Journal article
Effects of gas composition and r.f. power on properties of a–C:H/SiC:H composite films grown by plasma-enhanced chemical vapor deposition
Thin solid films, v 326(1), pp 154-159
1998
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Abstract
The effects of precursor gas composition and radio frequency (r.f.) power on the optical and structural properties of a–C:H/SiC:H composite thin films are investigated. The composite films are deposited at 25°C in a 13.56 MHz, r.f. driven asymmetric plasma reactor from a mixture of benzene, tetramethylsilane (TMS) and hydrogen. The structure and properties of the films are evaluated by an ellipsometer, Fourier transform infrared (FTIR) spectroscopy, a stress gauge, and an ultraviolet-visible spectrometer. The FTIR spectra of the composite films show characteristic peaks of a–C:H and a-SiC:H components. The precursor gas composition and r.f. power input are shown to affect the optical and structural properties of the composite and r.f. power input are shown to affect the optical and structural properties of the composite films significantly. As the fraction of TMS in the feed gas is increased, the deposition rate, transparency, and optical band gap of the film are increased, while the refractive index, intrinsic stress, and graphitization of the film are decreased. As the r.f. power is increased at a constant reactor pressure, the negative self-bias voltage at the substrate holder is increased and this results in decreases in the optical band gap, and increases in the intrinsic compressive stress and graphitization of the film.
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Details
- Title
- Effects of gas composition and r.f. power on properties of a–C:H/SiC:H composite films grown by plasma-enhanced chemical vapor deposition
- Creators
- Jeong W Yi - Drexel UniversityYoung H Lee - Drexel UniversityBakhtier Farouk - Drexel University
- Publication Details
- Thin solid films, v 326(1), pp 154-159
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000075693800021
- Scopus ID
- 2-s2.0-0032482823
- Other Identifier
- 991019168718404721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Coatings & Films
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter