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Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites

Eugen Klein, Andres Black, Öznur Tokmak, Christian Strelow, Rostyslav Lesyuk, Christian Klinke Orcid Logo

ACS Nano, Volume: 13, Issue: 6, Pages: 6955 - 6962

Swansea University Author: Christian Klinke Orcid Logo

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DOI (Published version): 10.1021/acsnano.9b01907

Abstract

Hybrid lead halide perovskites with 2D stacking structures have recently emerged as promising materials for optoelectronic applications. We report a method for growing 2D nanosheets of hybrid lead halide perovskites (I, Br and Cl), with tunable lateral sizes ranging from 0.05 to 8 μm and a structure...

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Published in: ACS Nano
ISSN: 1936-0851 1936-086X
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa51039
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first_indexed 2019-07-09T14:56:48Z
last_indexed 2019-07-10T21:34:54Z
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spelling 2019-07-10T15:01:07.9177491 v2 51039 2019-07-09 Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites c10c44238eabfb203111f88a965f5372 0000-0001-8558-7389 Christian Klinke Christian Klinke true false 2019-07-09 CHEM Hybrid lead halide perovskites with 2D stacking structures have recently emerged as promising materials for optoelectronic applications. We report a method for growing 2D nanosheets of hybrid lead halide perovskites (I, Br and Cl), with tunable lateral sizes ranging from 0.05 to 8 μm and a structure consisting of n stacked monolayers separated by long alkylamines, tunable from bulk down to n = 1. The key to obtaining such a wide range of perovskite properties hinged on utilizing the respective lead halide nanosheets as precursors in a hot-injection synthesis that afforded careful control over all process parameters. The layered, quantum-confined (n ≤ 4) nanosheets were comprised of major and minor fractions with differing n. Energy funneling from low to high n (high to low energy) regions within a single sheet, mediated by the length of the ligands between stacks, produced photoluminescent quantum yields as high as 49%. These large, tunable 2D nanosheets could serve as convenient platforms for future high-efficiency optoelectronic devices. Journal Article ACS Nano 13 6 6955 6962 1936-0851 1936-086X 25 6 2019 2019-06-25 10.1021/acsnano.9b01907 COLLEGE NANME Chemistry COLLEGE CODE CHEM Swansea University 2019-07-10T15:01:07.9177491 2019-07-09T13:18:59.7103630 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Eugen Klein 1 Andres Black 2 Öznur Tokmak 3 Christian Strelow 4 Rostyslav Lesyuk 5 Christian Klinke 0000-0001-8558-7389 6 0051039-09072019131938.pdf Klein-Klinke-Manuscript.pdf 2019-07-09T13:19:38.4370000 Output 1088342 application/pdf Accepted Manuscript true 2020-06-07T00:00:00.0000000 true eng
title Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
spellingShingle Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
Christian Klinke
title_short Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
title_full Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
title_fullStr Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
title_full_unstemmed Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
title_sort Micron-Size Two-Dimensional Methylammonium Lead Halide Perovskites
author_id_str_mv c10c44238eabfb203111f88a965f5372
author_id_fullname_str_mv c10c44238eabfb203111f88a965f5372_***_Christian Klinke
author Christian Klinke
author2 Eugen Klein
Andres Black
Öznur Tokmak
Christian Strelow
Rostyslav Lesyuk
Christian Klinke
format Journal article
container_title ACS Nano
container_volume 13
container_issue 6
container_start_page 6955
publishDate 2019
institution Swansea University
issn 1936-0851
1936-086X
doi_str_mv 10.1021/acsnano.9b01907
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemistry{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemistry
document_store_str 1
active_str 0
description Hybrid lead halide perovskites with 2D stacking structures have recently emerged as promising materials for optoelectronic applications. We report a method for growing 2D nanosheets of hybrid lead halide perovskites (I, Br and Cl), with tunable lateral sizes ranging from 0.05 to 8 μm and a structure consisting of n stacked monolayers separated by long alkylamines, tunable from bulk down to n = 1. The key to obtaining such a wide range of perovskite properties hinged on utilizing the respective lead halide nanosheets as precursors in a hot-injection synthesis that afforded careful control over all process parameters. The layered, quantum-confined (n ≤ 4) nanosheets were comprised of major and minor fractions with differing n. Energy funneling from low to high n (high to low energy) regions within a single sheet, mediated by the length of the ligands between stacks, produced photoluminescent quantum yields as high as 49%. These large, tunable 2D nanosheets could serve as convenient platforms for future high-efficiency optoelectronic devices.
published_date 2019-06-25T04:02:47Z
_version_ 1763753241642795008
score 11.012678

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