Open AccessSynthesis and luminescenct properties of LaPO4：Dy phosphors with different morphology
Author(s) -
Chunfang Wu,
Meng Xie,
Jie Li,
Yuhua Wang
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.6518
Subject(s) - phosphor , materials science , luminescence , ion , excited state , hydrothermal circulation , excitation , ultraviolet , analytical chemistry (journal) , chemical engineering , optoelectronics , atomic physics , chemistry , physics , engineering , organic chemistry , quantum mechanics , chromatography
LaPO4Dy phosphors with different morphology were prepared by adjusting phosphorus sources and reagent in hydrothermal reaction and their vacuum ultraviolet excited luminescence were investigated. The results show that the luminescent intensity of LaPO4Dy phosphor varies for different morphologies and different particle size. The site symmetry of Dy3+ ions in the LaPO4Dy phosphor with three different morphologies was consistent and the ratio of yellow emission to blue emission of the three phosphors was kept in 1 to 1.5. From the comparison of the excitation spectra of LaPO4Dy and GdPO4Eu it could been seen that the energy transfer efficiency from phosphate host to Dy3+ ion is lower than that to Eu3+ ion. Meanwhile stronger f-d transition was observed in the excitation spectra.