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Tailored Synthesis of an Unprecedented Pb–Mn Heterometallic Halide Hybrid with Enhanced Emission
- Source :
- Journal of the American Chemical Society; August 2019, Vol. 141 Issue: 31 p12197-12201, 5p
- Publication Year :
- 2019
-
Abstract
- Organic–inorganic lead halide hybrids have attracted extensive interest in solid-state lighting, due to their superior color tunability and low-cost solution processing. However, the relatively low photoluminescence quantum efficiency (PLQE) is a common issue for most bulk lead halide hybrids. Inspired by the intriguing luminescence properties of heterometallic complexes, we rationally developed an unprecedented two-dimensional (2D) Pb–Mn heterometallic halide hybrid, (C5H14N2)2Pb4MnCl14(2), through a precisely tailored synthetic approach based on (C5H14N2)2Pb5Cl14(1). Intriguingly, 2features a unique 2D heterometallic halide layer configuration, in which the strong quantum confinement facilitates efficient energy transfer from bound excitons to d-states of Mn2+, resulting in highly sensitized Mn2+emission. The PLQE of 2is up to 32%, considerably higher than that of pristine 1(less than 1%). Moreover, 2presents significant environmental and thermal stability, benefiting from its cluster feature. To our best knowledge, this is the first example of construction of a Pb–Mn heterometallic halide hybrid with bulk highly efficient red emission. This work provides a way to enhance the PLQE of lead halide hybrids via sensitization in rationally designed heterometallic halide hybrids.
Details
- Language :
- English
- ISSN :
- 00027863 and 15205126
- Volume :
- 141
- Issue :
- 31
- Database :
- Supplemental Index
- Journal :
- Journal of the American Chemical Society
- Publication Type :
- Periodical
- Accession number :
- ejs50660925
- Full Text :
- https://doi.org/10.1021/jacs.9b04829