采用杂化前驱体的湿化学合成法制备了偏钒酸铷(RbVO3)发光材料. 利用粉末X射线衍射(XRD)、 红外光谱仪(IR)等对RbVO3的结构进行了表征, 利用紫外-可见(UV-Vis)吸收光谱、 光致发光光谱等研究了该发光材料的光致发光性能, 并采用基于密度泛函理论的CASTEP程序计算了RbVO3的能带. 结果表明, 在357 nm紫外光的激发下, RbVO3产生发光峰在525 nm附近、 色坐标为(0.318 0, 0.430 9)的绿白光发射, 发光亮度高; RbVO3计算的光学带隙为2.67 eV, 与实验值较为吻合.

In the present paper, RbVO3 was prepared by wet chemistry synthesis from hybrid precursor. The structure of RbVO3 was characterized by X-ray diffraction (XRD) pattern and FTIR spectra. Photoluminescent(PL)properties were investigated by UV-Vis absorption spectrum and PL spectrum. In addition, the band gap of RbVO3 was calculated by using the CASTEP code with density-functional theory (DFT) method. The results indicated that RbVO3 could emit intense green-white fluorescence with peak wavelength at 525 nm and the color coordinates was (0.318 0, 0.430 9)under UV excitation at 357 nm. It was demonstrated that the theoretical result of band gap, which is 2.67 eV, agreed well with the experiment.