Up-conversion emission phosphors based on doped silica glass ceramics prepared by sol–gel methods: control of silica glass ceramics containing anatase and rutile crystallites

Newport, A.; Fern, George R.; Ireland, Terry G.; Withnall, Robert; Silver, Jack; Vecht, A.

doi:10.1039/b009086g

Cited by 22 publications

(13 citation statements)

References 15 publications

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“…It was already reported that the excited-state dynamics are dependent on energy migration between the active ions, the statistical distribution of the active ions, and the site symmetry of the active ions in the host matrix. [41][42][43] With a suitable selection of the host matrix and the rare-earthdopant concentration, the UC efficiency of a material can be enhanced appreciably.…”

Section: Introductionmentioning

confidence: 99%

Lanthanide‐Doped Nanocrystals: Strategies for Improving the Efficiency of Upconversion Emission and Their Physical Understanding

2014

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The fundamental understanding of lanthanide-doped upconverted nanocrystals remains a frontier area of research because of potential applications in photonics and biophotonics. Recent studies have revealed that upconversion luminescence dynamics depend on host crystal structure, size of the nanocrystals, dopant concentration, and core-shell structures, which influence site symmetry and the distribution and energy migration of the dopant ions. In this review, we bring to light the influences of doping/co-doping concentration, crystal phase, crystal size of the host, and core-shell structure on the efficiency of upconversion emission. Furthermore, the lattice strain, due to a change in the crystal phase and by the core-shell structure, strongly influences the upconversion emission intensity. Analysis suggests that the local environment of the ion plays the most significant role in modification of radiative and nonradiative relaxation mechanisms of overall upconversion emission properties. Finally, an outlook on the prospects of this research field is given.

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Section: Introductionmentioning

confidence: 99%

Lanthanide‐Doped Nanocrystals: Strategies for Improving the Efficiency of Upconversion Emission and Their Physical Understanding

2014

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“…Assuming two near IR photons per emitted visible photon would indicate theoretical conversion efficiency gains of 35%. Up-conversion of near IR and IR is possible using such materials as the element Erbium and Yttrium doped silica-based ceramics [6]. Importantly, even an all near IR up-converter can be a useful for visible light scattering when embedded in a matrix of differing refractive index.…”

Section: Spectral Up-conversion Considerationsmentioning

confidence: 99%

Substrate engineering for high efficiency thin film solar cells

Mawyin

Chawda

Halada

et al. 2008

Journal of Non-Crystalline Solids

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“…Light of 780 nm (15 mW) from a laser diode (RENISHAW) was used as an excitation source. The Raman spectrometer has been reported to be useful for measuring visible fluorescence caused by electronic transitions of rare earth ions [14,15].…”

Section: Characterization Of Samplesmentioning

confidence: 99%

Preparation and optical properties of sol–gel derived Er3+-doped Al2O3–Ta2O5 films

et al. 2005

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Up-conversion emission phosphors based on doped silica glass ceramics prepared by sol–gel methods: control of silica glass ceramics containing anatase and rutile crystallites

Cited by 22 publications

References 15 publications

Lanthanide‐Doped Nanocrystals: Strategies for Improving the Efficiency of Upconversion Emission and Their Physical Understanding

Lanthanide‐Doped Nanocrystals: Strategies for Improving the Efficiency of Upconversion Emission and Their Physical Understanding

Substrate engineering for high efficiency thin film solar cells

Preparation and optical properties of sol–gel derived Er3+-doped Al2O3–Ta2O5 films

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