Synthetic control on structure/dimensionality and photophysical properties of low dimensional organic lead bromide perovskite
| Title | Synthetic control on structure/dimensionality and photophysical properties of low dimensional organic lead bromide perovskite |
| Publication Type | Journal Article |
| Year of Publication | 2018 |
| Authors | Haris, MPU, Bakthavatsalam, R, Shaikh, S, Kore, BP, Moghe, D, Gonnade, RG, Sarma, DD, Kabra, D, Kundu, J |
| Journal | Inorganic chemistry |
| Volume | 57 |
| Issue | 21 |
| Pagination | 13443-13452 |
| Date Published | OCT |
| Type of Article | Article |
| ISSN | 0020-1669 |
| 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 (∼410 nm). Interestingly, Mn2+ incorporated 2DN perovskites show a highly red-shifted Mn2+ emission peak at ∼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. |
| DOI | 10.1021/acs.inorgchem.8b02042 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 4.700 |
Divison category:
Physical and Materials Chemistry
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