Two-Step Dielectric Responsive Organic-Inorganic Hybrid Material with Mid-Band Light Emission |
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| Authors: | Qiang-Qiang Jia Liang Tong Prof?Dr Wan-Ying Zhang Prof?Dr Da-Wei Fu Prof?Dr Hai-Feng Lu |
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| Institution: | 1. Institute for Science and Applications of Molecular Ferroelectrics Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University, Jinhua, 321004 P. R. China;2. School of Environment and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212002 P.R. China |
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| Abstract: | Hybrid organic-inorganic perovskite (HOIP) have received tremendous scientific attention because of the phase transition and photovoltaic properties. However, achieving the special perovskite structure with both two-step dielectric response and luminescence characteristics is rarely reported. Herein, we report an organic-inorganic hybrid perovskite, (BA)2 ? PbI4] (Compound 1, BA=n-butylamine) by introducing flexible organic cations (HBA+), with direct mid-band gap as 2.28 eV. Interestingly, this material exhibits two-step reversible dielectric response at 350 K and 460 K (in heating process), respectively. Besides, the photoluminescence was found: it emits charming green light under 365 nm lamp (Photoluminescence quantum yield is 9.52 %). The outstanding two-step dielectric response and luminescence characteristics of this compound might pave the way for the application of dielectric and ferroelectric functional materials in temperature sensors and mechanical switches. |
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| Keywords: | dual dielectric response organic-inorganic hybrid perovskite phase transition photoluminescence |
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