Abstract Series of Ca9-wCe0.5Y0.5-x-y-z(PO4)7:xTb3+, yEu3+, zSm3+, wMn2+ phosphors are synthesized by a high temperature solid state method. The spectral property and fluorescence decay curves are measured and used to demonstrate the energy transfer effect in Ce3+-Tb3+, Ce3+-Sm3+, Ce3+-Eu3+, Tb3+-Sm3+, Tb3+-Eu3+ and Tb3+-Mn2+. For Ca9Ce0.5Y0.5(PO4)7, the concentration of Ce3+ is higher and it can act as activator and sensitizer simultaneously. Ce3+ and Tb3+ can emit blue and green light under near ultraviolet excitation, respectively. Sm3+, Eu3+ and Mn2+ can produce red emission. In order to generate white light, Ce3+/Tb3+/Sm3+, Ce3+/Tb3+/Eu3+ and Ce3+/Tb3+/Mn2+ doped phosphors are investigated, and Ca8.8Ce0.5Y0.33(PO4)7:0.17Tb3+,0.20Mn2+ can create high quality white light. Its color rendering index can be high up to 80.2 and correlated color temperature is 4735 K, and its thermal stability is high. The result indicates that the acquired phosphors can be potential for the use of ultraviolet excited white light emitting diodes.

中文翻译：

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颜色可调荧光粉Ca9-Ce0.5Y0.5---(PO4)7:xTb3+, yEu3+, zSm3+, wMn2+的发光性能、能量传递和热性能

摘要 采用高温固相法合成了Ca9-wCe0.5Y0.5-xyz(PO4)7:xTb3+、yEu3+、zSm3+、wMn2+系列荧光粉。测量光谱特性和荧光衰减曲线并用于证明 Ce3+-Tb3+、Ce3+-Sm3+、Ce3+-Eu3+、Tb3+-Sm3+、Tb3+-Eu3+ 和 Tb3+-Mn2+ 中的能量转移效应。对于Ca9Ce0.5Y0.5(PO4)7，Ce3+的浓度较高，可同时作为活化剂和敏化剂。Ce3+和Tb3+在近紫外激发下分别发出蓝光和绿光。Sm3+、Eu3+ 和 Mn2+ 可产生红色发射。为了产生白光，研究了 Ce3+/Tb3+/Sm3+、Ce3+/Tb3+/Eu3+ 和 Ce3+/Tb3+/Mn2+ 掺杂的荧光粉，Ca8.8Ce0.5Y0.33(PO4)7:0.17Tb3+,0.20Mn2+ 可以产生高优质白光。其显色指数可高达80。2，相关色温为4735K，热稳定性高。结果表明，所获得的荧光粉有可能用于紫外激发的白光发光二极管。