A strong green-emitting phosphor:K_3Gd(PO_4)_2:Tb~(3+) for UV-excited white light-emitting-diodes

• 作 者: 姜庭明 余雪 徐旭辉 余红岭 周大成 邱建备
• 机 构: College of Materials Science and Engineering,Kunming University of Science and Technology,Key Labora
• 出 处: Chinese Optics Letters
• 发表日期: 2014年01期
• 关键词: phosphor shortest ultraviolet likely excited adequately emissions luminescence q

K3Gd(PO4)2:Tb3+ phosphors are synthesized by the solid reaction method,and the phases and luminescence properties of the obtained phosphors are well characterized.The emission spectra of K3Gd(PO4)2:Tb3+ exhibit the typical emissions of Tb3+.Concentration quenching of Tb3+ is not observed in K3Gd(PO4)2:Tb3+,likely because the shortest average distance of Tb3+–Tb3+ in K3Gd(PO4)2:Tb3+ is adequately long such that energy transfer between Tb3+–Tb3+ ions cannot take place effectively.This result indicates that K3Tb(PO4)2 phosphors have potential application in near ultraviolet(n-UV)-convertible phosphors for white light-emitting diodes.

K3Gd (PO4) 2: Tb3 + phosphors are synthesized by the solid reaction method, and the phases and luminescence properties of the obtained phosphors are well. The emission spectra of K3Gd (PO4) 2: Tb3 + exhibit the typical emissions of Tb3 + .Concentration quenching of Tb3 + is sufficiently observed in K3Gd (PO4) 2: Tb3 +, likely because the shortest average distance of Tb3 + -Tb3 + in K3Gd (PO4) 2: Tb3 + is sufficiently long like that energy transfer between Tb3 + -Tb3 + ions can not take place effectively.This result indicates that K3Tb (PO4) 2 phosphors have potential application in near ultraviolet (n-UV) -convertible phosphors for white light-emitting diodes.