No Cover Image

Journal article 954 views 304 downloads

Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse

Menghua Cui, Yuzheng Guo Orcid Logo, Yiming Zhu, Haining Liu, Wen Wen, Juanxia Wu, Linxiu Cheng, Qingdao Zeng, Liming Xie

The Journal of Physical Chemistry C, Volume: 122, Issue: 13, Pages: 7551 - 7556

Swansea University Author: Yuzheng Guo Orcid Logo

Check full text

DOI (Published version): 10.1021/acs.jpcc.8b01408

Abstract

Charge-transfer (CT) complexes with unique intermolecular electronic transitions have attracted broad interest and hold great potential in optoelectronic applications. Here, we report a new family of two-dimensional graphene-organic molecule CT complexes. Density functional theory (DFT) calculation...

Full description

Published in: The Journal of Physical Chemistry C
ISSN: 1932-7447 1932-7455
Published: 2018
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa39464
Tags: Add Tag
No Tags, Be the first to tag this record!
first_indexed 2018-04-18T13:36:33Z
last_indexed 2018-06-04T19:01:08Z
id cronfa39464
recordtype SURis
fullrecord <?xml version="1.0"?><rfc1807><datestamp>2018-06-04T14:49:49.0032661</datestamp><bib-version>v2</bib-version><id>39464</id><entry>2018-04-18</entry><title>Graphene&#x2013;Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse</title><swanseaauthors><author><sid>2c285ab01f88f7ecb25a3aacabee52ea</sid><ORCID>0000-0003-2656-0340</ORCID><firstname>Yuzheng</firstname><surname>Guo</surname><name>Yuzheng Guo</name><active>true</active><ethesisStudent>false</ethesisStudent></author></swanseaauthors><date>2018-04-18</date><deptcode>GENG</deptcode><abstract>Charge-transfer (CT) complexes with unique intermolecular electronic transitions have attracted broad interest and hold great potential in optoelectronic applications. Here, we report a new family of two-dimensional graphene-organic molecule CT complexes. Density functional theory (DFT) calculation has revealed low-energy CT bands in the near-infrared (NIR) region up to 2000 nm for graphene-TCNQ (tetracyanoquinodimethane), graphene-F4TCNQ (2,3,5,6-Tetrafluoro-tetracyanoquinodimethane) and graphene-TCOQ (tetrachloro-o-benzoquinone) complexes. Raman and electrical measurements have confirmed a partial charge transfer between graphene and the molecules at the ground state. CT excitations have been calculated by DFT and verified by optoelectronic measurements. The graphene&#x2013;organic CT complexes have shown a broadband photoresponse from the visible to NIR range, attributed to the intermolecular electronic transitions. Further, the photoresponsivity (up to 103 A/W) suggests a high photoelectrical gain arising from the photogating effect at the graphene/molecule interface. At last, the photoresponse property of the graphene&#x2013;organic CT complexes can be tuned by electrical gating of graphene.</abstract><type>Journal Article</type><journal>The Journal of Physical Chemistry C</journal><volume>122</volume><journalNumber>13</journalNumber><paginationStart>7551</paginationStart><paginationEnd>7556</paginationEnd><publisher/><issnPrint>1932-7447</issnPrint><issnElectronic>1932-7455</issnElectronic><keywords/><publishedDay>5</publishedDay><publishedMonth>4</publishedMonth><publishedYear>2018</publishedYear><publishedDate>2018-04-05</publishedDate><doi>10.1021/acs.jpcc.8b01408</doi><url/><notes/><college>COLLEGE NANME</college><department>General Engineering</department><CollegeCode>COLLEGE CODE</CollegeCode><DepartmentCode>GENG</DepartmentCode><institution>Swansea University</institution><apcterm/><lastEdited>2018-06-04T14:49:49.0032661</lastEdited><Created>2018-04-18T09:31:23.0548707</Created><path><level id="1">Faculty of Science and Engineering</level><level id="2">School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering</level></path><authors><author><firstname>Menghua</firstname><surname>Cui</surname><order>1</order></author><author><firstname>Yuzheng</firstname><surname>Guo</surname><orcid>0000-0003-2656-0340</orcid><order>2</order></author><author><firstname>Yiming</firstname><surname>Zhu</surname><order>3</order></author><author><firstname>Haining</firstname><surname>Liu</surname><order>4</order></author><author><firstname>Wen</firstname><surname>Wen</surname><order>5</order></author><author><firstname>Juanxia</firstname><surname>Wu</surname><order>6</order></author><author><firstname>Linxiu</firstname><surname>Cheng</surname><order>7</order></author><author><firstname>Qingdao</firstname><surname>Zeng</surname><order>8</order></author><author><firstname>Liming</firstname><surname>Xie</surname><order>9</order></author></authors><documents><document><filename>0039464-30042018122012.pdf</filename><originalFilename>cui2018.pdf</originalFilename><uploaded>2018-04-30T12:20:12.3870000</uploaded><type>Output</type><contentLength>1226655</contentLength><contentType>application/pdf</contentType><version>Accepted Manuscript</version><cronfaStatus>true</cronfaStatus><embargoDate>2019-03-15T00:00:00.0000000</embargoDate><copyrightCorrect>true</copyrightCorrect><language>eng</language></document></documents><OutputDurs/></rfc1807>
