Issue 8, 2022

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+ 2F5/22F7/2 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.

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

Supplementary files

Article information

Article type
Communication
Submitted
18 Apr 2022
Accepted
06 Jun 2022
First published
13 Jun 2022

Mater. Horiz., 2022,9, 2191-2197

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

M. N. Tran, I. J. Cleveland, J. R. Geniesse and E. S. Aydil, Mater. Horiz., 2022, 9, 2191 DOI: 10.1039/D2MH00483F

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