Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation

Mingue Shin; Joonyun Kim; Young Kwang Jung; Tero petri Ruoko; Arri Priimagi; Aron Walsh; Byungha Shin

doi:10.1039/c9tc00379g

Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation

Mingue Shin, Joonyun Kim, Young Kwang Jung, Tero petri Ruoko, Arri Priimagi, Aron Walsh, Byungha Shin

Department of Physics

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

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.

Original language	English
Pages (from-to)	3945-3951
Number of pages	7
Journal	Journal of Materials Chemistry C
Volume	7
Issue number	13
DOIs	https://doi.org/10.1039/c9tc00379g
State	Published - 2019

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© The Royal Society of Chemistry.

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title = "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.",

author = "Mingue Shin and Joonyun Kim and Jung, {Young Kwang} and Ruoko, {Tero petri} and Arri Priimagi and Aron Walsh and Byungha Shin",

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doi = "10.1039/c9tc00379g",

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AU - Shin, Mingue

AU - Kim, Joonyun

AU - Jung, Young Kwang

AU - Ruoko, Tero petri

AU - Priimagi, Arri

AU - Walsh, Aron

AU - Shin, Byungha

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

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JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

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Low-dimensional formamidinium lead perovskite architectures via controllable solvent intercalation

Abstract

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