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Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement

Yan Zhang, Jiaheng Nie, Lijie Li Orcid Logo

Nano Research

Swansea University Author: Lijie Li Orcid Logo

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DOI (Published version): 10.1007/s12274-017-1814-x

Abstract

The luminescence of semiconductor quantum dots (QDs) can be adjusted using the piezotronic effect. An external mechanical force applied on the QD generates a piezoelectric potential, which alters the luminescence of the QD. A small mechanical force may induce a significant change on the emission spe...

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Published in: Nano Research
ISSN: 1998-0124 1998-0000
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34931
first_indexed 2017-08-17T12:50:18Z
last_indexed 2018-02-09T05:25:33Z
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spelling 2017-09-18T09:13:49.1095547 v2 34931 2017-08-17 Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement ed2c658b77679a28e4c1dcf95af06bd6 0000-0003-4630-7692 Lijie Li Lijie Li true false 2017-08-17 ACEM The luminescence of semiconductor quantum dots (QDs) can be adjusted using the piezotronic effect. An external mechanical force applied on the QD generates a piezoelectric potential, which alters the luminescence of the QD. A small mechanical force may induce a significant change on the emission spectrum. In the case of InN QDs, it is demonstrated that the unforced emission wavelength is more than doubled by a force of 1 μN. The strategy of using the piezotronic effect to tune the color of the emission leads to promising noncontact forcemeasurement applications in biological and medical sensors and force-sensitive displays. Several piezoelectric semiconductor materials have been investigated in terms of the tunability of the emission wavelength in the presence of an external applied force. It is found that CdS and CdSe demonstrate much higher tunability δλ/δF, which makes them suitable for micro/nano-newton force measurement applications. Journal Article Nano Research 1998-0124 1998-0000 piezotronic effect, quantum dot (QD), luminescence, force measurement 31 12 2017 2017-12-31 10.1007/s12274-017-1814-x COLLEGE NANME Aerospace, Civil, Electrical, and Mechanical Engineering COLLEGE CODE ACEM Swansea University 2017-09-18T09:13:49.1095547 2017-08-17T11:49:57.0521482 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering Yan Zhang 1 Jiaheng Nie 2 Lijie Li 0000-0003-4630-7692 3 0034931-18092017091304.pdf zhang2017(6).pdf 2017-09-18T09:13:04.2270000 Output 1379827 application/pdf Accepted Manuscript true 2018-09-16T00:00:00.0000000 false eng
title Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
spellingShingle Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
Lijie Li
title_short Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
title_full Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
title_fullStr Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
title_full_unstemmed Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
title_sort Piezotronic effect on the luminescence of quantum dots for micro/nano-newton force measurement
author_id_str_mv ed2c658b77679a28e4c1dcf95af06bd6
author_id_fullname_str_mv ed2c658b77679a28e4c1dcf95af06bd6_***_Lijie Li
author Lijie Li
author2 Yan Zhang
Jiaheng Nie
Lijie Li
format Journal article
container_title Nano Research
publishDate 2017
institution Swansea University
issn 1998-0124
1998-0000
doi_str_mv 10.1007/s12274-017-1814-x
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 Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - Electronic and Electrical Engineering
document_store_str 1
active_str 0
description The luminescence of semiconductor quantum dots (QDs) can be adjusted using the piezotronic effect. An external mechanical force applied on the QD generates a piezoelectric potential, which alters the luminescence of the QD. A small mechanical force may induce a significant change on the emission spectrum. In the case of InN QDs, it is demonstrated that the unforced emission wavelength is more than doubled by a force of 1 μN. The strategy of using the piezotronic effect to tune the color of the emission leads to promising noncontact forcemeasurement applications in biological and medical sensors and force-sensitive displays. Several piezoelectric semiconductor materials have been investigated in terms of the tunability of the emission wavelength in the presence of an external applied force. It is found that CdS and CdSe demonstrate much higher tunability δλ/δF, which makes them suitable for micro/nano-newton force measurement applications.
published_date 2017-12-31T01:22:58Z
_version_ 1821366632441708544
score 11.04748

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