Results 81 to 90 of about 3,884 (187)

Ultralow-threshold upconversion infrared vision via a microsphere-mediated directional photofield

Nature Communications
Constructing micro-/nanostructure-modulated photofields in upconversion devices to absorb low-energy photons and emit high-energy light is revolutionary for bioimaging, lasers, and photovoltaics, with proven capability to boost upconversion luminescence (
Dong Wang, Qikuan Cheng, Weibang Xia, Yongyao Tan, Kexuan Yu, Lu Zhang, Guigang Li, Rong Liu, Wei Wang, Linjuan Xu, Suli Wu, Yang Liu, Yunming Wang, Huamin Zhou   +13 more
doaj   +1 more source

Upconversion luminescence and optical thermometry behaviors of Yb³⁺ and Ho³⁺ co-doped GYTO crystal. [PDF]

Front Optoelectron, 2023
Zhang C, Ding S, Wang M, Ren H, Tang X, Zou Y, Dou R, Liu W.   +7 more
europepmc   +1 more source

Simultaneous improving luminescence intensity and stability, reduce cation vacancies of rare-earth doped CaF2 by charge self-compensation

Nano Research
Although upconversion rare-earth (RE) materials have excellent luminescence properties, the luminescence intensity and thermal stability of phosphors are not favorable due to RE doping induced vacancies.
Yuxin Liu, Zhangong Bai, Ao Xu, Guofeng Wang   +3 more
doaj   +1 more source

Advances in upconversion luminescence nanomaterial-based biosensor for virus diagnosis. [PDF]

Exploration (Beijing), 2022
Ma Y, Song M, Li L, Lao X, Wong MC, Hao J.   +5 more
europepmc   +1 more source

Influence of NaYF₄ Inert and Active Layer on Upconversion Luminescence. [PDF]

Nanomaterials (Basel), 2022
Wang Z, Lin S, Liu Y, Hou J, Xu X, Zhao X, Wei B.   +6 more
europepmc   +1 more source

Dependence of upconversion on direct luminescence decay in energy-transfer upconversion

, 2003
For several decades, energy-transfer upconversion (ETU) in rare-earth-ion doped systems [1,2] has attracted much attention, firstly, because of the fundamental interest in the physical nature of this process and, secondly, because of very practical considerations, namely the demonstration of near-infrared pumped visible light sources and, in reverse ...
Laversenne, L., Pollnau, Markus, Bigotta, S., Toncelli, A., Tonelli, M.   +4 more
openaire   +1 more source

Generalised analytical model of the transition power densities of the upconversion luminescence and quantum yield. [PDF]

Nanoscale Adv, 2023
Matias JS, Komolibus K, Kho KW, Konugolu-Venkata-Sekar S, Andersson-Engels S.   +4 more
europepmc   +1 more source

Upconversion Luminescence via Anion Exchange in Perovskite Quantum Dots for Anticounterfeiting Inkjet Printing. [PDF]

ACS Omega, 2022
Zheng X, Wen Y, Zhong J, Chen AZ.
europepmc   +1 more source

Synthesis of photocatalytic Er3+:Y3Al5O12/ZnO and Research its Photocatalytic activity

四川大学学报. 自然科学版, 2017
An upconversion luminescence agent Er3+:Y3Al5O12 mixed with the ZnO that utilizing visible light was synthesized by using sol-gel method and the hydrothermal method，and it was charactered by XRD and SEM.
DING Yong-Ping, LIU Wen-Fang, GUO Yu-Wei
doaj  

Optical Properties and Upconversion Luminescence of BaTiO₃ Xerogel Structures Doped with Erbium and Ytterbium. [PDF]

Gels, 2022
Lashkovskaya EI, Gaponenko NV, Stepikhova MV, Yablonskiy AN, Andreev BA, Zhivulko VD, Mudryi AV, Martynov IL, Chistyakov AA, Kargin NI, Labunov VA, Raichenok TF, Tikhomirov SA, Timoshenko VY.   +13 more
europepmc   +1 more source