Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films

Zhi Qiang Xie; Xiang Nan He; Wei Hu; Thomas Guillemet; Jong Bok Park; Yun Shen Zhou; Jaeil Bai; Yi Gao; Xiao Cheng Zeng; Lan Jiang; Yong Feng Lu

doi:10.1021/cg1010083

Author(s)

Zhi Qiang Xie
Xiang Nan He
Wei Hu
Thomas Guillemet
Jong Bok Park
Yun Shen Zhou
Jaeil Bai
Yi Gao
Lan Jiang
Yong Feng Lu

Detail(s)

Original language	English
Pages (from-to)	4928-4933
Journal / Publication	Crystal Growth and Design
Volume	10
Issue number	11
Publication status	Published - 3 Nov 2010
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1021/cg1010083 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-78149353417&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(66528eac-b5c8-47ec-b992-c6028485c686).html

Abstract

Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films using a wavelength-tunable CO₂ laser were studied. The wavelength of the CO₂ laser was tuned to 10.532 μm to match a vibration mode of a precursor molecule, ethylene. The density of the incident laser power was adjusted to modify diamond crystal orientation, optimize diamond quality, and achieve high-efficiency laser energy coupling. It was observed that at incident laser power densities between 5.0 × 10³ and 1.0 × 10⁴ W/cm², (100)-faceted diamond crystals were grown uniformly in the center areas of the diamond films. Higher incident laser powers, although further promoted growth rate, suppressed the uniformity of the diamond (100) facets. Best diamond quality was obtained within a laser power density range of 5.0 × 10 ³ to 6.7 × 10³ W/cm², whereas the highest energy efficiency was achieved within a laser power density range of 3.3 × 10³ to 6.7 × 10³ W/cm². The effects of the resonant laser energy coupling were investigated using optical emission spectroscopy. © 2010 American Chemical Society.

Research Area(s)

Bibliographic Note

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Citation Format(s)

[ RIS ] [ BibTeX ]

Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films. / Xie, Zhi Qiang; He, Xiang Nan; Hu, Wei et al.
In: Crystal Growth and Design, Vol. 10, No. 11, 03.11.2010, p. 4928-4933.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Xie, ZQ, He, XN, Hu, W, Guillemet, T, Park, JB, Zhou, YS, Bai, J, Gao, Y, Zeng, XC, Jiang, L & Lu, YF 2010, 'Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films', Crystal Growth and Design, vol. 10, no. 11, pp. 4928-4933. https://doi.org/10.1021/cg1010083

Xie, Z. Q., He, X. N., Hu, W., Guillemet, T., Park, J. B., Zhou, Y. S., Bai, J., Gao, Y., Zeng, X. C., Jiang, L., & Lu, Y. F. (2010). Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films. Crystal Growth and Design, 10(11), 4928-4933. https://doi.org/10.1021/cg1010083

Xie ZQ, He XN, Hu W, Guillemet T, Park JB, Zhou YS et al. Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films. Crystal Growth and Design. 2010 Nov 3;10(11):4928-4933. doi: 10.1021/cg1010083

Xie, Zhi Qiang ; He, Xiang Nan ; Hu, Wei et al. / Excitations of precursor molecules by different laser powers in laser-assisted growth of diamond films. In: Crystal Growth and Design. 2010 ; Vol. 10, No. 11. pp. 4928-4933.