Anisotropies in the electrical properties of rod-like aggregates of liquid crystalline phthalocyanines: Direct current conductivities and field-effect mobilities
The direct current (dc) conductivities and organic field-effect transistor (OFET) characteristics of a class of octa-substituted liquid crystalline (discotic mesophase) phthalocyanines (Pcs) are discussed. These molecules self-organize into columnar aggregates with large coherence lengths (up to app...
Gespeichert in:
Veröffentlicht in: | Journal of materials research 2004-07, Vol.19 (7), p.2087-2099 |
---|---|
Hauptverfasser: | , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
container_end_page | 2099 |
---|---|
container_issue | 7 |
container_start_page | 2087 |
container_title | Journal of materials research |
container_volume | 19 |
creator | Donley, Carrie L. Zangmeister, R.A.P. Xia, Wei Minch, Britt Drager, Anthony Cherian, Samir K. LaRussa, Lynn Kippelen, Bernard Domercq, Benoit Mathine, David L. O’Brien, David F. Armstrong, Neal R. |
description | The direct current (dc) conductivities and organic field-effect transistor (OFET) characteristics of a class of octa-substituted liquid crystalline (discotic mesophase) phthalocyanines (Pcs) are discussed. These molecules self-organize into columnar aggregates with large coherence lengths (up to approximately 300 nm). Langmuir–Blodgett films of these molecules were horizontally transferred to either interdigitated microelectrodes (IME) or OFET substrates, so that current flow could be measured either parallel or perpendicular to the column axis. Twenty-eight bilayer films of these Pcs on the IME substrates showed anisotropies in dc conductivity up to 50:1, whereas similar Pc films showed anisotropies in field effect mobilities of approximately 10:1, for a variety of W/L ratios (source/drain dimensions and spacing). Field-effect mobilities of 1 to 5 × 10-6 cm2·V-1·s-1 were determined from OFET measurements, along the Pc column axis, whereas charge mobilities measured from the space charge limited current regime on the IME substrates were in the range of 10-4 cm2·V-1·s-1. Conductive tip atomic force microscopy measurements on the apprximately 500-nm length scale showed that the conductivity anisotropy can be as high as 1000:1 when the Pc columns are intimately contacted to an adjacent Au bond pad. |
doi_str_mv | 10.1557/JMR.2004.0278 |
format | Article |
fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_28302843</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><cupid>10_1557_JMR_2004_0278</cupid><sourcerecordid>28302843</sourcerecordid><originalsourceid>FETCH-LOGICAL-c414t-449825fe2398e01f9560a846861d7102b72ebf2c69daf1ef114aa85f2ace5bf83</originalsourceid><addsrcrecordid>eNqNkUFv1DAQhS1EJZaWI3efuGVrO3bicKsKLVStuiC4cLEcZ7zr1mtvbQexP4d_StKt6AmJ02jmfXqjmYfQW0qWVIj29Orm65IRwpeEtfIFWjDCeSVq1rxECyIlr1hH-Sv0Ouc7QqggLV-g32fB5VhS3DnI2AVcNoDBgynJGe3xblIglVmMFqc4VN7dA9brdYK1Loexdw-jG7BJ-1y09y4A3m3KRvto9jpMbX6PP7g0mWIzpgRhqjEMoynup3v01mHA1oEfKrB25raxd_5RO0FHVvsMb57qMfp-8fHb-afq-vby8_nZdWU45aXivJNMWGB1J4FQ24mGaMkb2dChpYT1LYPeMtN0g7YULKVcayks0wZEb2V9jN4dfKeTH0bIRW1dNuC9DhDHrJisCZO8_g-QdW1HZ7A6gCbFnBNYtUtuq9NeUaLmxNSUmJoTU3Niz7zLBX79hXW6V01bt0I1l1_U6gehq1XXKDrxp0_-etsnN6xB3cUxhelL_9jwB1-4q58</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>28297913</pqid></control><display><type>article</type><title>Anisotropies in the electrical properties of rod-like aggregates of liquid crystalline phthalocyanines: Direct current conductivities and field-effect mobilities</title><source>SpringerNature Journals</source><creator>Donley, Carrie L. ; Zangmeister, R.A.P. ; Xia, Wei ; Minch, Britt ; Drager, Anthony ; Cherian, Samir K. ; LaRussa, Lynn ; Kippelen, Bernard ; Domercq, Benoit ; Mathine, David L. ; O’Brien, David F. ; Armstrong, Neal R.