Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes
Liquid-crystalline organic semiconductors exhibit unique properties that make them highly interesting for organic optoelectronic applications. Their optical and electrical anisotropies and the possibility to control the alignment of the liquid-crystalline semiconductor allow not only to optimize cha...
Gespeichert in:
| Veröffentlicht in: | Scientific reports 2018-01, Vol.8 (1), p.699-12, Article 699 |
|---|---|
| Hauptverfasser: | , , , , , , , , , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 12 |
|---|---|
| container_issue | 1 |
| container_start_page | 699 |
| container_title | Scientific reports |
| container_volume | 8 |
| creator | Keum, Chang-Min Liu, Shiyi Al-Shadeedi, Akram Kaphle, Vikash Callens, Michiel Koen Han, Lu Neyts, Kristiaan Zhao, Hongping Gather, Malte C. Bunge, Scott D. Twieg, Robert J. Jakli, Antal Lüssem, Björn |
| description | Liquid-crystalline organic semiconductors exhibit unique properties that make them highly interesting for organic optoelectronic applications. Their optical and electrical anisotropies and the possibility to control the alignment of the liquid-crystalline semiconductor allow not only to optimize charge carrier transport, but to tune the optical property of organic thin-film devices as well. In this study, the molecular orientation in a liquid-crystalline semiconductor film is tuned by a novel blading process as well as by different annealing protocols. The altered alignment is verified by cross-polarized optical microscopy and spectroscopic ellipsometry. It is shown that a change in alignment of the liquid-crystalline semiconductor improves charge transport in single charge carrier devices profoundly. Comparing the current-voltage characteristics of single charge carrier devices with simulations shows an excellent agreement and from this an in-depth understanding of single charge carrier transport in two-terminal devices is obtained. Finally, p-i-n type organic light-emitting diodes (OLEDs) compatible with vacuum processing techniques used in state-of-the-art OLEDs are demonstrated employing liquid-crystalline host matrix in the emission layer. |
| doi_str_mv | 10.1038/s41598-018-19157-9 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_pubme</sourceid><recordid>TN_cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_5768873</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1989590539</sourcerecordid><originalsourceid>FETCH-LOGICAL-c474t-7ff9f18fc6a9eb1ecc794e6c1fdaf0caf2d0d5ced419bb725f6c81c78f963ddf3</originalsourceid><addsrcrecordid>eNp1kc9uFSEUxidGY5vaF3BhSNy4GYVhGMCFSdP4L2nipq4JA4e5NDMwBUbTt_CR5fbW5moiGwj8znfOx9c0Lwl-SzAV73JPmBQtJqIlkjDeyifNaYd71na0654enU-a85xvcF2skz2Rz5uTTlLKGKanza_rLfgwIbPTaQJkdEoeEipJh7zGVJAOFsW1eKNnNPoELlUcggHkA5r97eZta9JdLnqefQBUdvXe-XnJ79EFCvATWch-Ciivuha5mFBMkw7e1OppV1pYfCn7EayPFX3RPHN6znD-sJ813z99vL780l59-_z18uKqNT3vS8udk44IZwYtYSRgDJc9DIY4qx022nUWW2bAVsPjyDvmBiOI4cLJgVrr6Fnz4aC7buMC1kConme1Jr_odKei9urvl-B3aoo_FOODEJxWgTcPAinebpCLWnw2MM86QNyyIlJIJjGjsqKv_0Fv4pZCtbenOMdSDkOlugNlUsy5_vTjMASrfebqkLmqmav7zNVe-tWxjceSPwlXgB6AvN4nl456_1_2N7B4vLs</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1987709966</pqid></control><display><type>article</type><title>Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes</title><source>Nature Free</source><source>DOAJ Directory of Open Access Journals</source><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>PubMed Central</source><source>Alma/SFX Local Collection</source><source>Free Full-Text Journals in Chemistry</source><source>Springer Nature OA Free Journals</source><creator>Keum, Chang-Min ; Liu, Shiyi ; Al-Shadeedi, Akram ; Kaphle, Vikash ; Callens, Michiel Koen ; Han, Lu ; Neyts, Kristiaan ; Zhao, Hongping ; Gather, Malte C. ; Bunge, Scott D. ; Twieg, Robert J. ; Jakli, Antal ; Lüssem, Björn</creator><creatorcontrib>Keum, Chang-Min ; Liu, Shiyi ; Al-Shadeedi, Akram ; Kaphle, Vikash ; Callens, Michiel Koen ; Han, Lu ; Neyts, Kristiaan ; Zhao, Hongping ; Gather, Malte C. ; Bunge, Scott D. ; Twieg, Robert J. ; Jakli, Antal ; Lüssem, Björn</creatorcontrib><description>Liquid-crystalline organic semiconductors exhibit unique properties that make them highly interesting for organic optoelectronic applications. Their optical and electrical anisotropies and the