Determination of Particle Sizes and Crystalline Phases on Colloidal Silicon Nanoparticle Suspensions

作     者：S.M. Scholz and H Hofmann(Powder Technology Laboratory, Department of Materials Science, Swiss Federal Institiute of Technology Lausanne,CH-1015 Lausanne, Switzerland) 

作者机构：Powder Technology Laboratory Department of Materials Science Swiss Federal Institiute of Technology Lausanne CH-1015 Lausanne Switzerland 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：1999年第15卷第6期

页      面：548-550页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学] 

主　　题：Determination of Particle Sizes and Crystalline Phases on Colloidal Silicon Nanoparticle Suspensions 

摘      要：Particle size and crystallinity of silicon nanoparticles were determined by analyzing the optical extinction spectra of colloidal suspensions. Experimental results from these colloids were anaiyzed using Mie theory in connection with effective medium theory, in order to determine particle sizes and their internal structure with the simple technique of optical transmission spectroscopy. By modeling an effective refractive index for the particles, the crystalline volume fraction can be extracted from extinction spectra in addition to information about the size. The crystalline volume fraction determined in this way were used to calibrate the ratio of the Raman cross sections for nanocrystalline and amorphous silicon, which was found to be σc./σa = 0.66