Publications by authors named "Alexey Popovich"
Article Synopsis
- Ion implantation in diamonds is crucial for creating conductive microstructures and isolated photon emitters, with emission lines HR1 and HR2 observed around 536 nm and 560 nm.
- The study involved a thorough examination of helium-related optical centers in natural single-crystal type IIa diamonds, using a 700 nm-thick layer subjected to multiple-energy helium ion implantation and subsequent annealing at various temperatures.
- Results revealed over a dozen unique photoluminescence centers within the 530-630 nm range, emphasizing the impact of annealing on the spectra and identifying specific bands related to interstitial defects in diamonds.
Chemical vapor deposition synthesis of graphene on polycrystalline copper substrates from methane is a promising technique for industrial production and application. However, the quality of grown graphene can be improved by using single-crystal copper (111). In this paper, we propose to synthesize graphene on epitaxial single-crystal Cu film deposited and recrystallized on a basal-plane sapphire substrate.
View Article and Find Full Text PDFWe report on a novel method for porous diamond fabrication, which is based on the synthesis of diamond-germanium composite films followed by etching of the Ge component. The composites were grown by microwave plasma assisted CVD in CH-H-GeH mixtures on (100) silicon, and microcrystalline- and single-crystal diamond substrates. The structure and the phase composition of the films before and after etching were analyzed with scanning electron microscopy and Raman spectroscopy.
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