About this Materials Science article
Single-Crystal Terbium Silicate Chloride Core–Shell Nanowires and Nanotubes for Monolithically Integrated Optoelectronics by Jinyou Xu; Wei Zhou is a Materials Science article available to read on EtoBox.
The density of doped rare-earth (RE) ions in most host materials is often too low to support sufficient optical gain for monolithically integrated optoelectronics, limited by the inevitable precipitation of RE ions at high density. This challenge can potentially be overcome with RE-containing single crystals. In this work, a monocrystalline terbium silicate chloride in the form of core-shell and tubular nanostructures is synthesized by one-step chemical vapor deposition. The Rietveld refinement analysis of Xray diffraction shows that this single crystal has the formula Tb 3 (SiO 4 ) 2 Cl and belongs to the orthorhombic Pnma space group with unit cell parameters a = 6.858 Å, b = 17.737 Å, c = 6.179 Å, and α = β = γ = 90°and a unit cell volume 7.54 nm 3 . To the best of our knowledge, single-crystal Tb 3 (SiO 4 ) 2 Cl is a RE silicate that has never been reported before. Compared to Tb-doped materials, Tb 3 (SiO 4 ) 2 Cl has the advantages of single crystal, higher Tb 3+ density (1.6 × 10 22 cm -3 ), and chemical/thermal stability (950 °C). Upon illumination, Tb 3 (SiO 4 ) 2 Cl emits a strong characteristic green light with crystal-field-induced splitting and no concentration-and tem
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- Author
- Jinyou Xu; Wei Zhou
- Publisher
- American Chemical Society (ACS)
- Published
- 2023
- Language
- EN
- Field
- Materials Science (Physical Sciences)