Bright circularly-polarized photoluminescence in chiral layered lead-halide perovskites [research data]
Hybrid semiconductor materials are predicted to lock chirality into place and encode asymmetry into their electronic states, while the softness of their crystal lattice accommodates lattice strain and maintains high crystal quality with the low defect densities necessary for high luminescence yields...
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Database Research Data |
| Language: | English |
| Published: |
Heidelberg
Universität
2023-07-24
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| DOI: | 10.11588/data/DSDJUD |
| Subjects: | |
| Online Access: | Resolving-System, kostenfrei, Volltext: https://doi.org/10.11588/data/DSDJUD Verlag, kostenfrei, Volltext: https://heidata.uni-heidelberg.de/dataset.xhtml?persistentId=doi:10.11588/data/DSDJUD 
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| Author Notes: | Shanpu Liu, Mikaël Kepenekian, Stanislav Bodnar, Sascha Feldmann, Markus W. Heindl, Natalie Fehn, Jonathan Zerhoch, Andrii Shcherbakov, Alexander Pöthig, Aras Kartouzian, Ian D. Sharp, Claudine Katan, Jacky Even, Felix Deschler |
MARC
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| 245 | 1 | 0 | |a Bright circularly-polarized photoluminescence in chiral layered lead-halide perovskites [research data] |c Shanpu Liu, Mikaël Kepenekian, Stanislav Bodnar, Sascha Feldmann, Markus W. Heindl, Natalie Fehn, Jonathan Zerhoch, Andrii Shcherbakov, Alexander Pöthig, Aras Kartouzian, Ian D. Sharp, Claudine Katan, Jacky Even, Felix Deschler |
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| 520 | |a Hybrid semiconductor materials are predicted to lock chirality into place and encode asymmetry into their electronic states, while the softness of their crystal lattice accommodates lattice strain and maintains high crystal quality with the low defect densities necessary for high luminescence yields. The realization of chiral bulk emitters with bright circularly-polarized luminescence from such materials is desired for the design of chiroptical photonic and opto-spintronic applications. Here, we report photoluminescence quantum efficiencies (PLQE) as high as 39%, and degrees of circularly polarized photoluminescence of up to 52%, at room temperature, in the chiral layered hybrid lead-halide perovskites (R/S/Rac)-3BrMBA2PbI4 (3BrMBA = 1-(3-Bromphenyl)-ethylamine). Using x-ray diffraction and density-functional theory we elucidate the detailed chirality transfer mechanism from chiral crystal structures to spin-orbit-split band structures. Using state-of-the-art transient chiroptical spectroscopy, we rationalize the excellent photoluminescence yields from suppression of non-radiative loss channels and very high rates of radiative recombination. We further find that photo-excitations sustain polarization lifetimes that exceed the timescales of radiative decays, which rationalize the high degrees of polarized luminescence. We postulate that the superior optoelectronic properties of the layered hybrid perovskites arise from their special tolerance to crystal structure chirality, which we carefully designed by cation engineering. Our findings pave the way towards high-performance solution-processed photonic systems for chiroptical applications and chiral-spintronic logic at room temperature. | ||
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