Monovalent ions Li+, Na+, and K+, as charge compensators, are introduced into CaYA1307: M (M = Eu3+, Ce~+) in this letter. Their crystal phases and photoluminescence properties of different alkali metal ions d...Monovalent ions Li+, Na+, and K+, as charge compensators, are introduced into CaYA1307: M (M = Eu3+, Ce~+) in this letter. Their crystal phases and photoluminescence properties of different alkali metal ions doped in CaYA1307 are investigated. In addition, the influence of charge compensation ion Li+ which has a more obvious role in improving luminescence intensity on CaYA1307: Eu3+ phosphor is intentionally discussed in detail and a possible mechanism of charge compensation is given. The enhancement of red emission centered at 618 nm belonging to Eu3+ is achieved by adding alkali metal ion Li+ under 393-nm excitation.展开更多
基金supported by the National Natural Science Foundation of China(Nos.11204113,61265004,and 51272097)the Foundation of Application Research of Yunnan Province(No.2011FB022)+2 种基金the Chinese Specialized Research Fund for the Doctoral Program of Higher Education(No.20115314120001)the Postdoctoral Science Foundation of China(No.2011M501424)the Nature and Science Fund from Yunnan ProvinceMinistry of Education(No.2011C13211708)
文摘Monovalent ions Li+, Na+, and K+, as charge compensators, are introduced into CaYA1307: M (M = Eu3+, Ce~+) in this letter. Their crystal phases and photoluminescence properties of different alkali metal ions doped in CaYA1307 are investigated. In addition, the influence of charge compensation ion Li+ which has a more obvious role in improving luminescence intensity on CaYA1307: Eu3+ phosphor is intentionally discussed in detail and a possible mechanism of charge compensation is given. The enhancement of red emission centered at 618 nm belonging to Eu3+ is achieved by adding alkali metal ion Li+ under 393-nm excitation.