Far-infrared transparent conductors  

作　　者：Chaoquan Hu Zijian Zhou Xiaoyu Zhang Kaiyu Guo Can Cui Yuankai Li Zhiqing Gu Wei Zhang Liang Shen Jiaqi Zhu 

机构地区：[1]State Key Laboratory of Superhard Materials,Key Laboratory of Automobile Materials of Ministry of Education,School of Materials Science and Engineering,Jilin Provincial International Cooperation Key Laboratory of High-Efficiency Clean Energy Materials,Jilin University,Changchun 130012,China [2]College of Information Science and Engineering,Jiaxing University,Jiaxing 314001,China [3]Electron Microscopy Center,Jilin University,Changchun 130012,China [4]State Key Laboratory of Integrated Optoelectronics,College of Electronic Science and Engineering,International Center of Future Science,Jilin University,Changchun 130012,China [5]National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin 150080,China

出　　处：《Light(Science & Applications)》2023年第6期982-993,共12页光（科学与应用)（英文版）

基　　金：The authors gratefully acknowledge the financial support from National Natural Science Foundation of China(Grant Nos.52032004,52272153);KLOMT Key Laboratory Open Project(2022KLOMT02-05).

摘　　要：The long-standing challenge in designing far-infrared transparent conductors(FIRTC)is the combination of high plasma absorption edge(λ_(p))and high conductivity(σ).These competing requirements are commonly met by tuning carrier concentration or/and effective carrier mass in a metal oxide/oxonate with low optical dielectric constant(ε_(opt)=2-7).However,despite the highσ,the transparent band is limited to mid-infrared(λ_(p)<5μm).In this paper,we break the trade-off between highσandλ_(p)by increasing the“so-called constant”ε_(opt)that has been neglected,and successfully develop the material family of FIRTC withε_(opt)>15 andλ_(p)>15μm.These FIRTC crystals are mainly octahedrally-coordinated heavy-metal chalcogenides and their solid solutions with shallow-level defects.Their highε_(opt)relies on the formation of electron-deficiency multicenter bonds resulting in the great electron-polarization effect.The new FIRTC enables us to develop the first“continuous film”type far-infrared electromagnetic shielder that is unattainable using traditional materials.Therefore,this study may inaugurate a new era in far-infrared optoelectronics.

关 键 词：TRANSPARENT NEGLECTED enable 

分 类 号：TN215[电子电信—物理电子学]