Articles with "upconversion emissions" as a keyword



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Design for Brighter Photon Upconversion Emissions via Energy Level Overlap of Lanthanide Ions.

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Published in 2018 at "ACS nano"

DOI: 10.1021/acsnano.8b04988

Abstract: The perfect energy level overlap of 2H11/2, 4S3/2, and 4F9/2 in Er3+ ions with those of 5F3, 5F4/5S2, and 5F5 in adjacently codoped Ho3+ ions allows efficient interenergy transfer. Therefore, in addition to routine activators,… read more here.

Keywords: upconversion emissions; level overlap; ho3; energy level ... See more keywords
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Temperature and rhodamine B sensing based on fluorescence intensity ratio of Er3+ upconversion emissions

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Published in 2017 at "RSC Advances"

DOI: 10.1039/c7ra09977k

Abstract: In this paper, we report the temperature and rhodamine B (RhB)-concentration sensing behavior of Ag/ZnO/Er3+:YbMoO4 composite films based on the fluorescence intensity ratio (FIR) of two green upconversion (UC) emissions which are ascribed to the… read more here.

Keywords: upconversion emissions; intensity ratio; er3; fluorescence intensity ... See more keywords
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Erbium(iii)-based metal-organic frameworks with tunable upconversion emissions.

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Published in 2018 at "Dalton transactions"

DOI: 10.1039/c8dt02329h

Abstract: A series of lanthanide-based metal-organic frameworks (Ln-MOFs) with significantly improved and tunable upconversion emissions were prepared. Y-MOFs co-doped with Yb3+/Er3+ ions have exhibited characteristic upconversion emissions at 520, 545, and 658 nm under 980 nm… read more here.

Keywords: upconversion emissions; metal organic; tunable upconversion; based metal ... See more keywords
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Exploring the intra-4f and the bright white light upconversion emissions of Gd2O3:Yb3+,Er3+-based materials for thermometry.

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Published in 2023 at "Nanoscale"

DOI: 10.1039/d3nr01764h

Abstract: Upconversion broadband white light emission driven by low-power near-infrared (NIR) lasers has been reported for many materials, but the mechanisms and effects related to this phenomenon remain unclear. Herein, we investigate the origin of laser-induced… read more here.

Keywords: light emission; intra bright; upconversion; exploring intra ... See more keywords
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Ultraviolet and Visible Upconversion Emissions in Er3+-Yb3+ Doped Titanium Dioxide Nanopowder under the 980 nm Laser Diode Excitation

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Published in 2017 at "Scientia Iranica"

DOI: 10.24200/sci.2017.4424

Abstract: Er3+-Yb3+ co-doped titanium dioxide upconversion nanoparticles were synthesized by Sol-gel method. White upconversion emissions were observed after excitation of nanoparticles with 980 nm Near-Infrared laser diode. Upconversion emissions consist of red (640-690 nm), green (520-570… read more here.

Keywords: upconversion emissions; titanium dioxide; laser diode; doped titanium ... See more keywords