possibility to control the alignment of the liquid-crystalline semiconductor allow not only to optimize charge carrier transport, but to tune the optical property of organic thin-film devices as well. In this study, the molecular orientation in a liquid-crystalline semiconductor film is tuned by a novel blading process as well as by different annealing protocols. The altered alignment is verified by cross-polarized optical microscopy and spectroscopic ellipsometry. It is shown that a change in alignment of the liquid-crystalline semiconductor improves charge transport in single charge carrier devices profoundly. Comparing the current-voltage characteristics of single charge carrier devices with simulations shows an excellent agreement and from this an in-depth understanding of single charge carrier transport in two-terminal devices is obtained. Finally, p-i-n type organic light-emitting diodes (OLEDs) compatible with vacuum processing techniques used in state-of-the-art OLEDs are demonstrated employing liquid-crystalline host matrix in the emission layer.</description><identifier>ISSN: 2045-2322</identifier><identifier>EISSN: 2045-2322</identifier><identifier>DOI: 10.1038/s41598-018-19157-9</identifier><identifier>PMID: 29335503</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>132/122 ; 639/624/1020/1091 ; 639/766/1130/2799 ; Birefringence ; Humanities and Social Sciences ; Light microscopy ; multidisciplinary ; Optical properties ; Organic light emitting diodes ; Science ; Science (multidisciplinary) ; Thin films ; Vacuum</subject><ispartof>Scientific reports, 2018-01, Vol.8 (1), p.699-12, Article 699</ispartof><rights>The Author(s) 2018</rights><rights>2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c474t-7ff9f18fc6a9eb1ecc794e6c1fdaf0caf2d0d5ced419bb725f6c81c78f963ddf3</citedby><cites>FETCH-LOGICAL-c474t-7ff9f18fc6a9eb1ecc794e6c1fdaf0caf2d0d5ced419bb725f6c81c78f963ddf3</cites><orcidid>0000-0002-5592-1531 ; 0000-0002-4857-5562 ; 0000-0001-7072-5937</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768873/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5768873/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,41096,42165,51551,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29335503$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Keum, Chang-Min</creatorcontrib><creatorcontrib>Liu, Shiyi</creatorcontrib><creatorcontrib>Al-Shadeedi, Akram</creatorcontrib><creatorcontrib>Kaphle, Vikash</creatorcontrib><creatorcontrib>Callens, Michiel Koen</creatorcontrib><creatorcontrib>Han, Lu</creatorcontrib><creatorcontrib>Neyts, Kristiaan</creatorcontrib><creatorcontrib>Zhao, Hongping</creatorcontrib><creatorcontrib>Gather, Malte C.</creatorcontrib><creatorcontrib>Bunge, Scott D.</creatorcontrib><creatorcontrib>Twieg, Robert J.</creatorcontrib><creatorcontrib>Jakli, Antal</creatorcontrib><creatorcontrib>Lüssem, Björn</creatorcontrib><title>Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes</title><title>Scientific reports</title><addtitle>Sci Rep</addtitle><addtitle>Sci Rep</addtitle><description>Liquid-crystalline organic semiconductors exhibit unique properties that make them highly interesting for organic optoelectronic applications. Their optical and electrical anisotropies and the possibility to control the alignment of the liquid-crystalline semiconductor allow not only to optimize charge carrier transport, but to tune the optical property of organic thin-film devices as well. In this study, the molecular orientation in a liquid-crystalline semiconductor film is tuned by a novel blading process as well as by different annealing protocols. The altered alignment is verified by cross-polarized optical microscopy and spectroscopic ellipsometry. It is shown that a change in alignment of the liquid-crystalline semiconductor improves charge transport in single charge carrier devices profoundly. Comparing the current-voltage characteristics of single charge carrier devices with simulations shows an excellent agreement and from this an in-depth understanding of single charge carrier transport in two-terminal devices is obtained. Finally, p-i-n type organic light-emitting diodes (OLEDs) compatible with vacuum processing techniques used in state-of-the-art OLEDs are demonstrated employing liquid-crystalline host matrix in the emission layer.