Luminescence and VUV excitation characteristics of Eu3+_ or Tb3+_ activated Ca4YO(BO3)(3)

Authors
Tian, LHMho, SYu, BYPark, HL
Issue Date
2005-12
Publisher
KOREAN PHYSICAL SOC
Citation
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.47, no.6, pp.1070 - 1073
Abstract
The luminescence and the vacuum ultraviolet (VUV) excitation properties of Ca4YO(BO3)(3) doped with Eu3+ or Tb3+ ions are investigated. In Ca4YO(BO3)(3):Eu3+, the excitation band appears strongly at 250 nm with ca. a 100 nm bandwidth, and the resultant emission has a red peak at ca. 611 nm. The Tb3+ ion in Ca4YO(BO3)(3) also emits efficiently in the green at 547 nm with the UV excitation of the allowed 4f -> 5d transition centered at 230 nm with ca. a 50 nm bandwidth. The mercury discharge plasma line at 254 nm can be efficiently absorbed by both Ca4YO(BO3)(3):Eu3+ and Ca4YO(BO3)(3):Tb3+, which makes them excellent phosphors for lighting applications.
Keywords
VACUUM-ULTRAVIOLET EXCITATION; FLUORESCENT LAMPS; EU3+; PHOSPHORS; TB3+; VACUUM-ULTRAVIOLET EXCITATION; FLUORESCENT LAMPS; EU3+; PHOSPHORS; TB3+; VUV excetation; photoluminescence; lamp phosphor; oxyborate
ISSN
0374-4884
URI
https://pubs.kist.re.kr/handle/201004/135948
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KIST Article > 2005
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