Atomic Layer Deposition ZnO:N Thin Film Transistor: The Effects of N Concentration on the Device Properties
SCIE
SCOPUS
- Title
- Atomic Layer Deposition ZnO:N Thin Film Transistor: The Effects of N Concentration on the Device Properties
- Authors
- Lim, SJ; Kim, JM; Kim, D; Kwon, S; Park, JS; Kim, H
- Date Issued
- 2010-01
- Publisher
- ELECTROCHEMICAL SOC INC
- Abstract
- The electrical properties of atomic layer deposition (ALD) nitrogen-doped ZnO (ZnO:N) thin films were investigated as a function of incorporated nitrogen concentration. The nitrogen concentrations in the films were controlled by using different concentrations of NH4OH solution, which was used as a single source for the reactant and nitrogen doping for ALD ZnO:N. The carrier concentrations in ALD ZnO:N decreased down to 6.13x10(13)/cm(3) using 29% NH4OH solution. Thin film transistors (TFTs) were fabricated using ALD ZnO:N thin films with different N contents as active channel layers. The device properties were significantly changed by the amount of nitrogen incorporation due to the change in the electrical properties of ZnO:N films. Especially, threshold voltages were changed from 20.0 to 3.1 V by adjusting nitrogen doping. Additionally, dc bias stability was enhanced by the increment in nitrogen concentration, producing a robust TFT at high nitrogen incorporation. Finally, a high performance flexible TFT was fabricated using ALD ZnO:N as an active layer on poly(ethylene naphthalate) substrate.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11187
- DOI
- 10.1149/1.3269973
- ISSN
- 0013-4651
- Article Type
- Article
- Citation
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 157, no. 2, page. H214 - H218, 2010-01
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