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Synthetic Control on Structure/Dimensionality and Photophysical Properties of Low Dimensional Organic Lead Bromide Perovskite
- Source :
- IndraStra Global.
- Publication Year :
- 2018
- Publisher :
- AMER CHEMICAL SOC, 2018.
-
Abstract
- Low dimensional lead halide perovskites have attracted huge research interest due to their structural diversity and remarkable photophysical properties. The ability to controllably change dimensionality/structure of perovskites remains highly challenging. Here, we report synthetic control on structure/dimensionality of ethylenediammonium (ED) lead bromide perovskite from a two dimensionally networked (2DN) sheet to a one dimensionally networked (1DN) chain structure. Intercalation of solvent molecules into the perovskite plays a crucial role in directing the final dimensionality/structure. This change in dimensionality reflects strongly in the observed differences in photophysical properties. Upon UV excitation, the 1DN structure emits white light due to easily formed "self-trapped" excitons. 2DN perovskites show band edge blue emission (similar to 410 nm). Interestingly, Mn2+ incorporated 2DN perovskites show a highly red-shifted Mn2+ emission peak at similar to 670 nm. Such a long wavelength Mn2+ emission peak is unprecedented in the perovskite family. This report highlights the synthetic ability to control the dimensionality/structure of perovskite and consequently its photophysical properties.
- Subjects :
- DOPANT ENERGY-TRANSFER
SOLAR-CELLS
IODIDE PEROVSKITES
Exciton
Intercalation (chemistry)
Structure (category theory)
Halide
02 engineering and technology
010402 general chemistry
EXCITON
01 natural sciences
Inorganic Chemistry
WHITE-LIGHT EMISSION
Molecule
Physical and Theoretical Chemistry
INORGANIC PEROVSKITES
CDSE QUANTUM DOTS
Perovskite (structure)
Chemistry
HYBRID PEROVSKITES
OPTICAL-PROPERTIES
021001 nanoscience & nanotechnology
HALIDE PEROVSKITES
0104 chemical sciences
Chemical physics
0210 nano-technology
Excitation
Curse of dimensionality
Subjects
Details
- Language :
- English
- ISSN :
- 23813652
- Database :
- OpenAIRE
- Journal :
- IndraStra Global
- Accession number :
- edsair.doi.dedup.....c3e0e6db485c810b1c6f06cd5a280777
- Full Text :
- https://doi.org/10.1002/2014GL060132