dc.contributor.authorGiovanni, David
dc.contributor.authorChong, Wee Kiang
dc.contributor.authorLiu, Fredrik Yu Yang
dc.contributor.authorDewi, Herlina Arianita
dc.contributor.authorYin, Tingting
dc.contributor.authorLekina, Yulia
dc.contributor.authorShen, Ze Xiang
dc.contributor.authorMathews, Nripan
dc.contributor.authorGan, Chee Kwan
dc.contributor.authorSum, Tze Chien
dc.identifier.citationGiovanni, D., Chong, W. K., Liu, F. Y. Y., Dewi, H. A., Yin, T., Lekina, Y., . . . Sum, T. C. Coherent Spin and Quasiparticle Dynamics in Solution-Processed Layered 2D Lead Halide Perovskites. Advanced Science, 5(10), 1800664-. doi:10.1002/advs.201800664en_US
dc.description.abstractLayered 2D halide perovskites with their alternating organic and inorganic atomic layers that form a self‐assembled quantum well system are analogues of the purely inorganic 2D transition metal dichalcogenides. Within their periodic structures lie a hotbed of photophysical phenomena such as dielectric confinement effect, optical Stark effect, strong exciton–photon coupling, etc. Detailed understanding into the strong light–matter interactions in these hybrid organic–inorganic semiconductor systems remains modest. Herein, the intricate coherent interplay of exciton, spin, and phonon dynamics in (C6H5C2H4NH3)2PbI4 thin films using transient optical spectroscopy is explicated. New insights into the hotly debated origins of transient spectral features, relaxation pathways, ultrafast spin relaxation via exchange interaction, and strong coherent exciton–phonon coupling are revealed from the detailed phenomenological modeling. Importantly, this work unravels the complex interplay of spin–quasiparticle interactions in these layered 2D halide perovskites with large spin–orbit coupling.en_US
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en_US
dc.description.sponsorshipASTAR (Agency for Sci., Tech. and Research, S’pore)en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.format.extent6 p.en_US
dc.relation.ispartofseriesAdvanced Scienceen_US
dc.rights© 2018 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.en_US
dc.subject2D Perovskitesen_US
dc.subjectCoherent Phonon Dynamicsen_US
dc.titleCoherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskitesen_US
dc.typeJournal Article
dc.contributor.researchEnergy Research Institute @NTUen_US
dc.contributor.schoolSchool of Physical and Mathematical Sciencesen_US
dc.contributor.schoolInterdisciplinary Graduate School (IGS)en_US
dc.description.versionPublished versionen_US

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