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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.46A [2007] >
IJC-A Vol.46A(03) [March 2007] >
| 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 fd 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 |
| Source: | IJC-A Vol.46A(03) [March 2007]
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