Temperature and substrate dependence of the morphology of glow-discharge-deposited a-Si:H

Gy Zentai, L. Pogány

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

a-Si:H layers were grown by glow discharge deposition at various temperatures (150, 250 and 350°C) on stainless steel, Corning glass and optical quality glass substrates coated with tin oxide. The thicknesses of the a-Si:H films varied from 1 to 4 microm. The surface and the fracture of the a-Si:H layers were investigated by means of scanning electron microscopy. For stainless steel the surface texture of the substrate propagated through the a-Si:H film even when it was 2 microm thick. At higher deposition temperatures the a-Si:H layer peeled off the stainless steel, but this did not occur for glass substrates. This shows that the stresses in films on metal substrates are different from those in films on glass substrates. Therefore the nucleation phenomena are dependent on the substrate material. A columnar morphology, which was enhanced and coarsened on increasing the temperature and the thickness, was observed on glass substrates. A simple explanation, which takes the self-bias effect of the substrate and the temperature dependence of the adatom mobility into account, is given for this observation.

Original languageEnglish
Pages (from-to)251-257
Number of pages7
JournalThin Solid Films
Volume116
Issue number1-3
DOIs
Publication statusPublished - Jun 22 1984

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Temperature and substrate dependence of the morphology of glow-discharge-deposited a-Si:H'. Together they form a unique fingerprint.

  • Cite this