Structural and luminescent properties of red-emitting Eu³⁺-doped ternary rare earth antimonates R₃SbO₇ (R = La, Gd, Y)

Abstract

Eu3+-doped antimonates show distinct luminescence spectra. 5D0 → 7F4, 5D0 → 7F1 and 5D0 → 7F0 are the dominant transitions for Eu3+-doped La3SbO7, Gd3SbO7 and Y3SbO7 respectively, due to different microstructures around the Eu3+ ions in the lattices.

A Highly Triflated Rare‐Earth Ion in [Eu(O3SCF3)8]5−

“…[17] In the presentc ase, the integratedr elative intensities of the . [18][19][20] These findings are at af irst glance in contrast to the low site symmetry of C 2 determined by X-ray structure analysis. However,ac loser look at the crystal structure shows that in fact the Eu 3 + ions are coordinated by eight oxygen ions in an early ideal squared anti-prismatic manner with respect to the distances and angles of the [EuO 8 …”

Direct observation of p,p′‐dimercaptoazobenzene produced from p‐aminothiophenol and p‐nitrothiophenol on Cu2O nanoparticles by surface‐enhanced Raman spectroscopy

“…[38] Since then, the enhanced Raman signal of adsorbed molecules on different nanostructure based on Cu 2 O material has been investigated. [39][40][41] Raman enhancement on semiconductors was currently believed to be mainly induced by chemical mechanism, [49,50] in which chargetransfer effect between molecule and substrate semiconductors was considered as the major resource for surface enhancement. For Cu 2 O substrate, the electromagnetic effect might also play a role because a weak E-field enhancement near the roughed surface was found and attributed to lightning rod effect according to earlier study.…”

“…[36,37] Recently, the usage of Cu 2 O nanomaterials as Raman active substrate was also reported and has drawn great interests. [38][39][40][41] In the present work, morphology-dependent and time-dependent SERS spectra were obtained, and the chemisorption status during measurement was investigated experimentally and theoretically through a combined study of SERS and density functional theory (DFT). Illustration of the imaginary surface status is shown in Scheme 1.…”

Synthesis and Applications of One-Dimensional Porous Nanowire Arrays: A Review

“…Moreover, Wang and Lin 83 reported the preparation of porous Cu 2 O and Cu 2 O/CuO nanowires by reactions of CuO nanowires with H 2 or H 2 /N 2 mixed plasma at room temperature. The growth mechanism of the porous Cu 2 O nanowires could be rationalized on the basis of reduction and etching of CuO, deposition of Cu 2 O nanoparticles and softening of the core part of the nanowires.…”