Modeling of microcrystalline silicon film deposition in a capacitively coupled radio-frequency plasma reactor

Journal Article · Sat Jan 15 00:00:00 EST 2005 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.1821639· OSTI ID:20664989

Satake, Koji; Kobayashi, Yasuyuki ^[1]

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1. Advanced Technology Research Center, Mitsubishi Heavy Industries, Limited, 1-8-1, Sachiura, Kanazawa-ku, Yokohama, 236-8515 (Japan)

We present a numerical model of plasma-enhanced chemical-vapor deposition of hydrogenated microcrystalline silicon ({mu}c-Si:H) film from SiH{sub 4} and H{sub 2} gas mixtures in a capacitively coupled radio-frequency plasma reactor. The model takes into account electron-impact, gas-phase, and surface reactions within a well-mixed reactor model. Plasma parameters such as the electron density, the electron temperature, and the electron-impact reaction rates are determined through a discharge model and used as inputs for the reactor model. The gas-phase reactions include electron-impact and neutral-neutral reactions. Some of the surface reaction rates are determined using quantum chemical calculations and transition state theory. In the reactor model, concentrations of each chemical species are calculated at steady state using mass conservation equation uniformed throughout the reactor. Numerical results of the deposition rate as a function of the plasma reactor operating parameters show good agreement with experiments. Based on the model, the correlation between {mu}c-Si:H properties, such as the crystal grain orientation and the hydrogen content, and deposition operating parameters has been studied using a design of experiment. Finally, optimal operating parameters are investigated using optimization techniques.

• OSTI ID: 20664989
• Journal Information: Journal of Applied Physics, Vol. 97, Issue 2; Other Information: DOI: 10.1063/1.1821639; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL VAPOR DEPOSITION
CORRELATIONS
CRYSTALS
ELECTRON DENSITY
ELECTRON TEMPERATURE
ELECTRONS
GRAIN ORIENTATION
HYDROGEN
MIXTURES
OPTIMIZATION
PLASMA
PLASMA DENSITY
PLASMA SIMULATION
RADIOWAVE RADIATION
REACTION KINETICS
SEMICONDUCTOR MATERIALS
SILANES
SILICON
SURFACES
THIN FILMS