Journal
NEW JOURNAL OF CHEMISTRY
Volume 47, Issue 5, Pages 2405-2411Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj04939b
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Organic-inorganic hybrid perovskite (OIHP) materials have been extensively studied in the scientific community due to their vitality and compatibility in various fields. This article reports two multi-functional OIHPs with reversible two-step dielectric switching and photoluminescence properties.
There has been broad exploration of organic-inorganic hybrid perovskite (OIHP) materials in the scientific community because they have shown vigorous vitality and compatibility in the fields of photovoltaics, light-emitting diodes, and intelligent switches. Based on the relationship between structure and property, the internal structure of a material often directly affects its physical and chemical properties, such as electrical and optical performances. OIHPs with one solid-solid phase transition behavior have been widely studied and reported. However, multi-functional OIHPs possessing a two-step dielectric response coupled with photoluminescence properties are rarely reported. Herein, we report two multi-functional hybrid materials, [(BTA)(2)MnCl2.4Br1.6] (compound 1) and [(BTA)(2)MnCl4] (compound 2)(BTA = 3-bromopropyltrimethylamonium). Both compounds undergo two sequential structural transitions accompanying remarkably bistable dielectric responses. Moreover, compounds 1 and 2 can emit bright green light under 365 nm with photoluminescence decay lifetimes of 0.153 ms and 0.198 ms, respectively. Notably, the photoluminescence quantum yield of compound 1 is further increased compared with that of compound 2. These two-step reversible dielectric switching materials with photoluminescence properties will provide a new case and guidance for further research and exploration of multifunctional materials that undergo multi-step dielectric switching in the application of sensors.
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