| Apr 29, 2019 | |
Novel 2D hybrid perovskite ferroelectric with high color rendering index(Nanowerk News) Luminescent ferroelectrics have attracted intense attention in flat-panel display, field emission display (FED), and vacuum fluorescent displays, which mainly focus on the multicomponent systems of rare-earth doping ferroelectric ceramics. However, ferroelectrics coexisting with strong single-component white-light emission still remain unexplored. |
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| In a study published in Advanced Functional Materials ("The First 2D Hybrid Perovskite Ferroelectric Showing Broadband White-Light Emission with High Color Rendering Index"), a research team led by Prof. LUO Junhua and Prof. SUN Zhihua from Fujian Institute of Research on the Structure of Matter (FJIRSM) of Chinese Academy of Sciences firstly reported a white-light luminescent ferroelectric (C4H12N)4PbCl4 with high color rendering index, featuring unique two-dimensional (2D) layered perovskite architecture. | |
| Researchers found that the orientation of organic cations and the significant structural distortion of PbCl6 synergistically induce the generation of large spontaneous polarizations. | |
| Moreover, they found that the ferroelectric material exhibits broadband white light emission under UV excitation with a color rendering index as high as 86. | |
| Mechanism studies indicated that the white-light emission is derived from the strong electron–phonon coupling associated with the structural distortion of PbCl6 octahedra. | |
| As a first white-light luminescent ferroelectric, (C4H12N)4PbCl4 showed the unprecedented coexistence of ferroelectricity and broadband white-light emission in a single component 2D perovskite hybrid. | |
| This study paves a way to design new hybrid ferroelectrics for multifunctional application in the photoelectronic field. |
| Source: Chinese Academy of Sciences | |
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