Tunable Emission Properties of CaTiSiO5:Ce3+, Mn2+ Phosphor via Efficient Energy Transfer

Cao, Renping; Jiao, Yuming; Wang, Xuantian; Ouyang, Xun; Chen, Ting; Wan, Huijun; Fan, Ting; Xie, Shuai

doi:10.1007/s11664-020-08100-2

Cited by 11 publications

(1 citation statement)

References 39 publications

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“…The absorptions corresponding to this luminescence are only the bands near or in the shallow UV, with the colorful pleochroic bands at higher wavelengths yielding no luminescence. It is likely that octahedral Mn 2+ is responsible, due to the weak nature of the absorptions along with the orange-red luminescence often seen in oxides [14][15][16][17]. Mn 3+ typically does not luminesce, as heavily Jahn-Teller distorted species tend to have sufficient non-radiative pathways for relaxation [12].…”

Section: Pleochroism In Doped β-Ga2o3mentioning

confidence: 99%

Polarization and orientation dependent optical properties in Czochralski-grown transition metal doped β-Ga2O3

Dutton

Remple

Jesenovec³

et al. 2023

Oxide-Based Materials and Devices XIV

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Properties of monoclinic β-Ga2O3 are strongly dependent upon orientation. In the case of optical properties, polarization can reveal differences in optical bandgap and absorptions related to transition metal ions. This phenomenon is known as pleochroism and has been extensively studied in minerology. β-Ga2O3 bulk single crystals doped with Zn, Mn, Cr, or Cu were grown by the Czochralski and vertical gradient freeze methods. Ultraviolet-visible-near infrared spectroscopy and photoluminescence (PL) revealed polarization- and orientation-dependent optical absorptions in β-Ga2O3. Crystals were annealed in reducing and oxidizing environments in an attempt to alter the intensities of absorptions characteristic to the different transition metal oxidation states in a given ligand field. Visible pleochroism was strongest in (001) oriented Mndoped samples as shown by polarized optical microscopy. All samples were electrically insulating, indicative of acceptor doping, aside from Cr-doped samples where Cr acts as a deep donor.

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