期刊
ADVANCED FUNCTIONAL MATERIALS
卷 29, 期 6, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201805038
关键词
2D materials; ferroelectrics; organic-inorganic hybrids; perovskites; white-light emissions
类别
资金
- National Natural Science Foundation of China [21833010, 21875251, 21601188, 21525104, 51502290, 21622108, 21571178, 51502288]
- NSF of Fujian Province [2016J01082]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDB20010200]
- Youth Innovation Promotion of CAS [2015240, 2016274]
Luminescent ferroelectrics have attracted considerable attention in terms of integrated photoelectronic devices, most of which are focused on the multicomponent systems of rare-earth doping ferroelectric ceramics. However, bulk ferroelectricity with coexistence of strong white-light emission, especially in the single-component system, remains quite rare. Here, a new organic-inorganic hybrid ferroelectric of (C4H9NH3)(2)PbCl4 (1) is reported, adopting a 2D layered perovskite architecture, which exhibits an unprecedented coexistence of notable ferroelectricity and intrinsic white-light emission. Decent above-room-temperature spontaneous polarization of approximate to 2.1 mu C cm(-2) is confirmed for 1. Particularly, it also exhibits brilliant broadband white-light emission with a high color-rendering-index up to 86 under UV excitation. Structural analyses indicate that ferroelectricity of 1 originates from molecular reorientation of dynamic organic cations, as well as significant structural distortion of PbCl6 octahedra that also contribute to its white-light emission. This work paves an avenue to design new hybrid ferroelectrics for multifunctional application in the photoelectronic field.
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