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Title: Luminescent properties of blue phosphor Ba₂CaB₆O₁₂:Eu²⁺ under vacuum-ultraviolet and ultraviolet excitation
Authors: Hu, Yucai
Yin, Ping
Cheng, Huirong
Yu, Huidi
Xu, Hui
Liu, Hong
Li, Jian
Issue Date: Mar-2007
Publisher: CSIR
IPC Code: Int. Cl. ⁸ C09K11/00; G01N21/64
Abstract: The luminescence of Eu²⁺ in Ba₂CaB₆O₁₂ has been investigated under vacuum ultraviolet and ultraviolet excitation. Two different crystallographic sites are available for Eu2+ in Ba₂CaB₆O₁₂. In this structure, there are linear rows of three cations in the order of Ba²⁺, Ca²⁺ and Ba²⁺, Ca²⁺ being in the central position. The emission spectra of Eu²⁺ under vacuum ultraviolet and ultraviolet consist of two broad bands peaking at 445 and 465 nm, which are associated with the fd transitions of Eu²⁺ in the sites of Ba²⁺ and Ca²⁺, respectively. Two weak peaks in vacuum ultraviolet range are observed at 160 nm and 200 nm.
Page(s): 428-431
ISSN: 0376-4710
Appears in Collections:IJC-A Vol.46A(03) [March 2007]

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