</creator><creatorcontrib>Donley, Carrie L. ; Zangmeister, R.A.P. ; Xia, Wei ; Minch, Britt ; Drager, Anthony ; Cherian, Samir K. ; LaRussa, Lynn ; Kippelen, Bernard ; Domercq, Benoit ; Mathine, David L. ; O’Brien, David F. ; Armstrong, Neal R.</creatorcontrib><description>The direct current (dc) conductivities and organic field-effect transistor (OFET) characteristics of a class of octa-substituted liquid crystalline (discotic mesophase) phthalocyanines (Pcs) are discussed. These molecules self-organize into columnar aggregates with large coherence lengths (up to approximately 300 nm). Langmuir–Blodgett films of these molecules were horizontally transferred to either interdigitated microelectrodes (IME) or OFET substrates, so that current flow could be measured either parallel or perpendicular to the column axis. Twenty-eight bilayer films of these Pcs on the IME substrates showed anisotropies in dc conductivity up to 50:1, whereas similar Pc films showed anisotropies in field effect mobilities of approximately 10:1, for a variety of W/L ratios (source/drain dimensions and spacing). Field-effect mobilities of 1 to 5 × 10-6 cm2·V-1·s-1 were determined from OFET measurements, along the Pc column axis, whereas charge mobilities measured from the space charge limited current regime on the IME substrates were in the range of 10-4 cm2·V-1·s-1. Conductive tip atomic force microscopy measurements on the apprximately 500-nm length scale showed that the conductivity anisotropy can be as high as 1000:1 when the Pc columns are intimately contacted to an adjacent Au bond pad.</description><identifier>ISSN: 0884-2914</identifier><identifier>EISSN: 2044-5326</identifier><identifier>DOI: 10.1557/JMR.2004.0278</identifier><language>eng</language><publisher>New York, USA: Cambridge University Press</publisher><subject>Electrical properties ; Organic ; Self-assembly</subject><ispartof>Journal of materials research, 2004-07, Vol.19 (7), p.2087-2099</ispartof><rights>Copyright © Materials Research Society 2004</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c414t-449825fe2398e01f9560a846861d7102b72ebf2c69daf1ef114aa85f2ace5bf83</citedby><cites>FETCH-LOGICAL-c414t-449825fe2398e01f9560a846861d7102b72ebf2c69daf1ef114aa85f2ace5bf83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Donley, Carrie L.</creatorcontrib><creatorcontrib>Zangmeister, R.A.P.</creatorcontrib><creatorcontrib>Xia, Wei</creatorcontrib><creatorcontrib>Minch, Britt</creatorcontrib><creatorcontrib>Drager, Anthony</creatorcontrib><creatorcontrib>Cherian, Samir K.</creatorcontrib><creatorcontrib>LaRussa, Lynn</creatorcontrib><creatorcontrib>Kippelen, Bernard</creatorcontrib><creatorcontrib>Domercq, Benoit</creatorcontrib><creatorcontrib>Mathine, David L.</creatorcontrib><creatorcontrib>O’Brien, David F.</creatorcontrib><creatorcontrib>Armstrong, Neal R.</creatorcontrib><title>Anisotropies in the electrical properties of rod-like aggregates of liquid crystalline phthalocyanines: Direct current conductivities and field-effect mobilities</title><title>Journal of materials research</title><addtitle>J. Mater. Res</addtitle><description>The direct current (dc) conductivities and organic field-effect transistor (OFET) characteristics of a class of octa-substituted liquid crystalline (discotic mesophase) phthalocyanines (Pcs) are discussed. These molecules self-organize into columnar aggregates with large coherence lengths (up to approximately 300 nm). Langmuir–Blodgett films of these