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P‐76: Photoluminescence Characteristics of Eu 3+ or Tb 3+ Activated Ca 4 YO(BO 3 ) 3
Author(s) -
Tian Lianhua,
Park Yong D.,
Mho SunIl,
Yeo InHyeong
Publication year - 2005
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.2036505
Subject(s) - photoluminescence , materials science , radiochemistry , chemistry , nuclear chemistry , physics , analytical chemistry (journal) , environmental chemistry , optoelectronics
Luminescence and vacuum ultraviolet (VUV) excitation properties of Ca 4 YO(BO 3 ) 3 doped with the Eu 3+ or Tb 3+ ion are investigated. In Ca 4 YO(BO 3 ) 3 : Eu 3+ , the excitation band appears strongly at 250 nm with ca. 100 nm bandwidth. The mercury discharge plasma line at 254 nm can be absorbed efficiently by Ca 4 YO(BO 3 ) 3 : Eu 3+ , and the resultant emission at ca. 611 nm makes it an excellent red phosphor for lighting applications. The Tb 3+ ion in Ca 4 YO(BO 3 ) 3 also emits efficiently green at 547 nm similar to that in oxides with UV the excitation of the allowed 4f → 5d transition.