Results 11 to 20 of about 22,469 (293)
Phosphors for lighting applications [PDF]
, 2012 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Trivalent rare earth cations (RE3+) activated nanometre-sized Y2O2S and Gd2O2S phosphors were prepared by converting hydroxycarbonate precursor powders ...
Yan, Xiao
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Annual Review of Physical Chemistry, 2023 Photochemical upconversion is a process whereby two lower-energy photons are converted into a higher-energy photon by sensitized triplet–triplet annihilation. While recent interest in this process has been motivated by improving the efficiencies of solar cells, many applications are being explored.
Jiale, Feng +3 more
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Impact of energy-transfer-upconversion on performance in quasi-three-level solid-state lasers [PDF]
, 2009 Energy-transfer-upconversion (ETU) has a detrimental impact on performance in a number of different solid-state lasers [1]. ETU manifests itself as a reduction in the effective upper laser level lifetime leading reduced energy storage and increased ...
J. W. Kim +5 more
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Upconversion in solar cells [PDF]
Nanoscale Research Letters, 2013 The possibility to tune chemical and physical properties in nanosized materials has a strong impact on a variety of technologies, including photovoltaics. One of the prominent research areas of nanomaterials for photovoltaics involves spectral conversion.
van Sark, W.G.J.H.M. +4 more
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Recharging Upconversion: Revealing Rubrene’s Replacement [PDF]
, 2022 One of the major limitations of solid-state perovskite-sensitized photon upconversion to date is that the only annihilator successfully paired with the perovskite sensitizer has been rubrene, raising the question of whether this approach of triplet ...
Colette, Sullivan, Lea, Nienhaus
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Upconversion Spectrophotofluorometry [PDF]
, 2013 As the other chapters attest, sensitivity of fluorescent molecules to their local environment has created powerful tools in the study of molecular biology, particularly in the study of protein, DNA, and lipid dynamics. Surprisingly, even events faster than the nanosecond lifetimes of fluorophores are important in protein function, and in particular ...
Arianna, Biesso +2 more
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Photochemical Upconversion in Solution: The Role of Oxygen and Magnetic Field Response [PDF]
, 2023 Upconversion processes effectively convert two or more low energy photons into one higher energy photon, and have diverse applications in photovoltaics and biomedicine. Upconversion is generally spin-selective, and its magnetic field response can be used
Roslyn, Forecast +3 more
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Bioimaging with Upconversion Nanoparticles
Advanced Photonics Research, 2022 Bioimaging enables the spatiotemporal visualization of biological processes at various scales empowered by a range of different imaging modalities and contrast agents. Upconversion nanoparticles (UCNPs) represent a distinct type of such contrast agents with the potential to transform bioimaging due to their unique optical properties and functional ...
Evan M. Mettenbrink +2 more
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Elucidating Cooperative Luminescence and Cooperative Sensitisation Upconversion of Nonanuclear Lanthanide Complexes in Solution [PDF]
, 2021 Upconversion nanoparticles have led to various breakthrough applications in solar energy conversion, imaging, and biomedicine. One key impediment is the facilitation of such processes at the molecular scale in solution where quenching effects are much ...
Loic, Charbonniere +8 more
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Metal oxides for efficient infrared to visible upconversion [PDF]
, 2011 Upconversion phosphor materials are attracting considerable attention for their possible applications in solar cells with improved efficiency, nanomaterials for bio-imaging, lasers and novel display technologies.
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