Deposition of Ag Nanoparticles on Carbon Microspheres Surface:Evaluation of Structures,Electrochemic

• 作 者: 杨维佳 HAO Yamin YAN Lingpeng 杨永珍 陈永康 LIU Xuguang XU Bingshe
• 机 构: Key Laboratory of Interface Science and Engineering in Advanced Materials,Taiyuan University of Tech
• 出 处: Journal of Wuhan University of Technology(Materials Science)
• 发表日期: 2016年04期
• 关键词: exciton dissociation ultraviolet silver blended plasmon voltammetry acceptor vis

A hybrid material of carbon microspheres(CMSs) with Ag decoration(Ag/CMSs) was developed.Poly(3-hexylthiophene):Ag/CMSs composite film was prepared by spin-coating.Scanning electron microscopy,transmission electron microscopy,Fourier transform infrared spectrometry,X-ray diffraction,thermogravimetric analysis and cyclic voltammetry were employed to analyze the morphologies,structures,thermal properties and energy levels of Ag/CMSs.The optical property of the composite films was characterized by ultraviolet-visible spectrophotometry and fluorescent spectrometry.The results indicate that silver nanoparticles(AgNPs,d = 10-20 nm) are distributed on the surface of CMSs.LUMO and HOMO energy levels of Ag/CMSs are-3.97 and-5.52 e V,below the vacuum energy level,respectively,indicating that it is feasible to use Ag/CMSs as an electron acceptor.Ag NPs are blended into the active layer to trigger localized surface plasmon resonance,and consequently enhance light harvesting.The coupling of surface plasmons and excitons increased the probability of exciton dissociation.

A hybrid material of carbon microspheres (CMSs) with Ag decoration (Ag / CMSs) was developed. Poly (3-hexylthiophene): Ag / CMSs composite film was prepared by spin- coating.Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectrometry, X-ray diffraction, thermogravimetric analysis and cyclic voltammetry were employed to analyze the morphologies, structures, thermal properties and energy levels of Ag / CMS. The optical property of the composite films was characterized by ultraviolet-visible spectrophotometry and fluorescent spectrometry. results indicate that silver nanoparticles (AgNPs, d = 10-20 nm) are distributed on the surface of the CMSs.LUMO and HOMO energy levels of Ag / CMSs are-3.97 and-5.52 eV, below the vacuum energy level, respectively, indicating respectively that it is feasible to use Ag / CMSs as an electron acceptor. Ag NPs are blended into the active layer to trigger localized surface plasmon resonance, and enhance enhance light harvesting. The coupling of surface plasmons and excitons increased the probability of exciton dissociation.