The Synthesis, Structure, and Luminescent Properties of TmMgB 5 O 10 Crystals.
Elena A VolkovaVictor V MaltsevAlexander M AntipinDina V DeynekoIvan V NikiforovDmitry A SpasskyEkaterina I MarchenkoDiana D MitinaVladimir L KosorukovVasiliy O YapaskurtDaniil A NaprasnikovElizaveta V KoporulinaPublished in: Materials (Basel, Switzerland) (2023)
TmMgB 5 O 10 spontaneous crystals were synthesized via the flux-growth technique from a K 2 Mo 3 O 10 -based solvent. The crystal structure of the compound was solved and refined within the space group P 2 1 / n . The first principles calculations of the electronic structure reveal that TmMg-pentaborate with an ideal not defected crystal structure is an insulator with an indirect energy band gap of approximately 6.37 eV. Differential scanning calorimetry measurements and powder X-ray diffraction studies of heat-treated solids show that TmMgB 5 O 10 is an incongruent melting compound. A characteristic band of the Tm 3+ cation corresponding to the 3 H 6 → 1 D 2 transition is observed in the photoluminescence excitation spectra of TmMg-borate. The as-obtained crystals exhibit intense blue emission with the emission peaks centered at 455, 479, 667, and 753 nm. The most intensive band corresponds to the 1 D 2 → 3 F 4 transition. TmMgB 5 O 10 solids demonstrate the thermal stability of photoluminescence.
Keyphrases
- crystal structure
- quantum dots
- light emitting
- energy transfer
- high resolution
- room temperature
- electron microscopy
- ionic liquid
- density functional theory
- molecular dynamics
- heat stress
- photodynamic therapy
- single cell
- mass spectrometry
- dna methylation
- magnetic resonance imaging
- computed tomography
- gene expression
- dual energy
- newly diagnosed
- monte carlo