“Hot”electrons in metallic nanostructures—nonthermal carriers or heating?

作     者：Yonatan Dubi Yonatan Sivan 

作者机构：Department of Chemistry and the Ilse Katz Center for nanoscale Science and TechnologyBen-Gurion University of the NegevBeer ShevaIsrael School of Electrical and Computer Engineering and the Ilse Katz Center for nanoscale Science and TechnologyBen-Gurion University of the NegevBeer ShevaIsrael 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2019年第8卷第1期

页      面：368-375页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

主　　题：illumination theory rendering 

摘      要：Understanding the interplay between illumination and the electron distribution in metallic nanostructures is a crucial step towards developing applications such as plasmonic photocatalysis for green fuels,nanoscale photodetection and *** this interplay is challenging,as it requires taking into account all channels of energy flow in the electronic ***,we develop such a theory,which is based on a coupled Boltzmann-heat equations and requires only energy conservation and basic thermodynamics,where the electron distribution,and the electron and phonon(lattice)temperatures are determined *** this theory to realistic illuminated nanoparticle systems,we find that the electron and phonon temperatures are similar,thus justifying the(classical)singletemperature *** show that while the fraction of high-energy“hotcarriers compared to thermalized carriers grows substantially with illumination intensity,it remains extremely small(on the order of 10^(-8)).Importantly,most of the absorbed illumination power goes into heating rather than generating hot carriers,thus rendering plasmonic hot carrier generation extremely *** formulation allows for the first time a unique quantitative comparison of theory and measurements of steady-state electron distributions in metallic nanostructures.