Back to Search
Start Over
Combining Dual-Light Emissions to Achieve Efficient Broadband Yellowish-Green Luminescence in One-Dimensional Hybrid Lead Halides
- Source :
- Inorganic Chemistry; February 2021, Vol. 60 Issue: 3 p1491-1498, 8p
- Publication Year :
- 2021
-
Abstract
- In recent years, low-dimensional lead halides have emerged as some of most attractive photoelectric materials due to their intrinsic broadband emissions with a potential application in white-light emitting diodes. To achieve the desired performance, tremendous research has emphasized the modulation of inorganic components as optical centers; however, less work has paid attention to the direct contribution of the organic components. Herein, we successfully assembled two new hybrid lead halides of [H2BPP]Pb2X6(X = Br, 1, and Cl, 2) containing one-dimensional double [Pb2X6]2–chains using optically active 1,3-bis(4-pyridyl)-propane (BPP) as an organic cation. Under UV-light excitation, compounds 1and 2exhibit broadband yellowish-green emissions, which were verified by promising photoluminescence quantum efficiencies (PLQEs) of 8.10% and 4.84%, respectively. The broadband light emissions are derived from the combination of dual higher-energy blue and lower-energy yellow light spectra, which can be attributed to the individual contributions of the organic and inorganic components, respectively, according to the time-resolved and temperature-dependent emission spectra as well as theoretical calculations. This work proves the great contribution of organic components to the photophysical properties and provides a new design strategy to realize broadband light emission by rationally combining the dual-emitting properties of different assembly blocks.
Details
- Language :
- English
- ISSN :
- 00201669 and 1520510X
- Volume :
- 60
- Issue :
- 3
- Database :
- Supplemental Index
- Journal :
- Inorganic Chemistry
- Publication Type :
- Periodical
- Accession number :
- ejs55637713
- Full Text :
- https://doi.org/10.1021/acs.inorgchem.0c02785