Photoinduced large polaron transport and dynamics in organic-inorganic hybrid lead halide perovskite with terahertz probes

查看全文 作　　者：Zuanming [1]Jin;Yan [1]Peng;Yuqing [1]Fang;Zhijiang [1]Ye;Zhiyuan [1]Fan;Zhilin [2]Liu;Xichang [2]Bao;Heng [3]Gao;Wei [3]Ren;Jing [4]Wu;Guohong [5]Ma;Qianli [6]Chen;Chao [7]Zhang;Alexey [8,9]VBalakin;Alexander [8,9]PShkurinov;Yiming [1]Zhu;Songlin [1]Zhuang

机构地区：[1]Terahertz Technology Innovation Research Institute,Terahertz Spectrum and Imaging Technology Cooperative Innovation Center,Shanghai Key Lab of Modern Optical System,University of Shanghai for Science and Technology,Shanghai,200093,China;[2]Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao,266101,China;[3]Physics Department,Materials Genome Institute,State Key Laboratory of Advanced Special Steel,Shanghai Key Laboratory of High Temperature Superconductors,International Centre of Quantum and Molecular Structures,Shanghai University,Shanghai,200444,China;[4]Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Yutian Road 500,Shanghai,China;[5]Department of Physics,Shanghai University,99 Shangda Road,Shanghai,200444,China;[6]University of Michigan-Shanghai Jiao Tong University Joint Institute,Shanghai Jiao Tong University,Shanghai,China;[7]School of Physics,University of Wollongong,Wollongong,NSW,2522,Australia;[8]Department of Physics and International Laser Center,Lomonosov Moscow State University,Leninskie Gory 1,Moscow,19991,Russia;[9]ILIT RAS-Branch of the FSRC《Crystallography and Photonics》RAS,Svyatoozerskaya 1,140700,Shatura,Moscow Region,Russia

出　　处：《Light(Science & Applications)》索引2022年第11卷第8期,共12页

基　　金：the National Natural Science Foundation of China(NSFC,Grants No.61988102,No.61975110,No.61735010);the 111 Project(Grant No.D18014);The Key project supported by Science and Technology Commission Shanghai Municipality(Grant No.YDZX20193100004960);Science and Technology Commission of Shanghai Municipality(Shanghai Rising-Star Program Grant No.18QA1401700);General Administration of Customs People’s Republic of China(Grant No.2019HK006);Shanghai Educational Development Foundation(Grant No.16CG45). 摘　　要：Organic-inorganic hybrid metal halide perovskites(MHPs)have attracted tremendous attention for optoelectronic applications.The long photocarrier lifetime and moderate carrier mobility have been proposed as results of the large polaron formation in MHPs.However,it is challenging to measure the effective mass and carrier scattering parameters of the photogenerated large polarons in the ultrafast carrier recombination dynamics.Here,we show,in a one-step spectroscopic method,that the optical-pump and terahertz-electromagnetic probe(OPTP)technique allows us to access the nature of interplay of photoexcited unbound charge carriers and optical phonons in polycrystalline CH_(3)NH_(3)PbI_(3)(MAPbI_(3))of about 10μm grain size.Firstly,we demonstrate a direct spectral evidence of the large polarons in polycrystalline MAPbI_(3).Using the Drude-Smith-Lorentz model along with the Frӧhlich-type electron-phonon(e-ph)coupling,we determine the effective mass and scattering parameters of photogenerated polaronic carriers.We discover that the resulting moderate polaronic carrier mobility is mainly influenced by the enhanced carrier scattering,rather than the polaron mass enhancement.While,the formation of large polarons in MAPbI_(3)polycrystalline grains results in a long charge carrier lifetime at room temperature.Our results provide crucial information about the photo-physics of MAPbI3 and are indispensable for optoelectronic device development with better performance. 关键词：POLARON PEROVSKITE INORGANIC

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Photoinduced large polaron transport and dynamics in organic-inorganic hybrid lead halide perovskite with terahertz probes

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