Results 81 to 90 of about 430,617 (369)
Upconversion and infrared emission of Er3+ /Yb3+ co-doped SiO2 -Gd2O3 obtained by sol-gel process [PDF]
Processing and Application of Ceramics, 2015 This work reports on the preparation of materials based on Yb3+ /Er3+ co-doped SiO2-Gd2O3 via sol-gel process. The 0.4 mol% of Er3+ ions was fixed and the amount of Yb3+ ions changed as 1.8, 5 and 9 mol% in order to evaluate the photoluminescence ...
Leonardo A. Rocha +4 more
doaj +1 more source
, 2018 Solution-based methods represent the most widespread approach used to deposit hybrid organic-inorganic perovskite films for low-cost but efficient solar cells.
Bongiovanni, Giovanni +6 more
core +2 more sources
Advanced Functional Materials, EarlyView.This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger +10 more
wiley +1 more source
Effective red-orange emitting CaMgPO4Cl:Sm3+ halophosphate phosphor
Results in Physics, 2016 Red-orange Sm3+ doped in CaMgPO4Cl halophosphate phosphor excited at 405 nm was prepared by combustion synthesis. The structure and properties were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescence (PL ...
P.K. Naktode, K.N. Shinde, N.S. Kokode
doaj +1 more source
Advanced Functional Materials, EarlyView.Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr +7 more
wiley +1 more source
Unravelling the role of vacancies in lead halide perovskite through electrical switching of photoluminescence [PDF]
Nature Communications, 2018 We address the behavior in which a bias voltage can be used to switch on and off the photoluminescence of a planar film of methylammonium lead triiodide perovskite (MAPbI3) semiconductor with lateral symmetric electrodes.
Cheng Li +3 more
semanticscholar +1 more source
Spektra: Jurnal Fisika dan Aplikasinya, 2018 Abstrak Telah dilakukan pencampuran nanopartikel emas dengan kuantum dot CdSe 618. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan nanopartikel emas terhadap intensitas emisi dan waktu peluruhan fotoluminesensi kuantum dot CdSe ...
Muhammad Lawrence Pattersons +1 more
doaj +1 more source
New Journal of Physics, 2020 By using localization techniques, we demonstrated that the morphology of a 2D material in three dimensions can be optically obtained with nanometer precision in z -axis.
En-Xiang Chen +8 more
doaj +1 more source
Spectroscopic Signatures for the Dark Bose-Einstein Condensation of Spatially Indirect Excitons
, 2017 We study semiconductor excitons confined in an electrostatic trap of a GaAs bilayer heterostructure. We evidence that optically bright excitonic states are strongly depleted while cooling to sub-Kelvin temperatures.
Alloing, Mathieu +6 more
core +1 more source
Double Helical Plasmonic Antennas
Advanced Functional Materials, EarlyView.Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin +7 more
wiley +1 more source