Shining Light on Sulfide Perovskites: LaYS3 Material Properties and Solar Cells

Andrea Crovetto, Rasmus Nielsen, Mohnish Pandey, Lowell Watts, John G. Labram, Mathias Geisler, Nicolas Stenger, Karsten Wedel Jacobsen, Ole Hansen, Brian Seger, Ib Chorkendorff, Peter Christian Kjærgaard Vesborg*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The sulfide perovskite LaYS3 has been recently identified as a promising wide band gap photoabsorber material by computational screening techniques. In this study, we combine experiment and theory to comprehensively characterize LaYS3 thin films produced by sulfurization of sputter-deposited precursors. An attractive feature of LaYS3 is its optimal band gap (2.0 eV) for application as a wide band gap photoabsorber in tandem solar energy conversion devices. Promisingly, the LaYS3 films are photoconductive, with a grain size in excess of 1 μm and comparable recombination time scales to state-of-the-art hybrid halide perovskite absorbers. Although the fabrication of solar cells based on LaYS3 absorbers is complicated by the high temperature necessary to grow the compound, complete solar cells could be produced in this work by growing LaYS3 on refractory metal back contacts. These are the first reported solar cells based on a sulfide perovskite absorber. A major reason for their poor performance could be the highly localized trap states observed directly by photoluminescence imaging of LaYS3, which may also explain the surprisingly long carrier lifetimes and the low carrier mobility found in this material
Original languageEnglish
JournalChemistry of Materials
Volume31
Issue number9
Pages (from-to)3359-3369
Number of pages11
ISSN0897-4756
DOIs
Publication statusPublished - 2019

Cite this

@article{00eea2e4b9434acb9c5e1e1654630c5e,
title = "Shining Light on Sulfide Perovskites: LaYS3 Material Properties and Solar Cells",
abstract = "The sulfide perovskite LaYS3 has been recently identified as a promising wide band gap photoabsorber material by computational screening techniques. In this study, we combine experiment and theory to comprehensively characterize LaYS3 thin films produced by sulfurization of sputter-deposited precursors. An attractive feature of LaYS3 is its optimal band gap (2.0 eV) for application as a wide band gap photoabsorber in tandem solar energy conversion devices. Promisingly, the LaYS3 films are photoconductive, with a grain size in excess of 1 μm and comparable recombination time scales to state-of-the-art hybrid halide perovskite absorbers. Although the fabrication of solar cells based on LaYS3 absorbers is complicated by the high temperature necessary to grow the compound, complete solar cells could be produced in this work by growing LaYS3 on refractory metal back contacts. These are the first reported solar cells based on a sulfide perovskite absorber. A major reason for their poor performance could be the highly localized trap states observed directly by photoluminescence imaging of LaYS3, which may also explain the surprisingly long carrier lifetimes and the low carrier mobility found in this material",
author = "Andrea Crovetto and Rasmus Nielsen and Mohnish Pandey and Lowell Watts and Labram, {John G.} and Mathias Geisler and Nicolas Stenger and Jacobsen, {Karsten Wedel} and Ole Hansen and Brian Seger and Ib Chorkendorff and Vesborg, {Peter Christian Kj{\ae}rgaard}",
year = "2019",
doi = "10.1021/acs.chemmater.9b00478",
language = "English",
volume = "31",
pages = "3359--3369",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "American Chemical Society",
number = "9",

}

Shining Light on Sulfide Perovskites: LaYS3 Material Properties and Solar Cells. / Crovetto, Andrea; Nielsen, Rasmus ; Pandey, Mohnish; Watts, Lowell; Labram, John G.; Geisler, Mathias; Stenger, Nicolas; Jacobsen, Karsten Wedel; Hansen, Ole; Seger, Brian; Chorkendorff, Ib; Vesborg, Peter Christian Kjærgaard.

In: Chemistry of Materials, Vol. 31, No. 9, 2019, p. 3359-3369.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Shining Light on Sulfide Perovskites: LaYS3 Material Properties and Solar Cells

AU - Crovetto, Andrea

AU - Nielsen, Rasmus

AU - Pandey, Mohnish

AU - Watts, Lowell

AU - Labram, John G.

AU - Geisler, Mathias

AU - Stenger, Nicolas

AU - Jacobsen, Karsten Wedel

AU - Hansen, Ole

AU - Seger, Brian

AU - Chorkendorff, Ib

AU - Vesborg, Peter Christian Kjærgaard

PY - 2019

Y1 - 2019

N2 - The sulfide perovskite LaYS3 has been recently identified as a promising wide band gap photoabsorber material by computational screening techniques. In this study, we combine experiment and theory to comprehensively characterize LaYS3 thin films produced by sulfurization of sputter-deposited precursors. An attractive feature of LaYS3 is its optimal band gap (2.0 eV) for application as a wide band gap photoabsorber in tandem solar energy conversion devices. Promisingly, the LaYS3 films are photoconductive, with a grain size in excess of 1 μm and comparable recombination time scales to state-of-the-art hybrid halide perovskite absorbers. Although the fabrication of solar cells based on LaYS3 absorbers is complicated by the high temperature necessary to grow the compound, complete solar cells could be produced in this work by growing LaYS3 on refractory metal back contacts. These are the first reported solar cells based on a sulfide perovskite absorber. A major reason for their poor performance could be the highly localized trap states observed directly by photoluminescence imaging of LaYS3, which may also explain the surprisingly long carrier lifetimes and the low carrier mobility found in this material

AB - The sulfide perovskite LaYS3 has been recently identified as a promising wide band gap photoabsorber material by computational screening techniques. In this study, we combine experiment and theory to comprehensively characterize LaYS3 thin films produced by sulfurization of sputter-deposited precursors. An attractive feature of LaYS3 is its optimal band gap (2.0 eV) for application as a wide band gap photoabsorber in tandem solar energy conversion devices. Promisingly, the LaYS3 films are photoconductive, with a grain size in excess of 1 μm and comparable recombination time scales to state-of-the-art hybrid halide perovskite absorbers. Although the fabrication of solar cells based on LaYS3 absorbers is complicated by the high temperature necessary to grow the compound, complete solar cells could be produced in this work by growing LaYS3 on refractory metal back contacts. These are the first reported solar cells based on a sulfide perovskite absorber. A major reason for their poor performance could be the highly localized trap states observed directly by photoluminescence imaging of LaYS3, which may also explain the surprisingly long carrier lifetimes and the low carrier mobility found in this material

U2 - 10.1021/acs.chemmater.9b00478

DO - 10.1021/acs.chemmater.9b00478

M3 - Journal article

VL - 31

SP - 3359

EP - 3369

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 9

ER -