Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation
File(s)
Accepted version
Author(s)
Type
Journal Article
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.
Date Issued
2019-04-07
Date Acceptance
2019-03-07
Citation
Journal of Materials Chemistry C, 2019, 7 (13), pp.3945-3951
ISSN
2050-7526
Publisher
Royal Society of Chemistry
Start Page
3945
End Page
3951
Journal / Book Title
Journal of Materials Chemistry C
Volume
7
Issue
13
Copyright Statement
This journal is © 2019 The Royal Society of Chemistry
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000464314700026&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Physics, Applied
Materials Science
Physics
HALIDE PEROVSKITES
DEPENDENT FLUORESCENCE
HYBRID PEROVSKITE
QUANTUM DOTS
EFFICIENT
TEMPERATURE
ORIGIN
FILMS
EMISSION
BRIGHT
Publication Status
Published
Date Publish Online
2019-03-07