Zinc titanate (ZnTiO₃) phosphors containing Er³⁺/Yb³⁺ as active ions have been synthesized by using the solid state reaction method. The structural, surface morphology and optical properties of the Er³⁺/Yb³⁺ ZnTiO₃ phosphors have been studied by X-ray diffraction (XRD), FE-SEM, EDX, Fourier Transform Infrared (FTIR), Raman analysis. The quantum computational program has been employed to investigate the FTIR spectra of geometrically optimized structure. The molecular orbital (MO) energy level diagrams for the electron spin states at the transition wave numbers have been reported. The transition states have been evaluated with time-dependent density functional theory (TDDFT) by using hybrid functional B3LYP. Photoluminescence study of the developed phosphors has been performed upon excitation at 426 nm and 980 nm from Xenon arc lamp and diode laser respectively. On introducing the Yb³⁺, the upconversion (UC) emission intensity of the green and red bands of the Er³⁺: ZnTiO₃ phosphors have been enhanced about ∼ 52 and ∼ 132 times respectively. The temperature sensing study of the Er³⁺/Yb³⁺: ZnTiO₃ phosphors upon 980 nm excitation up to 528 K temperature by using the green UC emission bands have been demonstrated.

通过固态反应法合成了以Er ³⁺ / Yb ³⁺为活性离子的钛酸锌（ZnTiO ₃）荧光粉。Er ³⁺ / Yb ³⁺ ZnTiO ₃的结构，表面形态和光学性质通过X射线衍射（XRD），FE-SEM，EDX，傅立叶变换红外（FTIR）和拉曼分析对磷光体进行了研究。量子计算程序已被用于研究几何优化结构的FTIR光谱。已经报道了跃迁波数下电子自旋态的分子轨道（MO）能级图。过渡态已使用依赖于时间的密度泛函理论（TDDFT）通过使用混合功能B3LYP进行了评估。分别在氙弧灯和二极管激光器的426 nm和980 nm处激发后，对已开发的磷光体进行了光致发光研究。引入Yb ^3+时，Er ³⁺：ZnTiO ₃的绿色和红色谱带的上转换（UC）发射强度磷光体分别被增强了约52和132倍。已经证明了通过使用绿色UC发射带对980 nm激发到528 K的温度下Er ³⁺ / Yb ³⁺：ZnTiO ₃荧光粉的温度传感研究。