Ho~(3+)/Yb~(3+)∶8YSZ纳米粉体制备及发光性能研究

通过化学共沉淀法制备Ho~(3+)/Yb~(3+)共掺杂的氧化钇稳定的氧化锆(8YSZ)纳米粉体。研究了煅烧温度对Ho~(3+)/Yb~(3+)共掺杂8YSZ纳米粉体荧光光谱和上转换发光性能的影响。结果表明:在448 nm波长激发光激发下,Ho~(3+)/Yb~(3+)∶8YSZ纳米粉体有一个549 nm的绿光发射峰,随着煅烧温度的升高,Ho~(3+)/Yb~(3+)∶8YSZ纳米粉体的荧光强度先升高后降低。980 nm波长激光激发下,Ho~(3+)/Yb~(3+)∶8YSZ纳米粉体在450~750 nm范围内有一个中心波长在539 nm的绿光发射峰和一个中心波长在650 nm的红光发射峰,随着煅烧温度的升高,纳米粉体的颗粒尺寸增大的同时,其上转换发光强度也逐渐增大。

Preparation and Luminescence Property of Ho3+/Yb3 +:8YSZ Nanopowders

Ho3 +/Yb3 + co-doped yttria-stabilized zirconia ( 8YSZ ) nano powders were prepared by chemical coprecipitation .The effect of calcination temperatures on the fluorescence spectra and up-conversion luminescence properties of the Ho 3+/Yb3+co-doped nano 8YSZ was investigated .The results show that the Ho 3+/Yb3 +co-doped 8YSZ nano powders have a green emission peak at 549 nm under excitation of the 448 nm wavelength excitation light .The luorescence intensity of the Ho 3+/Yb3+ co-doped 8 YSZ nanopowders increases first , and then decreases with increasing the calcination temperatures.Under excitation of the 980 nm wavelength laser , the Ho3+/Yb3+ co-doped 8YSZ nanopowders have a green emission peak at a central wavelength of 539 nm and a red emission peak at a central wavelength of 650 nm in the range of 450-750 nm.With increasing the calcination temperatures , the particle sizes of the nano powders increase and the upper conversion luminescence intensity also gradually increases .