For enhancing the emission intensity and broadening the excitation region of Ba3Eu（PO4）3 （BEP）, Sm3＋ is doped as sensitizer in this paper. BEP：Sm3＋ can produce an obvious red emission at near ultraviolet （n-UV...For enhancing the emission intensity and broadening the excitation region of Ba3Eu（PO4）3 （BEP）, Sm3＋ is doped as sensitizer in this paper. BEP：Sm3＋ can produce an obvious red emission at near ultraviolet （n-UV） radiation. An effec- tive energy transfer from Sm3＋ to Eu3＋ is proved. The commission international de I＇Eclairage （CIE） chromaticity co- ordinates of BEP：Sm3＋ locate at red region. When the environment temperature is 150 ℃, the emission intensity of BEP：0.10Sm3＋ is decreased to 76% of the initial one at room temperaatre, and the activation energy is calculated to be 0.164 eV, which can prove the good thermal stability of BEP：Sm3＋. The results indicate that BEP：Sm3＋ may have po- tential applications in white light emitting diodes （LEDs）.展开更多
基金supported by the National Natural Science Foundation of China(No.50902042)the Natural Science Foundation of Hebei Province in China(Nos.A2014201035 and E2014201037)+1 种基金the Education Office Research Foundation of Hebei Province in China(Nos.ZD2014036 and QN2014085)the College Students Innovation and Entrepreneurship of Hebei University in China(Nos.2014041 and 2015063)
文摘For enhancing the emission intensity and broadening the excitation region of Ba3Eu（PO4）3 （BEP）, Sm3＋ is doped as sensitizer in this paper. BEP：Sm3＋ can produce an obvious red emission at near ultraviolet （n-UV） radiation. An effec- tive energy transfer from Sm3＋ to Eu3＋ is proved. The commission international de I＇Eclairage （CIE） chromaticity co- ordinates of BEP：Sm3＋ locate at red region. When the environment temperature is 150 ℃, the emission intensity of BEP：0.10Sm3＋ is decreased to 76% of the initial one at room temperaatre, and the activation energy is calculated to be 0.164 eV, which can prove the good thermal stability of BEP：Sm3＋. The results indicate that BEP：Sm3＋ may have po- tential applications in white light emitting diodes （LEDs）.
