No Cover Image

Journal article 1039 views 328 downloads

Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity

Christoph Bauer, Rostyslav Lesyuk, Mahdi Samadi Khoshkhoo, Christian Klinke, Vladimir Lesnyak, Alexander Eychmüller

The Journal of Physical Chemistry C, Volume: 125, Issue: 11, Pages: 6442 - 6448

Swansea University Author: Christian Klinke

Check full text

DOI (Published version): 10.1021/acs.jpcc.1c00491

Abstract

We investigated the colloidal synthesis of Bi2Se3 nanosheets in ethylene glycol with the goal of increasing their lateral dimensions while keeping their thickness within a few nanometers. The influence of proton-donating sulfuric acid was found to be a triggering factor that promoted the lateral gro...

Full description

Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447 1932-7455
Published: American Chemical Society (ACS) 2021
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa56731
first_indexed 2021-04-25T10:27:54Z
last_indexed 2025-01-29T19:52:55Z
id cronfa56731
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2025-01-29T15:41:23.5775517</datestamp><bib-version>v2</bib-version><id>56731</id><entry>2021-04-25</entry><title>Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity</title><swanseaauthors><author><sid>c10c44238eabfb203111f88a965f5372</sid><firstname>Christian</firstname><surname>Klinke</surname><name>Christian Klinke</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2021-04-25</date><abstract>We investigated the colloidal synthesis of Bi2Se3 nanosheets in ethylene glycol with the goal of increasing their lateral dimensions while keeping their thickness within a few nanometers. The influence of proton-donating sulfuric acid was found to be a triggering factor that promoted the lateral growth of up to 10 &#x3BC;m, whereas the thickness remained in the range 10&#x2013;12 nm. The lateral size distribution was further optimized by size-selective precipitation enabling individual contacting of the nanosheets by electron-beam lithography. Electrical characterization of individually contacted nanosheets revealed a metal-like temperature dependence of the resistivity and values of the specific conductivity in the range of 470 S/cm at room temperature and 880 S/cm at 5.5 K, which is attributed to the surface-induced off-stoichiometry. The presented colloidal nanosheets can potentially serve as a platform for further studies on topologically nontrivial surface states and arising quantum phenomena in two-dimensional systems.</abstract><type>Journal Article</type><journal>The Journal of Physical Chemistry C</journal><volume>125</volume><journalNumber>11</journalNumber><paginationStart>6442</paginationStart><paginationEnd>6448</paginationEnd><publisher>American Chemical Society (ACS)</publisher><placeOfPublication/><isbnPrint/><isbnElectronic/><issnPrint>1932-7447</issnPrint><issnElectronic>1932-7455</issnElectronic><keywords/><publishedDay>25</publishedDay><publishedMonth>3</publishedMonth><publishedYear>2021</publishedYear><publishedDate>2021-03-25</publishedDate><doi>10.1021/acs.jpcc.1c00491</doi><url/><notes/><college>COLLEGE NANME</college><CollegeCode>COLLEGE CODE</CollegeCode><institution>Swansea University</institution><apcterm>Not Required</apcterm><funders/><projectreference/><lastEdited>2025-01-29T15:41:23.5775517</lastEdited><Created>2021-04-25T11:27:25.0091326</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Engineering and Applied Sciences - Chemistry</level></path><authors><author><firstname>Christoph</firstname><surname>Bauer</surname><order>1</order></author><author><firstname>Rostyslav</firstname><surname>Lesyuk</surname><order>2</order></author><author><firstname>Mahdi Samadi</firstname><surname>Khoshkhoo</surname><order>3</order></author><author><firstname>Christian</firstname><surname>Klinke</surname><order>4</order></author><author><firstname>Vladimir</firstname><surname>Lesnyak</surname><order>5</order></author><author><firstname>Alexander</firstname><surname>Eychm&#xFC;ller</surname><order>6</order></author></authors><documents><document><filename>56731__19925__8fc5a1d592e343ec802ed754456d9947.pdf</filename><originalFilename>Manuscript-Bi2Se3-NSs.pdf</originalFilename><uploaded>2021-05-18T12:54:51.0842266</uploaded><type>Output</type><contentLength>623379</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2022-03-12T00:00:00.0000000</embargoDate><copyrightCorrect>true</copyrightCorrect><language>eng</language></document></documents><OutputDurs/></rfc1807>
