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Field Effect and Photoconduction in Au25 Nanoclusters Films

Michael Galchenko, Andrés Black, Leonard Heymann, Christian Klinke Orcid Logo

Advanced Materials, Volume: 31, Issue: 18, Start page: 1900684

Swansea University Author: Christian Klinke Orcid Logo

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DOI (Published version): 10.1002/adma.201900684

Abstract

Quantum confined Au nanoclusters exhibit molecule-like properties, including atomic precision and discrete energy levels. The electrical conductivity of Au nanocluster films can vary by several orders of magnitude, and is determined by the strength of the electronic coupling between the individual n...

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Published in: Advanced Materials
ISSN: 0935-9648 1521-4095
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50213
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first_indexed 2019-05-09T20:01:13Z
last_indexed 2020-07-10T03:11:50Z
id cronfa50213
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spelling 2020-07-09T20:12:24.4069750 v2 50213 2019-05-02 Field Effect and Photoconduction in Au25 Nanoclusters Films c10c44238eabfb203111f88a965f5372 0000-0001-8558-7389 Christian Klinke Christian Klinke true false 2019-05-02 CHEM Quantum confined Au nanoclusters exhibit molecule-like properties, including atomic precision and discrete energy levels. The electrical conductivity of Au nanocluster films can vary by several orders of magnitude, and is determined by the strength of the electronic coupling between the individual nanoclusters in the film. Similar to quantum confined, semiconducting quantum dots, the electrical coupling in films is dependent on the size and structure of the Au core and the length and conjugation of the organic ligands surrounding it. Unlike quantum dots, however, semiconducting transport has not been reported in Au nanocluster films. We demonstrate that through a simple yet careful choice of cluster size and organic ligands, stable Au nanocluster films can electronically couple and become semiconducting, exhibiting electric field effect and photoconductivity. The molecule-like nature of the Au nanoclusters is evidenced by a hopping transport mechanism reminiscent of doped, disordered organic semiconductor films. These results demonstrate the potential of metal nanoclusters as a solution processed material for semiconducting devices. Journal Article Advanced Materials 31 18 1900684 0935-9648 1521-4095 3 5 2019 2019-05-03 10.1002/adma.201900684 COLLEGE NANME Chemistry COLLEGE CODE CHEM Swansea University 2020-07-09T20:12:24.4069750 2019-05-02T16:00:24.6117088 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Michael Galchenko 1 Andrés Black 2 Leonard Heymann 3 Christian Klinke 0000-0001-8558-7389 4 0050213-02052019160059.pdf Gold-cluster-transport-Klinke-Manuscript.pdf 2019-05-02T16:00:59.7470000 Output 1875072 application/pdf Accepted Manuscript true 2020-03-25T00:00:00.0000000 true eng
title Field Effect and Photoconduction in Au25 Nanoclusters Films
spellingShingle Field Effect and Photoconduction in Au25 Nanoclusters Films
Christian Klinke
title_short Field Effect and Photoconduction in Au25 Nanoclusters Films
title_full Field Effect and Photoconduction in Au25 Nanoclusters Films
title_fullStr Field Effect and Photoconduction in Au25 Nanoclusters Films
title_full_unstemmed Field Effect and Photoconduction in Au25 Nanoclusters Films
title_sort Field Effect and Photoconduction in Au25 Nanoclusters Films
author_id_str_mv c10c44238eabfb203111f88a965f5372
author_id_fullname_str_mv c10c44238eabfb203111f88a965f5372_***_Christian Klinke
author Christian Klinke
author2 Michael Galchenko
Andrés Black
Leonard Heymann
Christian Klinke
format Journal article
container_title Advanced Materials
container_volume 31
container_issue 18
container_start_page 1900684
publishDate 2019
institution Swansea University
issn 0935-9648
1521-4095
doi_str_mv 10.1002/adma.201900684
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 Quantum confined Au nanoclusters exhibit molecule-like properties, including atomic precision and discrete energy levels. The electrical conductivity of Au nanocluster films can vary by several orders of magnitude, and is determined by the strength of the electronic coupling between the individual nanoclusters in the film. Similar to quantum confined, semiconducting quantum dots, the electrical coupling in films is dependent on the size and structure of the Au core and the length and conjugation of the organic ligands surrounding it. Unlike quantum dots, however, semiconducting transport has not been reported in Au nanocluster films. We demonstrate that through a simple yet careful choice of cluster size and organic ligands, stable Au nanocluster films can electronically couple and become semiconducting, exhibiting electric field effect and photoconductivity. The molecule-like nature of the Au nanoclusters is evidenced by a hopping transport mechanism reminiscent of doped, disordered organic semiconductor films. These results demonstrate the potential of metal nanoclusters as a solution processed material for semiconducting devices.
published_date 2019-05-03T04:01:34Z
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score 11.014537

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