Anisotropic carrier dynamics and laser-fabricated luminescent patterns on oriented single-crystal perovskite wafers - Details

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Perovskite　materials　and　their　applications　in　optoelectronics　have　attracted　intensive　attentions　in　recent　years.　However,　in-depth　understanding　about　their　anisotropic　behavior　in　ultrafast　carrier　dynamics　is　still　lacking.　Here　we　explore　the　ultrafast　dynamical　evolution　of　photo-excited　carriers　and　photoluminescence　based　on　differently-oriented　MAPbBr3　wafers.　The　distinct　in-plane　polarization　of　carrier　relaxation　dynamics　of　the　(100),　(110)　and　(111)　wafers　and　their　out-of-plane　anisotropy　in　a　picosecond　time　scale　were　found　by　femtosecond　time-　and　polarization-resolved　transient　transmission　measurements,　indicating　the　relaxation　process　dominated　by　optical/acoustic　phonon　interaction　is　related　to　photoinduced　transient　structure　rearrangements.　Femtosecond　laser　two-photon　fabricated　patterns　exhibit　three　orders　of　magnitude　enhancement　of　emission　due　to　the　formation　of　tentacle-like　microstructures.　Such　a　ultrafast　dynamic　study　carried　on　differently-oriented　crystal　wafers　is　believed　to　provide　a　deep　insight　about　the　photophysical　process　of　perovskites　and　to　be　helpful　for　developing　polarization-sensitive　and　ultrafast-response　optoelectronic　devices.　©　2024,　The　Author(s).

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[ 1 ] [Ge C.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Ge C.]State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China
[ 3 ] [Li Y.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Li Y.]Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing, 100875, China
[ 5 ] [Song H.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 6 ] [Xie Q.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 7 ] [Zhang L.]State Key Laboratory of NBC Protection for Civilian, Beijing, 102205, China
[ 8 ] [Ma X.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 9 ] [Liu J.]Key Laboratory of Advanced Functional Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 10 ] [Guo X.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 11 ] [Yan Y.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 12 ] [Liu D.]Key Laboratory of Advanced Functional Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing, 100124, China
[ 13 ] [Zhang W.]Department of Physics and Applied Optics Beijing Area Major Laboratory, Center for Advanced Quantum Studies, Beijing Normal University, Beijing, 100875, China
[ 14 ] [Liu S.]Institute of Laser Engineering, School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing, 100124, China
[ 15 ] [Liu Y.]State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China

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Nature Communications

ISSN： 2041-1723

Year： 2024

Issue： 1

Volume： 15

1 6 . 6 0 0

JCR@2022

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WoS CC Cited Count： 0

SCOPUS Cited Count： 11

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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