Simple experimental procedures to distinguish photothermal from hot-carrier processes in plasmonics  

作　　者：Guillaume Baffou Ivan Bordacchini Andrea Baldi Romain Quidant 

机构地区：[1]Institut Fresnel,CNRS,Aix Marseille University,Centrale Marseille,Marseille,France [2]ICFO-Institut de Ciencies Fotoniques,The Barcelona Institute of Science and Technology,08860Castelldefels,Barcelona,Spain [3]DIFFER-Dutch Institute for Fundamental Energy Research,De Zaale 20,5612 AJ Eindhoven,The Netherlands [4]Vrije Universiteit Amsterdam,De Boelelaan 1081,1081 HV Amsterdam,The Netherlands [5]ICREA-Institucio Catalana de Recerca i Estudis Avancats,08010 Barcelona,Spain [6]Nanophotonic Systems Laboratory,Department of Mechanical and Process Engineering,ETH Zurich,8092,Zurich,Switzerland

出　　处：《Light(Science & Applications)》2020年第1期974-989,共16页光（科学与应用)（英文版）

基　　金：support by the Dutch Research Council(Nederlandse Organisatie voor Wetenschappelijk Onderzoek)via the NWO Vidi award 680-47-550.

摘　　要：Light absorption and scattering of plasmonic metal nanoparticles can lead to non-equilibrium charge carriers,intense electromagnetic near-fields,and heat generation,with promising applications in a vast range of fields,from chemical and physical sensing to nanomedicine and photocatalysis for the sustainable production of fuels and chemicals.Disentangling the relative contribution of thermal and non-thermal contributions in plasmon-driven processes is,however,difficult.Nanoscale temperature measurements are technically challenging,and macroscale experiments are often characterized by collective heating effects,which tend to make the actual temperature increase unpredictable.This work is intended to help the reader experimentally detect and quantify photothermal effects in plasmon-driven chemical reactions,to discriminate their contribution from that due to photochemical processes and to cast a critical eye on the current literature.To this aim,we review,and in some cases propose,seven simple experimental procedures that do not require the use of complex or expensive thermal microscopy techniques.These proposed procedures are adaptable to a wide range of experiments and fields of research where photothermal effects need to be assessed,such as plasmonic-assisted chemistry,heterogeneous catalysis,photovoltaics,biosensing,and enhanced molecular spectroscopy.

关 键 词：collective PHOTOCHEMICAL INTENSE 

分 类 号：O53[理学—等离子体物理]