</description><subject>132/122</subject><subject>639/624/1020/1091</subject><subject>639/766/1130/2799</subject><subject>Birefringence</subject><subject>Humanities and Social Sciences</subject><subject>Light microscopy</subject><subject>multidisciplinary</subject><subject>Optical properties</subject><subject>Organic light emitting diodes</subject><subject>Science</subject><subject>Science (multidisciplinary)</subject><subject>Thin films</subject><subject>Vacuum</subject><issn>2045-2322</issn><issn>2045-2322</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><sourceid>BENPR</sourceid><recordid>eNp1kc9uFSEUxidGY5vaF3BhSNy4GYVhGMCFSdP4L2nipq4JA4e5NDMwBUbTt_CR5fbW5moiGwj8znfOx9c0Lwl-SzAV73JPmBQtJqIlkjDeyifNaYd71na0654enU-a85xvcF2skz2Rz5uTTlLKGKanza_rLfgwIbPTaQJkdEoeEipJh7zGVJAOFsW1eKNnNPoELlUcggHkA5r97eZta9JdLnqefQBUdvXe-XnJ79EFCvATWch-Ciivuha5mFBMkw7e1OppV1pYfCn7EayPFX3RPHN6znD-sJ813z99vL780l59-_z18uKqNT3vS8udk44IZwYtYSRgDJc9DIY4qx022nUWW2bAVsPjyDvmBiOI4cLJgVrr6Fnz4aC7buMC1kConme1Jr_odKei9urvl-B3aoo_FOODEJxWgTcPAinebpCLWnw2MM86QNyyIlJIJjGjsqKv_0Fv4pZCtbenOMdSDkOlugNlUsy5_vTjMASrfebqkLmqmav7zNVe-tWxjceSPwlXgB6AvN4nl456_1_2N7B4vLs</recordid><startdate>20180115</startdate><enddate>20180115</enddate><creator>Keum, Chang-Min</creator><creator>Liu, Shiyi</creator><creator>Al-Shadeedi, Akram</creator><creator>Kaphle, Vikash</creator><creator>Callens, Michiel Koen</creator><creator>Han, Lu</creator><creator>Neyts, Kristiaan</creator><creator>Zhao, Hongping</creator><creator>Gather, Malte C.</creator><creator>Bunge, Scott D.</creator><creator>Twieg, Robert J.</creator><creator>Jakli, Antal</creator><creator>Lüssem, Björn</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><scope>C6C</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7X7</scope><scope>7XB</scope><scope>88A</scope><scope>88E</scope><scope>88I</scope><scope>8FE</scope><scope>8FH</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>GNUQQ</scope><scope>HCIFZ</scope><scope>K9.</scope><scope>LK8</scope><scope>M0S</scope><scope>M1P</scope><scope>M2P</scope><scope>M7P</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>Q9U</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-5592-1531</orcidid><orcidid>https://orcid.org/0000-0002-4857-5562</orcidid><orcidid>https://orcid.org/0000-0001-7072-5937</orcidid></search><sort><creationdate>20180115</creationdate><title>Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes</title><author>Keum, Chang-Min ; Liu, Shiyi ; Al-Shadeedi, Akram ; Kaphle, Vikash ; Callens, Michiel Koen ; Han, Lu ; Neyts, Kristiaan ; Zhao, Hongping ; Gather, Malte C. ; Bunge, Scott D. ; Twieg, Robert J. ; Jakli, Antal ; Lüssem, Björn</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c474t-7ff9f18fc6a9eb1ecc794e6c1fdaf0caf2d0d5ced419bb725f6c81c78f963ddf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>132/122</topic><topic>639/624/1020/1091</topic><topic>639/766/1130/2799</topic><topic>Birefringence</topic><topic>Humanities and Social Sciences</topic><topic>Light microscopy</topic><topic>multidisciplinary</topic><topic>Optical properties</topic><topic>Organic light emitting diodes</topic><topic>Science</topic><topic>Science (multidisciplinary)</topic><topic>Thin films</topic><topic>Vacuum</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Keum, Chang-Min</creatorcontrib><creatorcontrib>Liu, Shiyi</creatorcontrib><creatorcontrib>Al-Shadeedi, Akram</creatorcontrib><creatorcontrib>Kaphle, Vikash</creatorcontrib><creatorcontrib>Callens, Michiel Koen</creatorcontrib><creatorcontrib>Han, Lu</creatorcontrib><creatorcontrib>Neyts, Kristiaan</creatorcontrib><creatorcontrib>Zhao, Hongping</creatorcontrib><creatorcontrib>Gather, Malte C.</creatorcontrib><creatorcontrib>Bunge, Scott D.</creatorcontrib><creatorcontrib>Twieg, Robert J.