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For enhancing the emission intensity and broadening the excitation region of Ba_3Eu(PO_4)_3(BEP),Sm~(3+) is doped as sensitizer in this paper.BEP:Sm~(3+) can produce an obvious red emission at near ultraviolet(n-UV) radiation.An effective energy transfer from Sm~(3+) to Eu~(3+) is proved.The commission international de I’Eclairage(CIE) chromaticity coordinates of BEP:Sm~(3+) locate at red region.When the environment temperature is 150℃,the emission intensity of BEP:0.10Sm~(3+) is decreased to 76%of the initial one at room temperature,and the activation energy is calculated to be0.164 eV,which can prove the good thermal stability of BEP:Sm~(3+).The results indicate that BEP:Sm~(3+) may have potential applications in white light emitting diodes(LEDs).
For enhancing the emission intensity and broadening the excitation region of Ba_3Eu (PO_4) _3 (BEP), Sm ~ (3+) is doped as sensitizer in this paper.BEP: Sm ~ (3+) can produce an obvious red emission at near (3+) to Eu ~ (3+) is proved. commission international de I’Eclairage (CIE) chromaticity coordinates of BEP: Sm ~ (3+) located at red zone. At the environment temperature is 150 ° C, the emission intensity of BEP: 0.10Sm ~ (3+) is decreased to 76% of the initial one at room temperature, and the activation energy is calculated to be 0.164 eV , which can prove the good thermal stability of BEP: Sm ~ (3 +). The results indicate that BEP: Sm ~ (3+) may have potential applications in white light emitting diodes (LEDs).