Materials Science-Poland · 2018 · 13 citations · 31 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMaterials ChemistryOptical MaterialsCrystalline MaterialsOptical Properties Of MaterialsOptical Properties Of SolidsOptical Thin FilmsRaman SpectroscopyRefractive IndexExtinction Coefficient MeasurementsMolar Extinction CoefficientOptical AbsorptionOptical PropertiesPolycrystalline MaterialsRaman SpectraScanning Electron MicroscopySurface Optical Properties
Abstract The main subject of this study are molecular structures and optical properties of boron-doped diamond films with [B]/[C] ppm ratio between 1000 and 10 000, fabricated in two molar ratios of CH 4 -H 2 mixture (1 % and 4 %). Boron-doped diamond (BDD) film on the fused silica was presented as a conductive coating for optical and electronic purposes. The scanning electron microscopy images showed homogenous and polycrystalline surface morphology. The Raman spectroscopy confirmed the growth of sp 3 diamond phase and sp 2 carbon phase, both regular and amorphous, on the grain boundaries, as well as the efficiency of boron doping. The sp 3 /sp 2 ratio was calculated using the Raman spectra deconvolution method. A high refractive index (in a range of 2.0 to 2.4 at λ= 550 nm) was achieved for BDD films deposited at 700 °C. The values of extinction coefficient were below 1.4 at λ= 550 nm, indicating low absorption of the film
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Diamond as an electronic material
Chris J.H. Wort, Richard Balmer · Materials Today · 2008 · 788 citations · Full text