spelling 2025-01-29T15:41:23.5775517 v2 56731 2021-04-25 Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity c10c44238eabfb203111f88a965f5372 Christian Klinke Christian Klinke true false 2021-04-25 We investigated the colloidal synthesis of Bi2Se3 nanosheets in ethylene glycol with the goal of increasing their lateral dimensions while keeping their thickness within a few nanometers. The influence of proton-donating sulfuric acid was found to be a triggering factor that promoted the lateral growth of up to 10 μm, whereas the thickness remained in the range 10–12 nm. The lateral size distribution was further optimized by size-selective precipitation enabling individual contacting of the nanosheets by electron-beam lithography. Electrical characterization of individually contacted nanosheets revealed a metal-like temperature dependence of the resistivity and values of the specific conductivity in the range of 470 S/cm at room temperature and 880 S/cm at 5.5 K, which is attributed to the surface-induced off-stoichiometry. The presented colloidal nanosheets can potentially serve as a platform for further studies on topologically nontrivial surface states and arising quantum phenomena in two-dimensional systems. Journal Article The Journal of Physical Chemistry C 125 11 6442 6448 American Chemical Society (ACS) 1932-7447 1932-7455 25 3 2021 2021-03-25 10.1021/acs.jpcc.1c00491 COLLEGE NANME COLLEGE CODE Swansea University Not Required 2025-01-29T15:41:23.5775517 2021-04-25T11:27:25.0091326 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemistry Christoph Bauer 1 Rostyslav Lesyuk 2 Mahdi Samadi Khoshkhoo 3 Christian Klinke 4 Vladimir Lesnyak 5 Alexander Eychmüller 6 56731__19925__8fc5a1d592e343ec802ed754456d9947.pdf Manuscript-Bi2Se3-NSs.pdf 2021-05-18T12:54:51.0842266 Output 623379 application/pdf Accepted Manuscript true 2022-03-12T00:00:00.0000000 true eng
title Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
spellingShingle Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
Christian Klinke
title_short Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
title_full Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
title_fullStr Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
title_full_unstemmed Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
title_sort Surface Defines the Properties: Colloidal Bi2Se3 Nanosheets with High Electrical Conductivity
author_id_str_mv c10c44238eabfb203111f88a965f5372
author_id_fullname_str_mv c10c44238eabfb203111f88a965f5372_***_Christian Klinke
author Christian Klinke
author2 Christoph Bauer
Rostyslav Lesyuk
Mahdi Samadi Khoshkhoo
Christian Klinke
Vladimir Lesnyak
Alexander Eychmüller
format Journal article
container_title The Journal of Physical Chemistry C
container_volume 125
container_issue 11
container_start_page 6442
publishDate 2021
institution Swansea University
issn 1932-7447
1932-7455
doi_str_mv 10.1021/acs.jpcc.1c00491
publisher American Chemical Society (ACS)
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 We investigated the colloidal synthesis of Bi2Se3 nanosheets in ethylene glycol with the goal of increasing their lateral dimensions while keeping their thickness within a few nanometers. The influence of proton-donating sulfuric acid was found to be a triggering factor that promoted the lateral growth of up to 10 μm, whereas the thickness remained in the range 10–12 nm. The lateral size distribution was further optimized by size-selective precipitation enabling individual contacting of the nanosheets by electron-beam lithography. Electrical characterization of individually contacted nanosheets revealed a metal-like temperature dependence of the resistivity and values of the specific conductivity in the range of 470 S/cm at room temperature and 880 S/cm at 5.5 K, which is attributed to the surface-induced off-stoichiometry. The presented colloidal nanosheets can potentially serve as a platform for further studies on topologically nontrivial surface states and arising quantum phenomena in two-dimensional systems.
published_date 2021-03-25T04:53:33Z
_version_ 1851367477894709248
score 11.089572

Similar Items