Enhancement of Emission from Lanthanide Dopants in Perovskite Nanocrystals through a Temperature-Dependent Phase Transformation of the Perovskite Lattice

Woo Je Chang; Shawn Irgen-Gioro; Albert F. Vong; Hacksung Kim; Michael W. Mara; Lin X. Chen; Emily A. Weiss

doi:10.1021/acs.jpcc.2c03189

Enhancement of Emission from Lanthanide Dopants in Perovskite Nanocrystals through a Temperature-Dependent Phase Transformation of the Perovskite Lattice

Woo Je Chang, Shawn Irgen-Gioro, Albert F. Vong, Hacksung Kim, Michael W. Mara, Lin X. Chen, Emily A. Weiss^*

^*Corresponding author for this work

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

1 Scopus citations

Abstract

The excited states of lanthanide ions (Ln3+) exhibit ultranarrow emission and long spin dephasing lifetimes suitable for optoelectronic and quantum applications but are not directly optically accessible. One effective strategy to excite Ln3+ ions is to dope them into a semiconductor host lattice, which acts as a photosensitizer. This work describes enhancement of emission intensity by a factor of 19 with decreasing temperature (from 300 to 5 K) from Sm3+ ions in CsPbCl3 nanocrystal hosts. Structural characterization over the same temperature region reveals that this enhancement is primarily due to a symmetry-lowering cubic-to-orthorhombic phase transition of the host lattice, which reduces the local site symmetry of the dopant and increases the Sm3+∗ emission quantum yield.

Original language	English (US)
Pages (from-to)	15247-15253
Number of pages	7
Journal	Journal of Physical Chemistry C
Volume	126
Issue number	36
DOIs	https://doi.org/10.1021/acs.jpcc.2c03189
State	Published - Sep 15 2022

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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title = "Enhancement of Emission from Lanthanide Dopants in Perovskite Nanocrystals through a Temperature-Dependent Phase Transformation of the Perovskite Lattice",

abstract = "The excited states of lanthanide ions (Ln3+) exhibit ultranarrow emission and long spin dephasing lifetimes suitable for optoelectronic and quantum applications but are not directly optically accessible. One effective strategy to excite Ln3+ ions is to dope them into a semiconductor host lattice, which acts as a photosensitizer. This work describes enhancement of emission intensity by a factor of 19 with decreasing temperature (from 300 to 5 K) from Sm3+ ions in CsPbCl3 nanocrystal hosts. Structural characterization over the same temperature region reveals that this enhancement is primarily due to a symmetry-lowering cubic-to-orthorhombic phase transition of the host lattice, which reduces the local site symmetry of the dopant and increases the Sm3+∗ emission quantum yield.",

author = "Chang, {Woo Je} and Shawn Irgen-Gioro and Vong, {Albert F.} and Hacksung Kim and Mara, {Michael W.} and Chen, {Lin X.} and Weiss, {Emily A.}",

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doi = "10.1021/acs.jpcc.2c03189",

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AU - Chang, Woo Je

AU - Irgen-Gioro, Shawn

AU - Vong, Albert F.

AU - Kim, Hacksung

AU - Mara, Michael W.

AU - Chen, Lin X.

AU - Weiss, Emily A.

PY - 2022/9/15

Y1 - 2022/9/15

N2 - The excited states of lanthanide ions (Ln3+) exhibit ultranarrow emission and long spin dephasing lifetimes suitable for optoelectronic and quantum applications but are not directly optically accessible. One effective strategy to excite Ln3+ ions is to dope them into a semiconductor host lattice, which acts as a photosensitizer. This work describes enhancement of emission intensity by a factor of 19 with decreasing temperature (from 300 to 5 K) from Sm3+ ions in CsPbCl3 nanocrystal hosts. Structural characterization over the same temperature region reveals that this enhancement is primarily due to a symmetry-lowering cubic-to-orthorhombic phase transition of the host lattice, which reduces the local site symmetry of the dopant and increases the Sm3+∗ emission quantum yield.

AB - The excited states of lanthanide ions (Ln3+) exhibit ultranarrow emission and long spin dephasing lifetimes suitable for optoelectronic and quantum applications but are not directly optically accessible. One effective strategy to excite Ln3+ ions is to dope them into a semiconductor host lattice, which acts as a photosensitizer. This work describes enhancement of emission intensity by a factor of 19 with decreasing temperature (from 300 to 5 K) from Sm3+ ions in CsPbCl3 nanocrystal hosts. Structural characterization over the same temperature region reveals that this enhancement is primarily due to a symmetry-lowering cubic-to-orthorhombic phase transition of the host lattice, which reduces the local site symmetry of the dopant and increases the Sm3+∗ emission quantum yield.

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Enhancement of Emission from Lanthanide Dopants in Perovskite Nanocrystals through a Temperature-Dependent Phase Transformation of the Perovskite Lattice

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