Size and crystallinity effect on the ultrafast optical response of chemically synthesized silver nanoparticles

作     者：Nadzeya Khinevich Domantas Peckus Asta Tamuleviciene Gerda Klimaite Joel Henzie Tomas Tamulevicius Sigitas Tamulevicius 

作者机构：Institute of Materials Science of Kaunas University of TechnologyK.Barsausko St.59LT-51423KaunasLithuania Department of PhysicsKaunas University of TechnologyStudentu˛St.50LT-51368KaunasLithuania International Center for Materials Nanoarchitectonics(WPI-MANA)National Institute for Materials Science(NIMS)Tsukuba305-0044Japan 

出 版 物：《Journal of Materiomics》 (无机材料学学报（英文）)

年 卷 期：2024年第10卷第3期

页      面：594-600页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：NET 2 scheme(European Union’s Horizon 2020 Research and Innovation Program,grant No.685451) co-funded by the Research Council of Lithuania(LMTLT),agreement No.S-M-ERA.NET-21-2,the National Science Centre of Poland,project No.2020/02/Y/ST5/00086 the Saxon State Ministry for Science,Culture and Tourism(Germany),grant No.100577922 as well as from the tax funds on the basis of the budget passed by the Saxon state parliament 

主　　题：Silver nanospheres Silver nanocubes Electron-phonon coupling Transient absorption spectroscopy Crystallite size Polycrystalline structure 

摘      要：The excited localized surface plasmon(LSP)in metallic nanoparticles is known to relax through several processes such as electron-electron scattering,electron-phonon coupling,and phonon-phonon *** the current research,the ultrafast electron-phonon(e-ph)coupling relaxation processes for different average sizes and crystallinity of chemically synthesized silver nanoparticles were evaluated utilizing transient absorption *** nanoparticle size and crystallinity of similar linear dimension polycrystalline spherical and monocrystalline cubic nanoparticles ranging from ca.30-60 nm was related to their electron relaxation time constants and revealed very different *** the monocrystalline nanocubes,the electron-phonon coupling was not dependent on the cube edge length,while for the polycrystalline nanospheres,it was linearly decreasing with *** demonstrate that the e-ph coupling time constant could be used to evaluate crystallinity and crystallite size in plasmonic metal nanoparticles when the size(surface area)of the nanoparticle is known.