【摘要】 利用水热法合成了α-SrHPO4∶RE(RE=Eu3+,Tb3+)纳米磷光体,并研究了材料的形貌与光谱特性。α-SrHPO4纳米粒子为长度90~200 nm的棒状结构,直径为24~36 nm。Eu3+和Tb3+的掺杂均会降低α-SrHPO4的结晶度,并减小其长径比。α-Sr0.97HPO4∶0.03Eu3+在395 nm近紫外光的激发下,存在分别由5D0→7F1和5D0→7F12跃迁引起的590 nm和614 nm发射峰,最终发射橙红光。α-Sr0.97HPO4∶0.03Tb3+在217 nm近紫外光的激发下,存在由5D4→7F5跃迁引起的543 nm绿光发射。更多还原

【Abstract】 RE( RE= Eu3+or Tb3+) single-doped α-SrHPO4 phosphors with nano-scale grain were synthesized by the hydrothermal method in this work. The morphological and optical properties of these phosphors were also investigated. The sizes of the α-SrHPO4 nanorods are found in the range of 90 to 200 nm in length and 24 to 36 nm in width. The introduction of doping agent ions of Eu3 +or Tb3 +decreases both the quality of the crystallinity and the aspect ratio of the matrix. Under the excitation of near ultraviolet light( 395 nm),α-Sr 0. 97 HPO4 ∶ 0. 03Eu3 +exhibits two main emission peaks at 590 nm and 614 nm,corresponding to the5D 0 →7F J( J =1,2) transition of Eu3 +,respectively. Under the excitation of near ultraviolet light( 217 nm),α-Sr 0. 97 HPO4 ∶ 0. 03Tb3 +shows only one predominant emission peak at 543 nm originated from the5D 4 →7F 5 transition of Tb3 +. The CIE chromaticity coordinates for α-Sr 0. 97 HPO4 ∶ 0. 03Eu3 +phosphor are presented in the orange yellow region and that of α-Sr 0. 97 HPO4 ∶ 0. 03Tb3 +phosphor observed in the yellowish green region.更多还原