Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites
Layered 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 dielectr...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2018
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| Online Access: | https://hdl.handle.net/10356/89234 http://hdl.handle.net/10220/46674 |
| _version_ | 1811679087582773248 |
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| author | Giovanni, David Chong, Wee Kiang Liu, Fredrik Yu Yang Dewi, Herlina Arianita Yin, Tingting Lekina, Yulia Shen, Ze Xiang Mathews, Nripan Gan, Chee Kwan Sum, Tze Chien |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Giovanni, David Chong, Wee Kiang Liu, Fredrik Yu Yang Dewi, Herlina Arianita Yin, Tingting Lekina, Yulia Shen, Ze Xiang Mathews, Nripan Gan, Chee Kwan Sum, Tze Chien |
| author_sort | Giovanni, David |
| collection | NTU |
| description | Layered 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. |
| first_indexed | 2024-10-01T03:03:35Z |
| format | Journal Article |
| id | ntu-10356/89234 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:03:35Z |
| publishDate | 2018 |
| record_format | dspace |
| spelling | ntu-10356/892342021-01-18T04:50:15Z Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites Giovanni, David Chong, Wee Kiang Liu, Fredrik Yu Yang Dewi, Herlina Arianita Yin, Tingting Lekina, Yulia Shen, Ze Xiang Mathews, Nripan Gan, Chee Kwan Sum, Tze Chien School of Physical and Mathematical Sciences Interdisciplinary Graduate School (IGS) Energy Research Institute @ NTU (ERI@N) 2D Perovskites Coherent Phonon Dynamics DRNTU::Science::Chemistry Layered 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. NRF (Natl Research Foundation, S’pore) ASTAR (Agency for Sci., Tech. and Research, S’pore) MOE (Min. of Education, S’pore) Published version 2018-11-21T05:44:11Z 2019-12-06T17:20:50Z 2018-11-21T05:44:11Z 2019-12-06T17:20:50Z 2018 Journal Article Giovanni, 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.201800664 https://hdl.handle.net/10356/89234 http://hdl.handle.net/10220/46674 10.1002/advs.201800664 en Advanced Science https://doi.org/10.21979/N9/DX8UBN © 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. 6 p. application/pdf |
| spellingShingle | 2D Perovskites Coherent Phonon Dynamics DRNTU::Science::Chemistry Giovanni, David Chong, Wee Kiang Liu, Fredrik Yu Yang Dewi, Herlina Arianita Yin, Tingting Lekina, Yulia Shen, Ze Xiang Mathews, Nripan Gan, Chee Kwan Sum, Tze Chien Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites |
| title | Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites |
| title_full | Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites |
| title_fullStr | Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites |
| title_full_unstemmed | Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites |
| title_short | Coherent spin and quasiparticle dynamics in solution-processed layered 2D lead halide perovskites |
| title_sort | coherent spin and quasiparticle dynamics in solution processed layered 2d lead halide perovskites |
| topic | 2D Perovskites Coherent Phonon Dynamics DRNTU::Science::Chemistry |
| url | https://hdl.handle.net/10356/89234 http://hdl.handle.net/10220/46674 |
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