Eu^(3+)掺杂SiO_2气凝胶薄膜的时间分辨光谱及发光动力学

TIME RESOLVED SPECTRA AND LUMINESCENT DYNAMICS OF Eu 3+ DOPED SiO 2 AEROGEL THIN FILM

气凝胶（ａｅｒｏｇｅｌｓ）是一种新型的轻质纳米多孔性非晶材料，其孔洞率高达８０～９０％，孔洞的典型尺寸为１～１００ｎｍ．已有文献报道利用ＳｉＯ２气凝胶的纳米网络结构制备出以纳米气凝胶为骨架的纳米材料［１～２］．通过溶胶－凝胶方法制得了Ｅｕ３＋掺杂Ｓｉ...

Eu 3+ doped SiO 2 aerogel film were prepared by sol gel process. The surface structure was observed by AFM. Excitation,emission and time resolved spectra were measured. The time resolved spectra show that the emission from 5D 1 was decay, while the ones from 5D 0 show a increasing process in decay process. Luminescent dynamic equations were setup to explain these decay process.