Ytterbium and erbium co-doped lanthanum gallate (LaGaO₃) up-conversion phosphors have been synthesized using polyol method followed by heating at 1000°C. From Fourier transform infrared (FTIR) spectroscopy and thermal analysis studies of as prepared sample, formation of hydroxy carbonate precursor has been confirmed. This precursor undergoes two step decomposition leading to the formation of LaGaO₃ phase. Detailed X-ray diffraction studies confirmed the formation of orthorhombic LaGaO₃ phase with distorted GaO₆ octahedra and distorted LaO₁₂ cuboctahedra. As the annealing temperature increased from 1000°C to 1200°C, green to red ratio (GRR) as well as lifetime values increased and this is explained based on the increase in crystallite size from 40 nm to 95 nm and associated decrease in the extent of quenching (non-radiative) processes. Variation in the “n” values accounts for the observed increase in the GRR values corresponding to 1000°C and 1200°C annealed samples with increase in laser power.

polyol和co共掺杂的没食子酸镧（LaGaO ₃）上转换磷光体已使用多元醇方法合成，然后在1000°C加热。通过傅里叶变换红外（FTIR）光谱和所制备样品的热分析研究，已证实形成了碳酸羟基酯前体。该前体经历两步分解，导致形成LaGaO ₃相。详细的X射线衍射研究确认了畸变的GaO ₆八面体和畸变的LaO ₁₂的正交晶体LaGaO ₃相的形成。八面体。随着退火温度从1000°C增加到1200°C，绿色与红色之比（GRR）以及寿命值增加，这是基于晶粒尺寸从40 nm增加到95 nm以及相应程度的减少而解释的。淬火（非辐射）过程。“ n”值的变化说明了观察到的GRR值随激光功率的增加而相应于1000°C和1200°C退火的样品的增加。