molecules were horizontally transferred to either interdigitated microelectrodes (IME) or OFET substrates, so that current flow could be measured either parallel or perpendicular to the column axis. Twenty-eight bilayer films of these Pcs on the IME substrates showed anisotropies in dc conductivity up to 50:1, whereas similar Pc films showed anisotropies in field effect mobilities of approximately 10:1, for a variety of W/L ratios (source/drain dimensions and spacing). Field-effect mobilities of 1 to 5 × 10-6 cm2·V-1·s-1 were determined from OFET measurements, along the Pc column axis, whereas charge mobilities measured from the space charge limited current regime on the IME substrates were in the range of 10-4 cm2·V-1·s-1. Conductive tip atomic force microscopy measurements on the apprximately 500-nm length scale showed that the conductivity anisotropy can be as high as 1000:1 when the Pc columns are intimately contacted to an adjacent Au bond pad.</description><subject>Electrical properties</subject><subject>Organic</subject><subject>Self-assembly</subject><issn>0884-2914</issn><issn>2044-5326</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqNkUFv1DAQhS1EJZaWI3efuGVrO3bicKsKLVStuiC4cLEcZ7zr1mtvbQexP4d_StKt6AmJ02jmfXqjmYfQW0qWVIj29Orm65IRwpeEtfIFWjDCeSVq1rxECyIlr1hH-Sv0Ouc7QqggLV-g32fB5VhS3DnI2AVcNoDBgynJGe3xblIglVmMFqc4VN7dA9brdYK1Loexdw-jG7BJ-1y09y4A3m3KRvto9jpMbX6PP7g0mWIzpgRhqjEMoynup3v01mHA1oEfKrB25raxd_5RO0FHVvsMb57qMfp-8fHb-afq-vby8_nZdWU45aXivJNMWGB1J4FQ24mGaMkb2dChpYT1LYPeMtN0g7YULKVcayks0wZEb2V9jN4dfKeTH0bIRW1dNuC9DhDHrJisCZO8_g-QdW1HZ7A6gCbFnBNYtUtuq9NeUaLmxNSUmJoTU3Niz7zLBX79hXW6V01bt0I1l1_U6gehq1XXKDrxp0_-etsnN6xB3cUxhelL_9jwB1-4q58</recordid><startdate>20040701</startdate><enddate>20040701</enddate><creator>Donley, Carrie L.</creator><creator>Zangmeister, R.A.P.</creator><creator>Xia, Wei</creator><creator>Minch, Britt</creator><creator>Drager, Anthony</creator><creator>Cherian, Samir K.</creator><creator>LaRussa, Lynn</creator><creator>Kippelen, Bernard</creator><creator>Domercq, Benoit</creator><creator>Mathine, David L.</creator><creator>O’Brien, David F.</creator><creator>Armstrong, Neal R.</creator><general>Cambridge University Press</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7SP</scope><scope>7TB</scope><scope>7U5</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20040701</creationdate><title>Anisotropies in the electrical properties of rod-like aggregates of liquid crystalline phthalocyanines: Direct current conductivities and field-effect mobilities</title><author>Donley, Carrie L. ; Zangmeister, R.A.P. ; Xia, Wei ; Minch, Britt ; Drager, Anthony ; Cherian, Samir K. ; LaRussa, Lynn ; Kippelen, Bernard ; Domercq, Benoit ; Mathine, David L. ; O’Brien, David F. ; Armstrong, Neal R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c414t-449825fe2398e01f9560a846861d7102b72ebf2c69daf1ef114aa85f2ace5bf83</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Electrical properties</topic><topic>Organic</topic><topic>Self-assembly</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Donley, Carrie L.</creatorcontrib><creatorcontrib>Zangmeister, R.A.P.</creatorcontrib><creatorcontrib>Xia, Wei</creatorcontrib><creatorcontrib>Minch, Britt</creatorcontrib><creatorcontrib>Drager, Anthony</creatorcontrib><creatorcontrib>Cherian, Samir K.</creatorcontrib><creatorcontrib>LaRussa, Lynn</creatorcontrib><creatorcontrib>Kippelen, Bernard</creatorcontrib><creatorcontrib>Domercq, Benoit</creatorcontrib><creatorcontrib>Mathine, David L.</creatorcontrib><creatorcontrib>O’Brien, David F.</creatorcontrib><creatorcontrib>Armstrong, Neal R.