High photoluminescence quantum yield near-infrared emission from a lead-free ytterbium-doped double perovskite

Minh N. Tran; Iver J. Cleveland; Joseph R. Geniesse; Eray S. Aydil

doi:10.1039/d2mh00483f

High photoluminescence quantum yield near-infrared emission from a lead-free ytterbium-doped double perovskite

Minh N. Tran, Iver J. Cleveland, Joseph R. Geniesse, Eray S. Aydil

Chemical and Biomolecular Engineering

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

Abstract

When excited by photons with energies greater than 2.2 eV, the bandgap energy, Yb-doped Cs₂AgBiBr₆ thin films synthesized via physical vapor deposition emit strong near-infrared luminescence centered at ∼1.24 eV via the Yb^{3+ 2}F_5/2 → ²F_7/2 electronic transition. Robust, reproducible, and stable photoluminescence quantum yields (PLQY) as high as 82.5% are achieved with Cs₂AgBiBr₆ films doped with 8% Yb. This high PLQY indicates facile and efficient energy transfer from the perovskite host, Cs₂AgBiBr₆, to Yb, making Cs₂AgBiBr₆ the most promising lead-free down-conversion material.

Original language	English (US)
Pages (from-to)	2191-2197
Number of pages	7
Journal	Materials Horizons
Volume	9
Issue number	8
DOIs	https://doi.org/10.1039/d2mh00483f
State	Published - Jun 13 2022

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Process Chemistry and Technology
Electrical and Electronic Engineering

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10.1039/d2mh00483f

Cite this

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title = "High photoluminescence quantum yield near-infrared emission from a lead-free ytterbium-doped double perovskite",

abstract = "When excited by photons with energies greater than 2.2 eV, the bandgap energy, Yb-doped Cs2AgBiBr6 thin films synthesized via physical vapor deposition emit strong near-infrared luminescence centered at ∼1.24 eV via the Yb3+ 2F5/2 → 2F7/2 electronic transition. Robust, reproducible, and stable photoluminescence quantum yields (PLQY) as high as 82.5% are achieved with Cs2AgBiBr6 films doped with 8% Yb. This high PLQY indicates facile and efficient energy transfer from the perovskite host, Cs2AgBiBr6, to Yb, making Cs2AgBiBr6 the most promising lead-free down-conversion material.",

author = "Tran, {Minh N.} and Cleveland, {Iver J.} and Geniesse, {Joseph R.} and Aydil, {Eray S.}",

note = "Publisher Copyright: {\textcopyright} 2022 The Royal Society of Chemistry.",

year = "2022",

month = jun,

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doi = "10.1039/d2mh00483f",

language = "English (US)",

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T1 - High photoluminescence quantum yield near-infrared emission from a lead-free ytterbium-doped double perovskite

AU - Tran, Minh N.

AU - Cleveland, Iver J.

AU - Geniesse, Joseph R.

AU - Aydil, Eray S.

PY - 2022/6/13

Y1 - 2022/6/13

N2 - When excited by photons with energies greater than 2.2 eV, the bandgap energy, Yb-doped Cs2AgBiBr6 thin films synthesized via physical vapor deposition emit strong near-infrared luminescence centered at ∼1.24 eV via the Yb3+ 2F5/2 → 2F7/2 electronic transition. Robust, reproducible, and stable photoluminescence quantum yields (PLQY) as high as 82.5% are achieved with Cs2AgBiBr6 films doped with 8% Yb. This high PLQY indicates facile and efficient energy transfer from the perovskite host, Cs2AgBiBr6, to Yb, making Cs2AgBiBr6 the most promising lead-free down-conversion material.

AB - When excited by photons with energies greater than 2.2 eV, the bandgap energy, Yb-doped Cs2AgBiBr6 thin films synthesized via physical vapor deposition emit strong near-infrared luminescence centered at ∼1.24 eV via the Yb3+ 2F5/2 → 2F7/2 electronic transition. Robust, reproducible, and stable photoluminescence quantum yields (PLQY) as high as 82.5% are achieved with Cs2AgBiBr6 films doped with 8% Yb. This high PLQY indicates facile and efficient energy transfer from the perovskite host, Cs2AgBiBr6, to Yb, making Cs2AgBiBr6 the most promising lead-free down-conversion material.

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High photoluminescence quantum yield near-infrared emission from a lead-free ytterbium-doped double perovskite

Abstract

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