Ultraviolet laser photolysis of hydrocarbons for nondiamond carbon suppression in chemical vapor deposition of diamond films
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | LI, Li-Sha | |
| hal.structure.identifier | Department of Electrical Engineering | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CONSTANTIN, Loic | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | LI, Da-Wei | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | LIU, Lei | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | KERAMATNEJAD, Kamran | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | AZINA, Clio | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | HUANG, Xi | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | GOLGIR, Hossein Rabiee | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | LU, Yao | |
| hal.structure.identifier | Department of Mechanical and Materials Engineering | |
| dc.contributor.author | AHMADI, Zahra | |
| hal.structure.identifier | Department of Mechanical and Materials Engineering | |
| dc.contributor.author | WANG, Fei | |
| hal.structure.identifier | Department of Mechanical and Materials Engineering | |
| dc.contributor.author | SHIELD, Jeffrey | |
| hal.structure.identifier | Department of Mechanical and Materials Engineering | |
| dc.contributor.author | CUI, Bai | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | SILVAIN, Jean-François | |
| hal.structure.identifier | Department of Electrical Engineering | |
| dc.contributor.author | LU, Yong-Feng | |
| dc.date.issued | 2018 | |
| dc.identifier.issn | 2095-5545 | |
| dc.description.abstractEn | In this work, we demonstrate that ultraviolet (UV) laser photolysis of hydrocarbon species alters the flame chemistry such that it promotes the diamond growth rate and film quality. Optical emission spectroscopy and laser-induced fluorescence demonstrate that direct UV laser irradiation of a diamond-forming combustion flame produces a large amount of reactive species that play critical roles in diamond growth, thereby leading to enhanced diamond growth. The diamond growth rate is more than doubled, and diamond quality is improved by 4.2%. Investigation of the diamond nucleation process suggests that the diamond nucleation time is significantly shortened and nondiamond carbon accumulation is greatly suppressed with UV laser irradiation of the combustion flame in a laser-parallel-to-substrate geometry. A narrow amorphous carbon transition zone, averaging 4 nm in thickness, is identified at the film–substrate interface area using transmission electron microscopy, confirming the suppression effect of UV laser irradiation on nondiamond carbon formation. The discovery of the advantages of UV photochemistry in diamond growth is of great significance for vastly improving the synthesis of a broad range of technically important materials. | |
| dc.language.iso | en | |
| dc.publisher | Nature Publishing Group | |
| dc.title.en | Ultraviolet laser photolysis of hydrocarbons for nondiamond carbon suppression in chemical vapor deposition of diamond films | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1038/lsa.2017.177 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Light: Science and Applications | |
| bordeaux.page | 17177 (9 p.) | |
| bordeaux.volume | 7 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01798354 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01798354v1 | |
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