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https://hdl.handle.net/10356/92447
Title: | Molecular engineering toward coexistence of dielectric and optical switch behavior in hybrid perovskite phase transition material | Authors: | Hu, Yuzhong Zhang, Hongbo Chong, Wee Kiang Li, Yongxin Ke, Yujie Ganguly, Rakesh Morris, Samuel Alexander You, Lu Yu, Ting Sum, Tze Chien Long, Yi Fan, Hong Jin |
Keywords: | Perovskite Crystals Inorganic-organic Hybrid Perovskite DRNTU::Science::Physics |
Issue Date: | 2018 | Source: | Hu, Y., Zhang, H., Chong, W. K., Li, Y., Ke, Y., Ganguly, R., … Fan, H. J. (2018). Molecular engineering toward coexistence of dielectric and optical switch behavior in hybrid perovskite phase transition material. The Journal of Physical Chemistry A, 122(31), 6416-6423. doi:10.1021/acs.jpca.8b05693 | Series/Report no.: | The Journal of Physical Chemistry A | Abstract: | Organic–inorganic hybrid perovskites with considerable dielectric differences near the phase transition are potential candidates as phase transition materials (PTMs). However, compared with traditional PTMs, which require multiple switchable channels, the hybrid perovskites so far show only switching behavior in dielectric constants. We herein report a new crystal design strategy and successful synthesis of a two-dimensional perovskite (C6H5C2H4NH3)2MnCl4. In this hybrid perovskite, the manganese chloride octahedron is a crystal field sensitive luminescent molecular system. The distortion level of MnCl64– also depends on temperature during the order–disorder phase transition. Hence, such a manganese octahedron-based perovskite can exhibit switching behaviors in both dielectric and optical properties. We observe a 14% decrease in optical absorption and 1.6 times increase in dielectric constant during the phase transition at 365 K. In addition, the characteristic photoluminescence decreases by 17% in intensity. Such a molecule-based crystal design paves a new way to explore multifunctional PTMs based on organic–inorganic perovskites. | URI: | https://hdl.handle.net/10356/92447 http://hdl.handle.net/10220/48717 |
ISSN: | 1089-5639 | DOI: | 10.1021/acs.jpca.8b05693 | Schools: | School of Materials Science & Engineering School of Physical and Mathematical Sciences |
Rights: | This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry A, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.jpca.8b05693 | Fulltext Permission: | open | Fulltext Availability: | With Fulltext |
Appears in Collections: | MSE Journal Articles SPMS Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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JPCA submission.pdf | Main article | 1.11 MB | Adobe PDF | View/Open |
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