K2 CO3对 ZnO 纳米晶掺杂锌铝硅玻璃的制备及光学性能的影响

摘要

利用高温熔融和后续热处理方法获得了ZnO 纳米晶掺杂的 SiO 2-Al2 O 3-ZnO-K2 CO 3(SAZK)玻璃.利用差热分析(DSC)、透射电镜(TEM)、X 射线衍射谱(XRD)、傅里叶红外光谱(FT-IR)和荧光光谱(PL)等对样品进行了表征.随着玻璃组分中K2 CO 3含量逐渐升高,热处理后 SAZK 玻璃中的主晶相逐渐由 Zn2 SiO 4变为 ZnO.在325 nm 激发下,ZnO纳米晶掺杂的 SAZK 玻璃在580 nm 处有一个宽波段发射峰.在 K2 CO 3含量为8％(摩尔分数)时,SAZK玻璃的发射强度最大.%In order to investigate the effects of K2 CO 3 on the preparation and optical properties of ZnO nanocrys-tals doped zinc-aluminium-silicon (SAZK)glasses,SAZK glasses were prepared by melt-quenching method fol-lowed by a heat treatment process.Differential thermal analysis,transmission electronic microscopy,X-ray dif-fractometer,Fourier transform infrared spectrometer and fluorescence spectrophotometer have been used to in-vestigate the microstructure and optical properties of the samples.The results showed that glass ceramics were obtained after heat treated at 750 ℃ for 2 h.The main crystal phase in SAZK glasses transformed from Zn2 SiO 4 to ZnO nanocrystals with increasing K2 CO 3 content.SAZK glass ceramics showed a wide emission band from 450 to 700 nm with a maximum at 580 nm.The photoluminescence intensity of glass containing 8 mol% K2 CO 3 in the raw material was strongest.