Preparation, Growth Mechanism, Upconversion, and Near-Infrared Photoluminescence Properties of Convex-Lens-like NaYF4 Microcrystals Doped with Various Rare Earth Ions Excited at 808 nm

2018 ◽  
Vol 18 (3) ◽  
pp. 1758-1767 ◽  
Author(s):  
Yingjin Ma ◽  
Zhengwen Yang ◽  
Hailu Zhang ◽  
Jianbei Qiu ◽  
Zhiguo Song
Keyword(s):  
Rare Earth ◽  
Growth Mechanism ◽  
Near Infrared ◽  
Rare Earth Ions ◽  
Photoluminescence Properties ◽  
Convex Lens

The distribution of rare earth ions in a γ-Ga2O3 nanocrystal-silicate glass composite and its influence on the photoluminescence properties

2018 ◽  
Vol 6 (12) ◽  
pp. 2944-2950 ◽  
Author(s):  
Zhigang Gao ◽  
Xiaosong Lu ◽  
Yushi Chu ◽  
Shu Guo ◽  
Lu Liu ◽  
...  
Keyword(s):  
Rare Earth ◽  
Silicate Glass ◽  
Glass Ceramic ◽  
Glassy Phase ◽  
Rare Earth Ions ◽  
Photoluminescence Properties ◽  
Glass Composite ◽  
Surface Doping ◽  
Phase Surface

The partitioning of rare earth ions (REs: Yb3+, Er3+, Eu3+ and Nd3+) in γ-Ga2O3 nanocrystals (NCs) precipitated in a nanostructured silicate glass ceramic is revealed, and the enrichment of REs in the NCs (bulk doping) rather than on the interfaces between the NCs and the surrounding glassy phase (surface doping) is differentiated.

scholarly journals Fluoroindate glasses co-doped with Pr3+/Er3+ for near-infrared luminescence applications

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wojciech A. Pisarski ◽  
Joanna Pisarska ◽  
Marta Kuwik ◽  
Marcin Kochanowicz ◽  
Jacek Żmojda ◽  
...  
Keyword(s):  
Rare Earth ◽  
Near Infrared ◽  
Rare Earth Ions ◽  
Luminescence Spectra ◽  
Nonradiative Relaxation ◽  
Transfer Processes ◽  
Direct Excitation ◽  
Infrared Luminescence ◽  
Doped Glass ◽  
Co Doped

AbstractFluoroindate glasses co-doped with Pr3+/Er3+ ions were synthesized and their near-infrared luminescence properties have been examined under selective excitation wavelengths. For the Pr3+/Er3+ co-doped glass samples several radiative and nonradiative relaxation channels and their mechanisms are proposed under direct excitation of Pr3+ and/or Er3+. The energy transfer processes between Pr3+ and Er3+ ions in fluoroindate glasses were identified. In particular, broadband near-infrared luminescence (FWHM = 278 nm) associated to the 1G4 → 3H5 (Pr3+), 1D2 → 1G4 (Pr3+) and 4I13/2 → 4I15/2 (Er3+) transitions of rare earth ions in fluoroindate glass is successfully observed under direct excitation at 483 nm. Near-infrared luminescence spectra and their decays for glass samples co-doped with Pr3+/Er3+ are compared to the experimental results obtained for fluoroindate glasses singly doped with rare earth ions.

scholarly journals Promoting luminescence of Yb/Er codoped ferroelectric composite by polarization engineering for optoelectronic applications

Nanophotonics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 2215-2223 ◽  
Author(s):  
Er Pan ◽  
Gongxun Bai ◽  
Yutao Peng ◽  
Liang Chen ◽  
Shiqing Xu
Keyword(s):  
Rare Earth ◽  
Electric Field ◽  
Electrical Resistance ◽  
Near Infrared ◽  
Optoelectronic Devices ◽  
Glass Ceramics ◽  
Luminescent Properties ◽  
Rare Earth Ions ◽  
Luminescent Materials ◽  
Crystal Structural