spelling 2018-06-04T14:49:49.0032661 v2 39464 2018-04-18 Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse 2c285ab01f88f7ecb25a3aacabee52ea 0000-0003-2656-0340 Yuzheng Guo Yuzheng Guo true false 2018-04-18 GENG Charge-transfer (CT) complexes with unique intermolecular electronic transitions have attracted broad interest and hold great potential in optoelectronic applications. Here, we report a new family of two-dimensional graphene-organic molecule CT complexes. Density functional theory (DFT) calculation has revealed low-energy CT bands in the near-infrared (NIR) region up to 2000 nm for graphene-TCNQ (tetracyanoquinodimethane), graphene-F4TCNQ (2,3,5,6-Tetrafluoro-tetracyanoquinodimethane) and graphene-TCOQ (tetrachloro-o-benzoquinone) complexes. Raman and electrical measurements have confirmed a partial charge transfer between graphene and the molecules at the ground state. CT excitations have been calculated by DFT and verified by optoelectronic measurements. The graphene–organic CT complexes have shown a broadband photoresponse from the visible to NIR range, attributed to the intermolecular electronic transitions. Further, the photoresponsivity (up to 103 A/W) suggests a high photoelectrical gain arising from the photogating effect at the graphene/molecule interface. At last, the photoresponse property of the graphene–organic CT complexes can be tuned by electrical gating of graphene. Journal Article The Journal of Physical Chemistry C 122 13 7551 7556 1932-7447 1932-7455 5 4 2018 2018-04-05 10.1021/acs.jpcc.8b01408 COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2018-06-04T14:49:49.0032661 2018-04-18T09:31:23.0548707 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering Menghua Cui 1 Yuzheng Guo 0000-0003-2656-0340 2 Yiming Zhu 3 Haining Liu 4 Wen Wen 5 Juanxia Wu 6 Linxiu Cheng 7 Qingdao Zeng 8 Liming Xie 9 0039464-30042018122012.pdf cui2018.pdf 2018-04-30T12:20:12.3870000 Output 1226655 application/pdf Accepted Manuscript true 2019-03-15T00:00:00.0000000 true eng
title Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
spellingShingle Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
Yuzheng Guo
title_short Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
title_full Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
title_fullStr Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
title_full_unstemmed Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
title_sort Graphene–Organic Two-Dimensional Charge-Transfer Complexes: Intermolecular Electronic Transitions and Broadband Near-Infrared Photoresponse
author_id_str_mv 2c285ab01f88f7ecb25a3aacabee52ea
author_id_fullname_str_mv 2c285ab01f88f7ecb25a3aacabee52ea_***_Yuzheng Guo
author Yuzheng Guo
author2 Menghua Cui
Yuzheng Guo
Yiming Zhu
Haining Liu
Wen Wen
Juanxia Wu
Linxiu Cheng
Qingdao Zeng
Liming Xie
format Journal article
container_title The Journal of Physical Chemistry C
container_volume 122
container_issue 13
container_start_page 7551
publishDate 2018
institution Swansea University
issn 1932-7447
1932-7455
doi_str_mv 10.1021/acs.jpcc.8b01408
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 - General Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering
document_store_str 1
active_str 0
description Charge-transfer (CT) complexes with unique intermolecular electronic transitions have attracted broad interest and hold great potential in optoelectronic applications. Here, we report a new family of two-dimensional graphene-organic molecule CT complexes. Density functional theory (DFT) calculation has revealed low-energy CT bands in the near-infrared (NIR) region up to 2000 nm for graphene-TCNQ (tetracyanoquinodimethane), graphene-F4TCNQ (2,3,5,6-Tetrafluoro-tetracyanoquinodimethane) and graphene-TCOQ (tetrachloro-o-benzoquinone) complexes. Raman and electrical measurements have confirmed a partial charge transfer between graphene and the molecules at the ground state. CT excitations have been calculated by DFT and verified by optoelectronic measurements. The graphene–organic CT complexes have shown a broadband photoresponse from the visible to NIR range, attributed to the intermolecular electronic transitions. Further, the photoresponsivity (up to 103 A/W) suggests a high photoelectrical gain arising from the photogating effect at the graphene/molecule interface. At last, the photoresponse property of the graphene–organic CT complexes can be tuned by electrical gating of graphene.
published_date 2018-04-05T03:50:07Z
_version_ 1763752445144465408
score 11.012678

Similar Items