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Growth and doping studies of mono-crystalline CVD-diamond, dye-colored via discharge of high-power mW 2.45 GHz

Grant number: 14/18139-8
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): November 01, 2014
Effective date (End): February 10, 2017
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher:Vladimir Jesus Trava-Airoldi
Grantee:Mariana Amorim Fraga
Home Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovações (Brasil). São José dos Campos , SP, Brazil
Associated research grant:12/15857-1 - Scientific studies and innovation application on CVD diamond, DLC and carbon nanostructures obtained by chemical vapor deposition technique, AP.TEM


CVD-diamond has undergone many fundamental investigations and applications in INPE and that resulted in applications and even with the birth of "spin-off". While much has been done, the scientific community continues to pursue a higher degree of diamond applications where its mono crystalline structure is the main focus. With this proposal we aim at, unlike the proposed DD, but still innovate which is to get the mono crystalline diamond structure doped to obtain the different colorations via low pressures and low temperatures, ie via chemical reactions in the vapor phase (English CVD, Chemical Vapor Deposition), His colorful structure is due to the different possibilities of doping. It is expected from yellow structure due to doping with nitrogen, and blue due to doping with boron. Will be studied, theoretically and experimentally, the mechanisms to get it this desired structure whose applications in optics, electronics, heat sinks in "ships" high performance, as stated earlier may represent a differentiation with respect to single crystal diamond transparent. Thus, the behavior of the main parameters obtained via discharge microwave plasma (2.45 GHz) high power and its relationship to the degree of purity and monocristalinidade will be studying-. In this case, additional difficulties have to be resolved due to doping are made in a system of discharge plasma, not yet experienced in our laboratory. We want to get mono crystal CVD diamond-high purity in the form of blocks and show the possibilities of cutting the various plans. Again, it is known that one of the greatest difficulties is to control the thermal gradient of the substrate and gate from the substrate to initiate the nucleation process until the end of growth, which means a sophisticated design of the interior of the reactor. Analysis via Raman scattering spectroscopy, X-ray diffraction, SEM, AFM, make parts of everyday characterizations of this study. Search applications have viewed will be an ongoing task of this project.

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Scientific publications (7)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DIAS, V. M.; CHIAPPIM, W.; FRAGA, M. A.; MACIEL, H. S.; MARCIANO, F. R.; PESSOA, R. S. Atomic layer deposition of TiO2 and Al2O3 thin films for the electrochemical study of corrosion protection in aluminum alloy cans used in beverage. MATERIALS RESEARCH EXPRESS, v. 7, n. 7 JUL 2020. Web of Science Citations: 0.
GALVAO, NIERLLY; GUERINO, MARCIEL; CAMPOS, TIAGO; GRIGOROV, KORNELI; FRAGA, MARIANA; RODRIGUES, BRUNO; PESSOA, RODRIGO; CAMUS, JULIEN; DJOUADI, MOHAMMED; MACIEL, HOMERO. The Influence of AlN Intermediate Layer on the Structural and Chemical Properties of SiC Thin Films Produced by High-Power Impulse Magnetron Sputtering. MICROMACHINES, v. 10, n. 3 MAR 22 2019. Web of Science Citations: 0.
VIEIRA, JOSE; CONTIN, ANDRE; FRAGA, MARIANA AMORIM; CORAT, EVALDO JOSE; AIROLDI, VLADIMIR TRAVA. Growth and characterization of multilayer hot-filament chemical vapor deposition diamond coatings on WC-Co substrates. SURFACE INNOVATIONS, v. 7, n. 1, p. 4-11, MAR 2019. Web of Science Citations: 1.
DIAS, VANESSA; MACIEL, HOMERO; FRAGA, MARIANA; LOBO, ANDERSON O.; PESSOA, RODRIGO; MARCIANO, FERNANDA R. Atomic Layer Deposited TiO2 and Al2O3 Thin Films as Coatings for Aluminum Food Packaging Application. MATERIALS, v. 12, n. 4 FEB 2 2019. Web of Science Citations: 1.
GALVAO, NIERLLY; VASCONCELOS, GETULIO; PESSOA, RODRIGO; MACHADO, JOAO; GUERINO, MARCIEL; FRAGA, MARIANA; RODRIGUES, BRUNO; CAMUS, JULIEN; DJOUADI, ABDOU; MACIEL, HOMERO. A Novel Method of Synthesizing Graphene for Electronic Device Applications. MATERIALS, v. 11, n. 7 JUL 2018. Web of Science Citations: 1.
LEAL, G.; FRAGA, M. A.; RASIA, L. A.; MASSI, M. Impact of high N-2 flow ratio on the chemical and morphological characteristics of sputtered N-DLC films. SURFACE AND INTERFACE ANALYSIS, v. 49, n. 2, p. 99-106, FEB 2017. Web of Science Citations: 2.
FRAGA, M. A.; CONTIN, A.; RODRIGUEZ, L. A. A.; VIEIRA, J.; CAMPOS, R. A.; CORAT, E. J.; TRAVA AIROLDI, V. J. Nano- and microcrystalline diamond deposition on pretreated WC-Co substrates: structural properties and adhesion. MATERIALS RESEARCH EXPRESS, v. 3, n. 2 FEB 2016. Web of Science Citations: 6.

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