- Title
- Temperature control for nano-scale films by spatially-separated atomic layer deposition based on generalized predictive control
- Creator
- He, Wen-Jie; Zhang, Hai-Tao; Chen, Zhiyong; Lin, Ji-Long; Tian, Kan; Shan, Bin; Chen, Rong
- Relation
- IEEE Transactions on Nanotechnology Vol. 14, Issue 6, p. 1094-1103
- Publisher Link
- http://dx.doi.org/10.1109/TNANO.2015.2471298
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2015
- Description
- This paper established a closed-loop temperature control system for a spatially-separated atomic layer deposition (S-ALD) reactor using generalized predictive control (GPC) algorithm. The GPC-based closed-loop control system rapidly and precisely stabilized the reactor temperature in the presence of thermal field disturbances. Compared with the proportion-integration differentiation (PID) control commonly used for S-ALD, the closed-loop GPC system attenuated reaction temperature oscillations when producing two-element nano-scale thin films. Furthermore, the proposed GPC system demonstrated the superiority in multi-element nano-laminates depositing efficiency by reducing the settling time with a substrate moving between different reactors. Electrical and optical properties of films verified the feasibility of the proposed GPC system. Finally, experimental results presented that the microstructure of the deposited ALD nanometer thin film was improved with the developed GPC system, compared with the PID strategy.
- Subject
- atomic layer deposition; predictive control; temperature control; GPC system
- Identifier
- http://hdl.handle.net/1959.13/1329499
- Identifier
- uon:26173
- Identifier
- ISSN:1536-125X
- Language
- eng
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