Details

Autor(en) / Beteiligte

• Heintze, M.

Titel

Versatile High Rate Plasma Deposition and Processing with very high Frequency Excitation

Ist Teil von

• MRS proceedings, 1997, Vol.467, p.471-482, Article 471

Ort / Verlag

New York, USA: Cambridge University Press

Erscheinungsjahr

1997

Link zum Volltext

Beschreibungen/Notizen

• The interest in plasma deposition using very high frequency (VHF) excitation arose after the preparation of a-Si:H at high growth rates was demonstrated. Subsequently the improved process flexibility and the control of material properties offered by the variation of the plasma excitation frequency was recognized. The preparation of amorphous and microcrystalline thin films in a VHF-plasma is described. The increased growth rates have been attributed to an enhancement of film precursor formation at VHF, to the decreased sheath thickness as well as to an enhancement of the surface reactivity by positive ions. Plasma diagnostic investigations show that the parameters mainly affected by the excitation frequency are the ion flux to the electrodes as well as the sheaths potentials and widths, rather than the plasma density.