Results 91 to 100 of about 7,192 (202)

Geometry modulated upconversion photoluminescence of individual NaYF4: Yb3+, Er3+ microcrystals

AIP Advances, 2017
Upconversion (UC) photoluminescence (PL) properties of individual β-NaYF4: Yb3+, Er3+ microcrystals are investigated on their crystal orientation and size by a confocal micro-photoluminescence (μ-PL) system.
Bing Wang, Jiao Wang, Yongfeng Mei
doaj   +1 more source

(La0.97RE0.01Yb0.02)2O2S Nanophosphors Converted from Layered Hydroxyl Sulfate and Investigation of Upconversion Photoluminescence (RE=Ho, Er)

Nanoscale Research Letters, 2017
Phase-pure (La0.97RE0.01Yb0.02)2O2S upconversion (UC) nanophosphors (average crystallite size ~ 45 nm; RE=Ho, Er) were annealed from their hydrothermally crystallized layered hydroxyl sulfate precursors in flowing hydrogen at 1200 °C for 1 h, with water ...
Ji-Guang Li, Xuejiao Wang, Weigang Liu, Qi Zhu, Xiaodong Li, Xudong Sun   +5 more
doaj   +1 more source

Synthesis and Characterization of Highly Fluorescent Multi-Coloured Upconversion Nanomaterials [PDF]

, 2015
The current research project work essentially deals with the synthesis of highly bright fluorescent nanoparticles which have the ability to emit wavelength shorter than that of the pumped wavelength.
Singh, Adhish
core  

Triplet–triplet annihilation upconversion based photoluminescence temperature sensing

JPhys Materials
Triplet–triplet annihilation upconversion (TTA-UC) is an anti-Stokes photoluminescence process that converts low-energy photons into higher-energy emissions, offering significant potential for applications ranging from solar energy harvesting to ...
Shuwei Sun, Chaoyan Ma, Donglin He, Yongmei Gao, Pengjun Zhao, Aimin Chang, Yixiong Ji, Wei Luo, Can Gao, Bolong Zhang   +9 more
doaj   +1 more source

Observation of quantum depletion in a nonequilibrium exciton-polariton condensate

, 2019
The property of superfluidity, first discovered in liquid 4He, is closely related to Bose-Einstein condensation (BEC) of interacting bosons. However, even at zero temperature, when one would expect the whole bosonic quantum liquid to become condensed, a ...
Bleu, Olivier, Boozarjmehr, Maryam, Estrecho, Eliezer, Levinsen, Jesper, Ostrovskaya, Elena A., Parish, Meera M., Pfeiffer, Loren N., Pieczarka, Maciej, Snoke, David W., Steger, Mark, Truscott, Andrew G., West, Kenneth   +11 more
core   +1 more source

Energy Transfer from Pr³⁺ to Gd³⁺ and Upconversion Photoluminescence Properties of Y₇O₆F₉:Pr³⁺, Gd³. [PDF]

Materials (Basel), 2022
Sun Y, Wang Y, Hu C, Zhou X, Hao J, Li W, Li H.   +6 more
europepmc   +1 more source

Compósitos luminescentes baseados em celulose bacteriana e lantanídeos [PDF]

, 2013
Mestrado em QuímicaThe development of innovative bio-based materials has gained considerable attention during the last decades because of the increasing society awareness regarding environmental issues and sustainable development.
Perez de Albeniz, Naia Gandiaga
core  

NIR-II Upconversion Photoluminescence of Er³⁺ Doped LiYF₄ and NaY(Gd)F₄ Core-Shell Nanoparticles. [PDF]

Front Chem, 2021
Feng Q, Zheng W, Pu J, Chen Q, Shao W.
europepmc   +1 more source

Upconversion photoluminescence of monolayer WSe₂ with biaxial strain tuning

Optics Express
Mechanical strain can be used to tune the optical properties of monolayer transition metal dichalcogenides (1L-TMDs). Here, upconversion photoluminescence (UPL) from 1L-WSe2 flakes is tuned with biaxial strain induced by cruciform bending and indentation method.
Shrawan, Roy, Jie, Gao, Xiaodong, Yang
openaire   +2 more sources

The Influence of a Continuum Background on Carrier Relaxation in InAs/InGaAs Quantum Dot

Nanoscale Research Letters, 2007
We have investigated the ultra-fast carrier dynamics in Molecular Beam Epitaxy (MBE)-grown InAs/InGaAs/GaAs quantum dots (QDs) emitting at 1.3 μm by time resolved photoluminescence (TRPL) upconversion measurements with a time resolution of about 200
Visimberga Giuseppe, Rainò Gabriele, Salhi Abdelmajid, Todaro Maria, De Vittorio Massimo, Passaseo Adriana, Cingolani Roberto, De Giorgi Milena   +7 more
doaj   +1 more source