Heavy Mn2+-doped near-infrared photon upconversion luminescence in fluoride RbZnF3:Yb3+,Mn2+ guided by dopant distribution simulation

2020 ◽  
Vol 8 (35) ◽  
pp. 12164-12172
Author(s):  
Xinxin Han ◽  
Enhai Song ◽  
Shuai Zhang ◽  
Shi Ye ◽  
Xiao-Bao Yang ◽  
...  
Keyword(s):  
Near Infrared ◽  
Upconversion Luminescence ◽  
Dopant Distribution ◽  
Infrared Photon

NIR UC emission was observed in heavy Mn2+-doped RbZnF3:Yb3+,Mn2+ designed by the dopant-distribution prediction simulation. The GSA/ESA and GSA/ETU models of the super-exchange-coupled Yb3+–Mn2+–Mn2+ trimer are proposed for the NIR UC emission.

Near-infrared photon-excited energy transfer in platinum(ii)-based supramolecular polymers assisted by upconverting nanoparticles

2021 ◽  
Vol 57 (15) ◽  
pp. 1927-1930
Author(s):  
Zhao Gao ◽  
Lulu Shi ◽  
Xiao Ling ◽  
Ze Chen ◽  
Qingsong Mei ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Supramolecular Polymers ◽  
Upconversion Nanoparticles ◽  
Supramolecular System ◽  
Infrared Photon

A hybrid supramolecular system with near-infrared photon-excited energy transfer has been successfully constructed, relying on the assistance of upconversion nanoparticles in platinum(ii)-based supramolecular polymers.

scholarly journals Nano-Crystallization of Ln-Fluoride Crystals in Glass-Ceramics via Inducing of Yb3+ for Efficient Near-Infrared Upconversion Luminescence of Tm3+

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1033
Author(s):  
Jianfeng Li ◽  
Yi Long ◽  
Qichao Zhao ◽  
Shupei Zheng ◽  
Zaijin Fang ◽  
...  
Keyword(s):  
Crystal Structures ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Glass Ceramics ◽  
Upconversion Emission ◽  
Ceramic Composites ◽  
Wide Range ◽  
Transmission Window ◽  
Optical Applications ◽  
Upconversion Emissions

Transparent glass-ceramic composites embedded with Ln-fluoride nanocrystals are prepared in this work to enhance the upconversion luminescence of Tm3+. The crystalline phases, microstructures, and photoluminescence properties of samples are carefully investigated. KYb3F10 nanocrystals are proved to controllably precipitate in the glass-ceramics via the inducing of Yb3+ when the doping concentration varies from 0.5 to 1.5 mol%. Pure near-infrared upconversion emissions are observed and the emission intensities are enhanced in the glass-ceramics as compared to in the precursor glass due to the incorporation of Tm3+ into the KYb3F10 crystal structures via substitutions for Yb3+. Furthermore, KYb2F7 crystals are also nano-crystallized in the glass-ceramics when the Yb3+ concentration exceeds 2.0 mol%. The upconversion emission intensity of Tm3+ is further enhanced by seven times as Tm3+ enters the lattice sites of pure KYb2F7 nanocrystals. The designed glass ceramics provide efficient gain materials for optical applications in the biological transmission window. Moreover, the controllable nano-crystallization strategy induced by Yb3+ opens a new way for engineering a wide range of functional nanomaterials with effective incorporation of Ln3+ ions into fluoride crystal structures.

scholarly journals Upconversion Luminescence of Silica–Calcia Nanoparticles Co-doped with Tm3+ and Yb3+ Ions

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 937
Author(s):  
Katarzyna Halubek-Gluchowska ◽  
Damian Szymański ◽  
Thi Ngoc Lam Tran ◽  
Maurizio Ferrari ◽  
Anna Lukowiak
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Upconversion Luminescence ◽  
Sol Gel ◽  
Emission Spectra ◽  
Transmission Electron ◽  
Characteristic Emission ◽  
Diffraction Patterns ◽  
Size Of Particles ◽  
Average Size

Looking for upconverting biocompatible nanoparticles, we have prepared by the sol–gel method, silica–calcia glass nanopowders doped with different concentration of Tm3+ and Yb3+ ions (Tm3+ from 0.15 mol% up to 0.5 mol% and Yb3+ from 1 mol% up to 4 mol%) and characterized their structure, morphology, and optical properties. X-ray diffraction patterns indicated an amorphous phase of the silica-based glass with partial crystallization of samples with a higher content of lanthanides ions. Transmission electron microscopy images showed that the average size of particles decreased with increasing lanthanides content. The upconversion (UC) emission spectra and fluorescence lifetimes were registered under near infrared excitation (980 nm) at room temperature to study the energy transfer between Yb3+ and Tm3+ at various active ions concentrations. Characteristic emission bands of Tm3+ ions in the range of 350 nm to 850 nm were observed. To understand the mechanism of Yb3+–Tm3+ UC energy transfer in the SiO2–CaO powders, the kinetics of luminescence decays were studied.

Near-infrared photon upconversion devices based on GaNAsSb active layer lattice matched to GaAs

2009 ◽  
Vol 94 (9) ◽  
pp. 093504 ◽  
Author(s):  
Y. Yang ◽  
W. Z. Shen ◽  
H. C. Liu ◽  
S. R. Laframboise ◽  
S. Wicaksono ◽  
...  
Keyword(s):  
Active Layer ◽  
Near Infrared ◽  
Infrared Photon ◽  
Lattice Matched

Visible upconversion luminescence of Tb3+ ions in Y2O3 nanoparticles induced by a near-infrared femtosecond laser

2010 ◽  
Vol 496 (1-2) ◽  
pp. 488-493 ◽  
Author(s):  
Qiang Lü ◽  
Yingjun Wu ◽  
Lurong Ding ◽  
Guomei Zu ◽  
Aihua Li ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Near Infrared ◽  
Upconversion Luminescence

scholarly journals VISUALIZATION OF Nd3+-DOPED LaF3 NANOPARTICLES FOR NEAR INFRARED BIOIMAGING VIA UPCONVERSION LUMINESCENCE AT MULTIPHOTON EXCITATION MICROSCOPY

2018 ◽  
Vol 7 (1) ◽  
pp. 4-12 ◽  
Author(s):  
A. V. Ryabova ◽  
K. Keevend ◽  
E. Tsolaki ◽  
S. Bertazzo ◽  
D. V. Pominova ◽  
...  
Keyword(s):  
Near Infrared ◽  
Upconversion Luminescence ◽  
Multiphoton Excitation

Near-infrared photon propagation in complex knee by Monte-Carlo modeling

2014 ◽  
Vol 12 (s2) ◽  
pp. S21701-321704 ◽  
Author(s):  
Yanping Chen Yanping Chen ◽  
Xiong Ma Xiong Ma ◽  
Xiaoling Wang Xiaoling Wang ◽  
Shaojie Wang Shaojie Wang
Keyword(s):  
Monte Carlo ◽  
Near Infrared ◽  
Monte Carlo Modeling ◽  
Photon Propagation ◽  
Infrared Photon
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