in various nanoscale device applications.
- Files in This Item
-
Go to Link
- Appears in
Collections - ICT융합공학부 > 응용물리전공 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.