</creatorcontrib><creatorcontrib>Jakli, Antal</creatorcontrib><creatorcontrib>Lüssem, Björn</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Biology Database (Alumni Edition)</collection><collection>Medical Database (Alumni Edition)</collection><collection>Science Database (Alumni Edition)</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central Essentials</collection><collection>Biological Science Collection</collection><collection>ProQuest Central</collection><collection>Natural Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Central Student</collection><collection>SciTech Premium Collection</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>ProQuest Biological Science Collection</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Science Database</collection><collection>Biological Science Database</collection><collection>Publicly Available Content Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central Basic</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Scientific reports</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Keum, Chang-Min</au><au>Liu, Shiyi</au><au>Al-Shadeedi, Akram</au><au>Kaphle, Vikash</au><au>Callens, Michiel Koen</au><au>Han, Lu</au><au>Neyts, Kristiaan</au><au>Zhao, Hongping</au><au>Gather, Malte C.</au><au>Bunge, Scott D.</au><au>Twieg, Robert J.</au><au>Jakli, Antal</au><au>Lüssem, Björn</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes</atitle><jtitle>Scientific reports</jtitle><stitle>Sci Rep</stitle><addtitle>Sci Rep</addtitle><date>2018-01-15</date><risdate>2018</risdate><volume>8</volume><issue>1</issue><spage>699</spage><epage>12</epage><pages>699-12</pages><artnum>699</artnum><issn>2045-2322</issn><eissn>2045-2322</eissn><abstract>Liquid-crystalline organic semiconductors exhibit unique properties that make them highly interesting for organic optoelectronic applications. Their optical and electrical anisotropies and the possibility to control the alignment of the liquid-crystalline semiconductor allow not only to optimize charge carrier transport, but to tune the optical property of organic thin-film devices as well. In this study, the molecular orientation in a liquid-crystalline semiconductor film is tuned by a novel blading process as well as by different annealing protocols. The altered alignment is verified by cross-polarized optical microscopy and spectroscopic ellipsometry. It is shown that a change in alignment of the liquid-crystalline semiconductor improves charge transport in single charge carrier devices profoundly. Comparing the current-voltage characteristics of single charge carrier devices with simulations shows an excellent agreement and from this an in-depth understanding of single charge carrier transport in two-terminal devices is obtained. Finally, p-i-n type organic light-emitting diodes (OLEDs) compatible with vacuum processing techniques used in state-of-the-art OLEDs are demonstrated employing liquid-crystalline host matrix in the emission layer.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>29335503</pmid><doi>10.1038/s41598-018-19157-9</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-5592-1531</orcidid><orcidid>https://orcid.org/0000-0002-4857-5562</orcidid><orcidid>https://orcid.org/0000-0001-7072-5937</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2045-2322 |
| ispartof | Scientific reports, 2018-01, Vol.8 (1), p.699-12, Article 699 |
| issn | 2045-2322 2045-2322 |
| language | eng |
| recordid | cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_5768873 |
| source | Nature Free; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central; Alma/SFX Local Collection; Free Full-Text Journals in Chemistry; Springer Nature OA Free Journals |
| subjects | 132/122 639/624/1020/1091 639/766/1130/2799 Birefringence Humanities and Social Sciences Light microscopy multidisciplinary Optical properties Organic light emitting diodes Science Science (multidisciplinary) Thin films Vacuum |
| title | Tuning charge carrier transport and optical birefringence in liquid-crystalline thin films: A new design space for organic light-emitting diodes |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-06T00%3A30%3A04IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_pubme&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Tuning%20charge%20carrier%20transport%20and%20optical%20birefringence%20in%20liquid-crystalline%20thin%20films:%20A%20new%20design%20space%20for%20organic%20light-emitting%20diodes&rft.jtitle=Scientific%20reports&rft.au=Keum,%20Chang-Min&rft.date=2018-01-15&rft.volume=8&rft.issue=1&rft.spage=699&rft.epage=12&rft.pages=699-12&rft.artnum=699&rft.issn=2045-2322&rft.eissn=2045-2322&rft_id=info:doi/10.1038/s41598-018-19157-9&rft_dat=%3Cproquest_pubme%3E1989590539%3C/proquest_pubme%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1987709966&rft_id=info:pmid/29335503&rfr_iscdi=true |