AbstractFerroelectric oxide nanocrystals, in combination with the robust coupling of an electric field with crystal structure symmetry, makes such systems agreeable to field-induced crystal structural transformation. The luminescent properties of rare earth ions are sensitive to the symmetry of the surrounding crystal field. The luminescence tuning of rare earth ions is an important assignment in the research of luminescent materials. However, the current conditional feasibility and reversibility in the exploration of luminescence modification remain major challenges. In this article, the luminescence modulation of rare earth ions has been developed in Yb3+/Er3+ codoped ferroelectrics glass ceramics containing Bi4Ti3O12 nanocrystals through an electric field. The inclusion of nanocrystals in the glass matrix greatly enhances the electrical resistance. Both upconversion and near-infrared emissions of rare earth ions are effectively enhanced more than twice via polarization engineering. The electric field regulates the photonic properties of rare earth ions with excellent reversibility and nonvolatility in ferroelectrics. The effective modification by electric field provides a new scheme for optical storage and optoelectronic devices.

Near-infrared Two-wavelength-selective Response of Thermosensitive Gels Modified with Rare-earth Ions

2020 ◽  
Vol 49 (9) ◽  
pp. 1111-1113
Author(s):  
Satoshi Watanabe ◽  
Kenji Kojio ◽  
Masashi Kunitake
Keyword(s):  
Rare Earth ◽  
Near Infrared ◽  
Rare Earth Ions

Potential of Nano-Sized Rare Earth Fluorides in Optical Applications

2005 ◽  
Vol 106 ◽  
pp. 93-102 ◽  
Author(s):  
Ulrich H. Kynast ◽  
Marina M. Lezhnina ◽  
H. Kätker
Keyword(s):  
Rare Earth ◽  
Near Infrared ◽  
Vacuum Ultraviolet ◽  
Wide Band ◽  
Rare Earth Ions ◽  
Wide Band Gap ◽  
Coordination Numbers ◽  
Porous Matrices ◽  
Optical Applications ◽  
Rare Earth Fluorides

Rare earth fluorides are a class of materials with a high potential for optical applications. Fluoride lattices allow high coordination numbers for the hosted rare earth ions, but the high ionicity of the rare earth to fluorine bond leads to a wide band gap and very low vibrational energies. These two essential factors, in particular, contribute to their practicality for use in optical applications based on vacuum ultraviolet (VUV) and near infrared (NIR) excitation. The preparation and optical characteristics of rare earth fluoride nanoparticles and their embedding in polymeric, glassy or porous matrices are very promising for the eventual manufacture of transparent hybrid materials. Recent attempts to control the size of these particles down to the nano-scale and, at the same time, maintaining the performance of their macroscopic counterparts, indicate accessibility of hitherto unrealized optical properties and applications.

Rare earth ions enhanced near infrared fluorescence of Ag2S quantum dots for the detection of fluoride ions in living cells

Nanoscale ◽  
2017 ◽  
Vol 9 (37) ◽  
pp. 14031-14038 ◽  
Author(s):  
Caiping Ding ◽  
Xuanyu Cao ◽  
Cuiling Zhang ◽  
Tangrong He ◽  
Nan Hua ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Rare Earth ◽  
Near Infrared ◽  
Living Cells ◽  
Rare Earth Ions ◽  
Fluoride Ions ◽  
Near Infrared Fluorescence ◽  
Ag2s Quantum Dots

We discovered that the fluorescence of Ag2S QDs can be enhanced by rare earth ions through AIE and then developed method for F− detection based on the coordination of rare earth ions with F−.

Photoluminescence properties of Pr3+, Sm3+ and Tb3+ doped SrAlSi4N7 and energy level locations of rare-earth ions in SrAlSi4N7

2014 ◽  
Vol 2 (37) ◽  
pp. 7952-7959 ◽  
Author(s):  
Zhi-Jun Zhang ◽  
Otmar M. ten Kate ◽  
Anneke Delsing ◽  
Pieter Dorenbos ◽  
Jing-Tai Zhao ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Solid State ◽  
Energy Level ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Rare Earth Ions ◽  
Photoluminescence Properties ◽  
Reaction Method

RE3+ (RE = Pr, Sm, and Tb)-doped SrAlSi4N7 samples were synthesized by a solid-state reaction method at high temperature, and their photoluminescence properties were investigated.

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