A blue-emitting Gd(Nb,P)O(4): Bi(3+) phosphor for cold cathode fluorescent lamp applications

作者：Kim Jung Min^*; Han Bo Yong; Lee Hyun Ju; Yoo Jae Soo

来源：Electrochemical and Solid-State Letters, 2008, 11(11): E29-E32.

DOI：10.1149/1.2975139

A phosphor, Gd(0.99)Bi(0.01)Nb(1-x)P(x)O(4), was synthesized by substituting phosphate, PO(4)(3-), into a niobate-based GdNbO(4) host lattice. This phosphor showed dramatically improved luminance intensity in the blue region under 254 nm excitation compared to reports for GdNbO(4):Bi(3+). The band-to-band transitions of PO(4)(3-) in Gd(0.99)Bi(0.01)Nb(1-x)P(x)O(4) are believed to have a sensitizing function in the host lattice. The partial replacement of NbO(4)(3-) by PO(4)(3-) stimulates absorption in the UV region and consequently increases the quantum yield in the blue region. Furthermore, substitution of PO(4)(3-) in the phosphor improved the surface morphology of the phosphor.

• 出版日期2008