Issue 13, 2019

Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation

Abstract

We report the formation of a new class of solvent-intercalated two-dimensional (SI-2D) formamidinium lead halide perovskites. They can be mixed with three-dimensional (3D) stoichiometric perovskites by controlling the ratio of the precursor solutions. The composite leads to greatly improved photoluminescence quantum yield (PLQY) over the 3D compound. The enhanced PLQY is attributed to a type-I band alignment between the 3D and SI-2D, as revealed by first-principles calculations, which results in confined excitons with enhanced radiative recombination. The films exhibited excellent thermal and air stability retaining PLQY > 20% over 2 months in ambient conditions. Assemblies of halide perovskites with mixed dimensionality offer a pathway to enhance optoelectronic performance and device lifetimes.

Graphical abstract: Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation

Supplementary files

Article information

Article type
Paper
Submitted
21 جنؤری 2019
Accepted
07 مارٕچ 2019
First published
07 مارٕچ 2019

J. Mater. Chem. C, 2019,7, 3945-3951

Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation

M. Shin, J. Kim, Y. Jung, T. Ruoko, A. Priimagi, A. Walsh and B. Shin, J. Mater. Chem. C, 2019, 7, 3945 DOI: 10.1039/C9TC00379G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements