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Thickness control of organic semiconductor-incorporated perovskites.

Authors :
Park JY
Song R
Liang J
Jin L
Wang K
Li S
Shi E
Gao Y
Zeller M
Teat SJ
Guo P
Huang L
Zhao YS
Blum V
Dou L
Source :
Nature chemistry [Nat Chem] 2023 Dec; Vol. 15 (12), pp. 1745-1753. Date of Electronic Publication: 2023 Aug 31.
Publication Year :
2023

Abstract

Two-dimensional organic semiconductor-incorporated perovskites are a promising family of hybrid materials for optoelectronic applications, owing in part to their inherent quantum well architecture. Tuning their structures and properties for specific properties, however, has remained challenging. Here we report a general method to tune the dimensionality of phase-pure organic semiconductor-incorporated perovskite single crystals during their synthesis, by judicious choice of solvent. The length of the conjugated semiconducting organic cations and the dimensionality (n value) of the inorganic layers can be manipulated at the same time. The energy band offsets and exciton dynamics at the organic-inorganic interfaces can therefore be precisely controlled. Furthermore, we show that longer and more planar π-conjugated organic cations induce a more rigid inorganic crystal lattice, which leads to suppressed exciton-phonon interactions and better optoelectronic properties as compared to conventional two-dimensional perovskites. As a demonstration, optically driven lasing behaviour with substantially lower lasing thresholds was realized.<br /> (© 2023. The Author(s), under exclusive licence to Springer Nature Limited.)

Details

Language :
English
ISSN :
1755-4349
Volume :
15
Issue :
12
Database :
MEDLINE
Journal :
Nature chemistry
Publication Type :
Academic Journal
Accession number :
37653228
Full Text :
https://doi.org/10.1038/s41557-023-01311-0