【摘要】：紫外熒光增強薄膜是一種有效提高硅基探測器紫外響應(yīng)效率的熒光增強技術(shù)。對于旋涂法制備薄膜來說,溶劑的選擇很重要,對使用不同溶劑旋涂制備的薄膜分析其紫外光譜透過率,成膜效果和熒光物質(zhì)分布。四氫呋喃作為溶劑在旋涂的過程中全部揮發(fā),雖不影響紫外光譜的透過率,但熒光物質(zhì)的分布和表面粗糙度不理想。硝化棉相比于PMMA(聚二甲基硅氧烷,polydimethylsito xane)和PDMS(聚甲基丙烯酸甲酯,Polymethy Imethacrylate)紫外透過率低。PMMA常溫狀態(tài)下為固體,需要使用氯代烴或者芳烴溶解再旋涂,溶解時間較長且成膜效果不好;PDMS為膠體同熒光物質(zhì)混合后直接旋涂,再加熱80℃固化成膜,成膜效果好表面,粗糙度低,且熒光物質(zhì)分布均勻。
[Abstract]:Ultraviolet fluorescence enhanced film is a kind of fluorescence enhancement technology which can effectively improve the UV response efficiency of silicon based detectors. The selection of solvent is very important for the preparation of thin films by spin-coating. The UV transmittance, film-forming effect and fluorescence distribution of the films prepared by spin-coating with different solvents are analyzed. The total volatilization of tetrahydrofuran as a solvent in the spin-coating process does not affect the transmittance of UV spectra, but the distribution of fluorescent substances and the surface roughness are not satisfactory. The UV transmittance of nitrocellulose cotton is lower than that of PMMA (polydimethylsiloxane, polydimethylsito xane) and PDMS). PMMA is solid at room temperature and needs to be dissolved by chlorinated hydrocarbon or aromatics. The dissolution time is long and the film forming effect is not good; PDMS was directly spin-coated by colloid and fluorescent material, and then heated at 80 鈩，

本文編號：2365722