Effects of inert shell on the upconversion intensity and color of Na(Er/Yb)F4 nanocrystals
AIP Advances, 2021 Inert passivation can significantly enhance the upconversion intensity of lanthanide ion doped nanocrystals, especially in the heavily doped cases. In this paper, we revealed that, besides the well-known enhancement of intensity, the inert shell can also
Ziwen Zhou +7 more
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Efficient oxide phosphors for light upconversion; green emission from Yb3+ and Ho3+ co-doped Ln(2)BaZnO(5) (Ln = Y, Gd) [PDF]
, 2011 This is the author's accepted version of the article.
Berard, M +6 more
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Multi-Color Luminescence Transition of Upconversion Nanocrystals via Crystal Phase Control with SiO2 for High Temperature Thermal Labels [PDF]
, 2020 Upconversion nanocrystals (UCNs)-embedded microarchitectures with luminescence color transition capability and enhanced luminescence intensity under extreme conditions are suitable for developing a robust labeling system in a high-temperature thermal ...
Baek, Dahye +8 more
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Angewandte Chemie International Edition, 2019 AbstractThe many applications of photon upconversion—conversion of low‐energy photons into high‐energy photons—raises the question of the possibility of “electron upconversion”. In this Review, we illustrate how the reduction potential can be increased by using the free energy of exergonic chemical reactions.
Mikhail A. Syroeshkin +5 more
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Upconversion Nanoparticle‐Assisted Photopolymerization [PDF]
Photochemistry and Photobiology, 2020 Abstract Near‐infrared (NIR) laser has deeper penetration and lower thermal effect compared with ultraviolet–visible (UV/vis) laser. NIR laser can stimulate upconversion nanoparticles (UCNPs) to emit UV/vis light efficiently. Therefore, the UCNPs become an important kind of materials to produce upconversion luminescence through NIR laser.
Ke Wang, Jhair Peña, Jinfeng Xing
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Particle detection through the quantum counter concept in YAG:Er$^{3+}$ [PDF]
, 2015 We report about a novel scheme for particle detection based on the infrared quantum counter concept. Its operation consists of a two-step excitation process of a four level system, that can be realized in rare earth-doped crystals when a cw pump laser is
A. Di Lieto +11 more
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Sub-20 nm Core-Shell-Shell Nanoparticles for Bright Upconversion and Enhanced Förster Resonant Energy Transfer. [PDF]
, 2019 Upconverting nanoparticles provide valuable benefits as optical probes for bioimaging and Förster resonant energy transfer (FRET) due to their high signal-to-noise ratio, photostability, and biocompatibility; yet, making nanoparticles small yields a ...
Alivisatos, A Paul +9 more
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Scientific Reports, 2018 The multiplexing capacity of conventional fluorescence materials are significantly limited by spectral overlap and background interference, mainly due to their short-lived fluorescence lifetimes.
Heng Qin +5 more
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Intrinsic 1/f device noise reduction and its effect on phase noise in CMOS ring oscillators [PDF]
, 1999 This paper gives experimental proof of an intriguing physical effect: periodic on-off switching of MOS transistors in a CMOS ring oscillator reduces their intrinsic 1/f noise and hence the oscillator's close-in phase noise. More specifically, it is shown
Gierkink, Sander L.J. +6 more
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The route toward a diode-pumped 1-W erbium 3-µm fiber laser [PDF]
, 1997 A rate-equation analysis of the erbium 3-um ZBLAN fiber laser is performed. The computer calculation includes the longitudinal spatial resolution of the host material.
Pollnau, Markus
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