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Electronics & Communications Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of materials research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Donley, Carrie L.</au><au>Zangmeister, R.A.P.</au><au>Xia, Wei</au><au>Minch, Britt</au><au>Drager, Anthony</au><au>Cherian, Samir K.</au><au>LaRussa, Lynn</au><au>Kippelen, Bernard</au><au>Domercq, Benoit</au><au>Mathine, David L.</au><au>O’Brien, David F.</au><au>Armstrong, Neal R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Anisotropies in the electrical properties of rod-like aggregates of liquid crystalline phthalocyanines: Direct current conductivities and field-effect mobilities</atitle><jtitle>Journal of materials research</jtitle><addtitle>J. Mater. Res</addtitle><date>2004-07-01</date><risdate>2004</risdate><volume>19</volume><issue>7</issue><spage>2087</spage><epage>2099</epage><pages>2087-2099</pages><issn>0884-2914</issn><eissn>2044-5326</eissn><abstract>The direct current (dc) conductivities and organic field-effect transistor (OFET) characteristics of a class of octa-substituted liquid crystalline (discotic mesophase) phthalocyanines (Pcs) are discussed. These molecules self-organize into columnar aggregates with large coherence lengths (up to approximately 300 nm). Langmuir–Blodgett films of these molecules were horizontally transferred to either interdigitated microelectrodes (IME) or OFET substrates, so that current flow could be measured either parallel or perpendicular to the column axis. Twenty-eight bilayer films of these Pcs on the IME substrates showed anisotropies in dc conductivity up to 50:1, whereas similar Pc films showed anisotropies in field effect mobilities of approximately 10:1, for a variety of W/L ratios (source/drain dimensions and spacing). Field-effect mobilities of 1 to 5 × 10-6 cm2·V-1·s-1 were determined from OFET measurements, along the Pc column axis, whereas charge mobilities measured from the space charge limited current regime on the IME substrates were in the range of 10-4 cm2·V-1·s-1. Conductive tip atomic force microscopy measurements on the apprximately 500-nm length scale showed that the conductivity anisotropy can be as high as 1000:1 when the Pc columns are intimately contacted to an adjacent Au bond pad.</abstract><cop>New York, USA</cop><pub>Cambridge University Press</pub><doi>10.1557/JMR.2004.0278</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
fulltext | fulltext |
identifier | ISSN: 0884-2914 |
ispartof | Journal of materials research, 2004-07, Vol.19 (7), p.2087-2099 |
issn | 0884-2914 2044-5326 |
language | eng |
recordid | cdi_proquest_miscellaneous_28302843 |
source | SpringerNature Journals |
subjects | Electrical properties Organic Self-assembly |
title | Anisotropies in the electrical properties of rod-like aggregates of liquid crystalline phthalocyanines: Direct current conductivities and field-effect mobilities |
url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-27T13%3A34%3A49IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Anisotropies%20in%20the%20electrical%20properties%20of%20rod-like%20aggregates%20of%20liquid%20crystalline%20phthalocyanines:%20Direct%20current%20conductivities%20and%20field-effect%20mobilities&rft.jtitle=Journal%20of%20materials%20research&rft.au=Donley,%20Carrie%20L.&rft.date=2004-07-01&rft.volume=19&rft.issue=7&rft.spage=2087&rft.epage=2099&rft.pages=2087-2099&rft.issn=0884-2914&rft.eissn=2044-5326&rft_id=info:doi/10.1557/JMR.2004.0278&rft_dat=%3Cproquest_cross%3E28302843%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=28297913&rft_id=info:pmid/&rft_cupid=10_1557_JMR_2004_0278&rfr_iscdi=true |