Publications

Authors:

Guo, X.; Bettinelli, M.; Piccinelli, F.; Ruggieri, S.; Wang, Z.; Sham, T. K.

Title:

X-ray excited optical luminescence from lanthanide ions in double phosphate and double silicate crystalline hosts

Year:

2024

Type of item:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Language:

Inglese

Format:

Elettronico

Referee:

Sì

Name of journal:

Journal of Luminescence

ISSN of journal:

0022-2313

N° Volume:

269

Page numbers:

120455-120464

Keyword:

X-rays; Scintillators; Rare earth ions; Luminescence; XEOL; XANES

Short description of contents:

X-ray Excited Optical Luminescence (XEOL) from rare earth doped whitlockite phosphates and silicate garnets [Ca9La(PO4)7 and Ca9Lu(PO4)7, doped with 1 mol% Ce3+; Ca3Sc2Si3O12, doped with 0.5 mol% Pr3+, 1 mol% Eu3+ and 1 mol% Tb3+], was obtained upon X-ray excitation with a tunable synchrotron light source. Excitation at photon energies across the M5,4-edge of the dopants reveals additional information not normally obtainable with conventional UV/visible or an X-ray line source (Al K alpha). It is found that despite the low concentration, photoluminescence yields excited with photon energy at the M5,4-edge of the rare -earth dopant can positively and negatively affect the overall energy transfer to the optical center. The implication of these observations is discussed. The application of XEOL in the investigation of X-ray scintillators is illustrated.

Product ID:

139463

Handle IRIS:

11562/1126009

Last Modified:

May 9, 2024

Bibliographic citation:

Guo, X.; Bettinelli, M.; Piccinelli, F.; Ruggieri, S.; Wang, Z.; Sham, T. K., X-ray excited optical luminescence from lanthanide ions in double phosphate and double silicate crystalline hosts «Journal of Luminescence» , vol. 269 , 2024 , pp. 120455-120464

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