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Tetrameric cluster assembled one-dimensional hybrid lead halides with broadband light emission.
- Source :
- CrystEngComm; 12/21/2020, Vol. 22 Issue 47, p8208-8213, 6p
- Publication Year :
- 2020
-
Abstract
- It remains significant to explore new types of hybrid lead halides to realize the diversifications of structural and luminescence properties due to the excellent optoelectronic performances of perovskites. Herein, by choosing various organic molecules as cationic templates, we constructed a series of new one-dimensional (1D) lead halide perovskites, namely, [DMEDA]Pb<subscript>2</subscript>Br<subscript>6</subscript>·H<subscript>2</subscript>O (1), [ATMPD]Pb<subscript>2</subscript>Br<subscript>6</subscript>·H<subscript>2</subscript>O (2) and [TMPrDA]<subscript>2</subscript>Pb<subscript>3</subscript>X<subscript>10</subscript> (3: X = Br; 4: X = Cl). The crystal structures of compounds 1–4 contain 1D [Pb<subscript>2</subscript>Br<subscript>6</subscript>]<superscript>2−</superscript> and [Pb<subscript>3</subscript>X<subscript>10</subscript>]<superscript>4−</superscript> chains based on [Pb<subscript>4</subscript>X<subscript>16</subscript>] tetramer clusters as basic building units, respectively. Remarkably, compound 2 displays broadband yellow light emissions spanning the entire visible spectral range and centered at 534 nm, which can be ascribed to self-trapped excitons based on systematic characterization including time-resolved PL emission and theoretical studies. This work provides a series of new low-dimensional hybrid lead halides as prototypes to enrich the halide chemistry including crystal engineering and optoelectronic performance. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14668033
- Volume :
- 22
- Issue :
- 47
- Database :
- Complementary Index
- Journal :
- CrystEngComm
- Publication Type :
- Academic Journal
- Accession number :
- 147600518
- Full Text :
- https://doi.org/10.1039/d0ce01202e