提出一种合成LaAlO3的新方法，该方法操作简单、成本低、无污染。将化学计量比的反应物La(OH)3/La2O3和Al(OH)3放入反应釜中，于220 ℃温度下水热活化处理,快速加热至900 ℃反应即可得到LaAlO3。XRD结果表明，所合成的LaAlO3为三方晶系。 PL结果表明，所合成的LaAlO3∶Eu3+的主要发射为Eu3+的 5D0→7F1磁偶极跃迁发射和5D0→7F2电偶极跃迁发射，红橙比随着Eu3+离子掺杂量的增加而变大。在VUV-UV激发光谱中，LaAlO3∶Eu3+位于VUV光谱区的基质吸收很弱，而位于~315 nm的O2--Eu3+的电荷迁移跃迁带(CT)则较强。

A facile, environmentally friendly, low cost method was employed to synthesize perovskite-type LaAlO3 powders. The stoichiometric mixtures of La(OH)3/La2O3, and Al(OH)3 were activated by a hydrothermal treatment in teflon-lined stainless steel autoclave at 220 ℃ for 3 d, and then the precursors were quickly heated to 900 ℃ and reacted for 5 h to obtain LaAlO3. The obtained samples were characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. XRD result shows that LaAlO3 crystal structure belongs to the rhombohedral system with the space group of R 3c (No.167). PL results indicate the main emissions of LaAlO3∶Eu3+ come from the magnetic dipole-dipole 5D0→7F1 transition and the electric dipole-dipole 5D0→7F2 transition. The ratio value of the intensity of Eu3+:5D0→7F2 transition to the intensity of Eu3+:5D0→7F1 transition increases with the increase of Eu3+ concentration. Host absorption of LaAlO3∶Eu3+ in the VUV range is weaker than that of O2--Eu3+ charge transfer band in the UV range.