Reverse microemulsion synthesis of mixed α and β phase NaYF4:Yb,Er nanoparticles: calcination induced phase formation, morphology, and upconversion emission
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Sol-Gel Science and Technology"
DOI: 10.1007/s10971-020-05340-w
Abstract: A novel “water-in-oil” type reverse microemulsion assisted synthesis detail on the formation of mixed cubic and hexagonal (α + β) phase NaYF4:Yb,Er nanoparticles and their upconversion emission properties are presented. The effect of surfactants, fluorine precursors on… read more here.
Keywords: phase; nayf4 nanoparticles; upconversion emission; phase nayf4 ... See more keywords
Correlation between the crystal structure and upconversion emission of Ho3+ in AHfO3 (A = Ca, Sr, and Ba)
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the Korean Physical Society"
DOI: 10.1007/s40042-020-00040-8
Abstract: We investigated the substitution-site dependence of the emission properties of the Ho3+ and the Yb3+ co-doped AHfO3 (A = Ca, Sr, and Ba) perovskite series using ultraviolet (UV) and near-infrared (NIR) photoexcitation. We measured the X-ray diffraction… read more here.
Keywords: ho3; site; emission; upconversion emission ... See more keywords
Manipulating upconversion emission of cubic BaGdF5:Ce3+/Er3+/Yb3+ nanocrystals through controlling Ce3+ doping
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2017.05.320
Abstract: Abstract Low-temperature molten-salt method and the NH 4 NO 3 flux were developed to synthesize quasi-spherical cubic BaGdF 5 :Ce 3+ /Er 3+ /Yb 3+ nanocrystals with the average diameter of 30 nm. The optimum doping… read more here.
Keywords: ce3; upconversion emission; emission cubic; manipulating upconversion ... See more keywords
Enhanced red upconversion emission of Ho3+ in NaYF4 nanocrystals
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2018.06.009
Abstract: Abstract Hexagonal-phase NaYF 4 :Yb 3+ /Ho 3+ nanocrystals (with size of 20 nm) were successfully prepared by a modified solution-based method. Under 980 nm near- infrared (NIR) excitation, the upconversion (UC) emission was tuned from green… read more here.
Keywords: shell; emission intensity; upconversion emission; emission ... See more keywords
Single-band near-infrared upconversion emission and visible-light absorption in highly doped pseudo-perovskite oxides
Sign Up to like & getrecommendations! Published in 2020 at "Solar Energy Materials and Solar Cells"
DOI: 10.1016/j.solmat.2019.110253
Abstract: Abstract Currently, concentration-induced near-infrared upconversion quenching at highly doped levels of lanthanide ions poses a significant constraint for their practical applications. In this work, the fabricated Tm3+/Yb3+ codoped Na0.5Bi2.5Nb2O9 (NBN) materials with a layered structure… read more here.
Keywords: highly doped; infrared upconversion; near infrared; upconversion emission ... See more keywords
Color-Tunable Upconversion-Emission Switch Based on Cocrystal-to-Cocrystal Transformation.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c11425
Abstract: Cocrystal engineering, involving the assembly of two or more components into a highly ordered solid-state superstructure, has emerged as a popular strategy for tuning the photophysical properties of crystalline materials. The reversible co-assembly and disassembly… read more here.
Keywords: color; color tunable; emission switch; upconversion emission ... See more keywords
Tuning hexagonal NaYbF4 nanocrystals down to sub-10 nm for enhanced photon upconversion.
Sign Up to like & getrecommendations! Published in 2017 at "Nanoscale"
DOI: 10.1039/c7nr04877g
Abstract: Enhancing upconversion emission is critical for small-sized lanthanide doped upconversion nanocrystals. A promising way is increasing the doping concentration of excitation energy absorbers, the Yb3+ sensitizer. However, it is still a challenge to obtain small-sized… read more here.
Keywords: upconversion nanocrystals; upconversion emission; naybf4 nanocrystals; hexagonal naybf4 ... See more keywords
Color-tunable upconversion emission from a twisted intramolecular charge-transfer state of anthracene dimers via triplet–triplet annihilation
Sign Up to like & getrecommendations! Published in 2019 at "Materials Horizons"
DOI: 10.1039/c8mh01586d
Abstract: Color-tunable upconversion emission based on triplet–triplet annihilation was achieved for the first time in two anthracene dimers with twisted intramolecular charge-transfer states. read more here.
Keywords: triplet triplet; tunable upconversion; triplet annihilation; triplet ... See more keywords
Synthesis and upconversion emission studies of CaYF5:Ho3+/Yb3+ phosphor and its applications in optical thermometry, fingerprint detection, and security ink
Sign Up to like & getrecommendations! Published in 2023 at "RSC Advances"
DOI: 10.1039/d3ra00644a
Abstract: In this work, a CaYF5:Ho3+/Yb3+ upconversion phosphor was synthesized and its structural, morphological, and optical properties were studied. The upconversion emission study was performed at an excitation pump power density of 5 W cm−2 and… read more here.
Keywords: upconversion emission; phosphor; ho3 yb3; cayf5 ho3 ... See more keywords