@Article{BaDuMaPiCrBa:2022:DePrAp,
               author = "Ba, Elhadji Cheikh Talibouya and Dumont, Marcello Rosa and 
                         Martins, Paulo S{\'e}rgio and Pinheiro, B{\'a}rbara da Silva and 
                         Cruz, Matheus Philippe Martins da and Barbosa, Jorge Wanderson",
          affiliation = "{Centro Federal de Educa{\c{c}}{\~a}o Tecnol{\'o}gica de Minas 
                         Gerais (CEFETMG)} and {Centro Federal de Educa{\c{c}}{\~a}o 
                         Tecnol{\'o}gica de Minas Gerais (CEFETMG)} and 
                         {Pontif{\'{\i}}cia Universidade Cat{\'o}lica de Minas Gerais 
                         (PUC-Minas)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)} and {Universidade Federal de Minas Gerais (UFMG)} and 
                         {Centro Federal de Educa{\c{c}}{\~a}o Tecnol{\'o}gica de Minas 
                         Gerais (CEFETMG)}",
                title = "Deconvolution process approach in Raman spectra of DLC coating to 
                         determine the sp3 hybridization content using the ID/IG ratio in 
                         relation to the quantification determined by X-ray photoelectron 
                         spectroscopy",
              journal = "Diamond and Related Materials",
                 year = "2022",
               volume = "122",
                pages = "e108818",
                month = "Feb.",
             keywords = "Deconvolution, Diamond-like carbon, Mathematical model, Raman 
                         spectroscopy, Statistics, X-ray photoelectron spectroscopy.",
             abstract = "Raman spectroscopy has contributed to many fields of materials 
                         science, for example, in studies addressing Diamond-Like Carbon 
                         coatings. In the literature, discussions have arisen due to the 
                         various interpretations of Raman spectra and some studies have not 
                         recommended using it to measure sp2 and sp3 hybridization 
                         contents. This article addresses the deconvolution process in 
                         Raman spectra, manipulating the Raman shift interval, the presence 
                         of Savitzky-Golay smoothing and the appearance of additional 
                         bands. X-ray photoelectron spectroscopy was used to quantify the 
                         sp2 and sp3 contents, which are discussed below in relation to the 
                         ID/IG ratio and the prediction of the amorphization trajectory of 
                         graphite. In an attempt to find a relationship between these 
                         characterization techniques, a polynomial equation was developed 
                         from thirty-three experimental results researched in the 
                         literature. The results indicated a coating belonging to the a-C:H 
                         class containing 18% of sp3. The relationship between the 
                         spectroscopies was complementary and the graphite amorphization 
                         trajectory was assertive. The coefficient of determination and the 
                         standard deviation proved to be useful parameters for selecting 
                         the representative spectrum of the coating. Neglecting or not the 
                         appearance of an additional band can provide modifications to the 
                         ID/IG ratio at the level of 52%. Representative results of the 
                         ID/IG ratio indicated the hypothesis of considering the intensity 
                         of the bands only as a function of height. The sp3 content 
                         predicted by the equation was maximized to any selected ID/IG 
                         value when the G Band was centered at approximately 1559 
                         cm\−1. It was observed that the equation can be used 
                         qualitatively with less errors in conditions where the 
                         deconvolutions present parameters similar to the experimental 
                         results whose sp3 content is between 20% and 39.9%.",
                  doi = "10.1016/j.diamond.2021.108818",
                  url = "http://dx.doi.org/10.1016/j.diamond.2021.108818",
                 issn = "0925-9635",
             language = "en",
           targetfile = "deconvolution_2022.pdf",
        urlaccessdate = "25 jun. 2024"
}