Publications by authors named "Mkhitar Hobosyan"
Article Synopsis
- The paper combines density functional theory (DFT) and experimental methods to study the properties of undoped and Er-doped lithium tantalate (LiTaO:Er) as fluorescent probes.
- DFT calculations include electronic and optical properties, with specific attention to the effects of Er doping at 4.167 mol. %, using both generalized gradient approximation and hybrid functional methods for accuracy.
- Experimental techniques like X-ray diffraction, Scanning Electron Microscopy, and photoluminescence confirm the synthesis and properties of LiTaO:Er nanoparticles, highlighting strong emissions in visible and near-infrared areas, closely aligning with theoretical predictions.
The specific energy of the existing lithium ion battery cells is limited because intercalation electrodes made of activated carbon (AC) materials have limited lithium ion storage capacities. Carbon nanotubes, graphene, and carbon nanofibers are the most sought alternatives to replace AC materials but their synthesis cost makes them highly prohibitive. Silicon has recently emerged as a strong candidate to replace existing graphite anodes due to its inherently large specific capacity and low working potential.
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