CAJ | 학술논문

利用溶胶-凝胶法在玻璃基底上成功制备了Ag-SiO2复合纳米颗粒薄膜， SEM、TEM和XRD的表征分析表明Ag是以单晶纳米颗粒的形态均匀分散在SiO2基质中，形成了多孔状Ag-SiO2复合纳米颗粒薄膜。从Ag-SiO2复合纳米颗粒薄膜的光吸收谱发现，该复合薄膜中Ag纳米颗粒具有较强的等离子共振吸收峰，峰位在430 nm附近，随着复合薄膜中Ag、Si摩尔比的逐渐增大，等离子共振吸收峰不断增强且发生蓝移，蓝移量可达30 nm；研究Ag-SiO2复合纳米颗粒薄膜的光致发光特性发现，当激发波长为220 nm时，复合薄膜分别在330 nm和375 nm处出现了两个发光带，随着复合薄膜中Ag、Si摩尔比增大到0．11，两发光带均逐渐增强，继续增加Ag、Si摩尔比，两发光带又逐渐减弱，且375 nm处的发光带变化尤为显著。
이용용효-응효법재파리기저상성공제비료Ag-SiO2복합납미과립박막， SEM、TEM화XRD적표정분석표명Ag시이단정납미과립적형태균균분산재SiO2기질중，형성료다공상Ag-SiO2복합납미과립박막。종Ag-SiO2복합납미과립박막적광흡수보발현，해복합박막중Ag납미과립구유교강적등리자공진흡수봉，봉위재430 nm부근，수착복합박막중Ag、Si마이비적축점증대，등리자공진흡수봉불단증강차발생람이，람이량가체30 nm；연구Ag-SiO2복합납미과립박막적광치발광특성발현，당격발파장위220 nm시，복합박막분별재330 nm화375 nm처출현료량개발광대，수착복합박막중Ag、Si마이비증대도0．11，량발광대균축점증강，계속증가Ag、Si마이비，량발광대우축점감약，차375 nm처적발광대변화우위현저。
The Sol-Geltechnique is used to prepare the Ag-SiO 2 composite nanoparticle film on glass substrate.The SEM, TEM and XRD measurements of the films indicate that the single crystal metal Ag nanoparticles are uniformly embed-ded into the SiO2 particles.The Ag-SiO2 composite nanoparticle films are formed.The optical properties of the Ag-SiO2 com-posite nanoparticle films were studied.The results show that there is a surface plasmon resonance ( SPR) peak around 430 nm in the optical absorption spectra of Ag-SiO2 composite nanoparticlefilms.As the molar ratio of Ag and Si increases , the intensity of SPR peak is gradually enhanced, and a blue shift of the SPR peak occurs.The amount of blue shift is about 30 nm.Furthermore, two photoluminescence (PL) peaks at 330 nm and 375 nm (excitation wavelength is 220 nm) are ob-served in the PL spectra of the Ag-SiO2 composite nanoparticle films.In addition, the molar ratio of Ag and Si has a modula-tion on the two PL peaks .