Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes
Three electron transport type host materials, 1DBF-2CNCZ , 2DBF-2CNCZ and 4DBF-2CNCZ , for blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) were synthesized and characterized. The host materials shared dibenzofuran, benzonitrile and dicyanocarbazole units as...
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| Veröffentlicht in: | Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2020-05, Vol.8 (17), p.5832-5838 |
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| container_issue | 17 |
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| container_title | Journal of materials chemistry. C, Materials for optical and electronic devices |
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| creator | Byeon, Sung Yong Lee, Kyung Hyung Lee, Jun Yeob |
| description | Three electron transport type host materials,
1DBF-2CNCZ
,
2DBF-2CNCZ
and
4DBF-2CNCZ
, for blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) were synthesized and characterized. The host materials shared dibenzofuran, benzonitrile and dicyanocarbazole units as the electron transport moieties and had an isomeric molecular structure with different substitution positions of the dibenzofuran moiety. They showed a high triplet energy of above 3.0 eV with a twisted molecular structure and were applied as the electron transport type hosts in the mixed host system with a hole transport type
mCBP
host for blue TADF OLEDs. The blue TADF OLEDs developed using the
1DBF-2CNCZ
host demonstrated a high EQE of over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
with a mixed host composition of
mCBP
:
1DBF-2CNCZ
(25 : 75).
The electron transport host materials derived from dibenzofuran, benzonitrile and dicyanocarbazole units showed high triplet energy above 3.0 eV, high efficiency over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
. |
| doi_str_mv | 10.1039/c9tc06978j |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_rsc_p</sourceid><recordid>TN_cdi_proquest_journals_2399070494</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2399070494</sourcerecordid><originalsourceid>FETCH-LOGICAL-c344t-71c786eade9bdde9be6ff8be55d29ebaf6428c854100d12e4916e1ea752e51db3</originalsourceid><addsrcrecordid>eNp9kU1rHDEMhofSQEOaS-4Fl94K09rz7WO7pF8EcknOg8eWd7147KmsXZj8tf65erslvdUHSViPJMtvUdwI_kHwWn7UkjTvZD_sXxSXFW952bd18_I5rrpXxXVKe57PILqhk5fFr88QnmJwhM4DU8Ew4_SqQtQKJ_UU86UBdEcwDDxowhgYoQppiUiM1gXYLiZis6KMKZ-YjcjcvGA81Rg4Og3MOwvkZmAusMkfgNEOcFber0xpcsdcfGK9WrO3_hARkoZALOJWBadzg-2OSpgdkQvb_MZoIL0uLmyeCNd__VXx-OX2YfOtvLv_-n3z6a7UddNQ2QvdDx0oA3IyJwOdtcMEbWsqCZOyXVMNemgbwbkRFTRSdCBA5Q-DVpipvirenfvmpX4eING4jwcMeeRY1VLynjeyydT7M6UxpoRgxwXdrHAdBR9P-owb-bD5o8-PDL85w5j0M_dPv5x_-7_8uBhb_wYtMZ9x</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2399070494</pqid></control><display><type>article</type><title>Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes</title><source>Royal Society Of Chemistry Journals 2008-</source><creator>Byeon, Sung Yong ; Lee, Kyung Hyung ; Lee, Jun Yeob</creator><creatorcontrib>Byeon, Sung Yong ; Lee, Kyung Hyung ; Lee, Jun Yeob</creatorcontrib><description>Three electron transport type host materials,
1DBF-2CNCZ
,
2DBF-2CNCZ
and
4DBF-2CNCZ
, for blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) were synthesized and characterized. The host materials shared dibenzofuran, benzonitrile and dicyanocarbazole units as the electron transport moieties and had an isomeric molecular structure with different substitution positions of the dibenzofuran moiety. They showed a high triplet energy of above 3.0 eV with a twisted molecular structure and were applied as the electron transport type hosts in the mixed host system with a hole transport type
mCBP
host for blue TADF OLEDs. The blue TADF OLEDs developed using the
1DBF-2CNCZ
host demonstrated a high EQE of over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
with a mixed host composition of
mCBP
:
1DBF-2CNCZ
(25 : 75).
The electron transport host materials derived from dibenzofuran, benzonitrile and dicyanocarbazole units showed high triplet energy above 3.0 eV, high efficiency over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
.</description><identifier>ISSN: 2050-7526</identifier><identifier>EISSN: 2050-7534</identifier><identifier>DOI: 10.1039/c9tc06978j</identifier><language>eng</language><publisher>Cambridge: Royal Society of Chemistry</publisher><subject>Benzonitrile ; Electron transport ; Fluorescence ; Light emitting diodes ; Molecular structure ; Organic light emitting diodes ; Service life assessment</subject><ispartof>Journal of materials chemistry. C, Materials for optical and electronic devices, 2020-05, Vol.8 (17), p.5832-5838</ispartof><rights>Copyright Royal Society of Chemistry 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c344t-71c786eade9bdde9be6ff8be55d29ebaf6428c854100d12e4916e1ea752e51db3</citedby><cites>FETCH-LOGICAL-c344t-71c786eade9bdde9be6ff8be55d29ebaf6428c854100d12e4916e1ea752e51db3</cites><orcidid>0000-0002-7677-0605</orcidid></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>Byeon, Sung Yong</creatorcontrib><creatorcontrib>Lee, Kyung Hyung</creatorcontrib><creatorcontrib>Lee, Jun Yeob</creatorcontrib><title>Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes</title><title>Journal of materials chemistry. C, Materials for optical and electronic devices</title><description>Three electron transport type host materials,
1DBF-2CNCZ
,
2DBF-2CNCZ
and
4DBF-2CNCZ
, for blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) were synthesized and characterized. The host materials shared dibenzofuran, benzonitrile and dicyanocarbazole units as the electron transport moieties and had an isomeric molecular structure with different substitution positions of the dibenzofuran moiety. They showed a high triplet energy of above 3.0 eV with a twisted molecular structure and were applied as the electron transport type hosts in the mixed host system with a hole transport type
mCBP
host for blue TADF OLEDs. The blue TADF OLEDs developed using the
1DBF-2CNCZ
host demonstrated a high EQE of over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
with a mixed host composition of
mCBP
:
1DBF-2CNCZ
(25 : 75).
The electron transport host materials derived from dibenzofuran, benzonitrile and dicyanocarbazole units showed high triplet energy above 3.0 eV, high efficiency over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
.</description><subject>Benzonitrile</subject><subject>Electron transport</subject><subject>Fluorescence</subject><subject>Light emitting diodes</subject><subject>Molecular structure</subject><subject>Organic light emitting diodes</subject><subject>Service life assessment</subject><issn>2050-7526</issn><issn>2050-7534</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kU1rHDEMhofSQEOaS-4Fl94K09rz7WO7pF8EcknOg8eWd7147KmsXZj8tf65erslvdUHSViPJMtvUdwI_kHwWn7UkjTvZD_sXxSXFW952bd18_I5rrpXxXVKe57PILqhk5fFr88QnmJwhM4DU8Ew4_SqQtQKJ_UU86UBdEcwDDxowhgYoQppiUiM1gXYLiZis6KMKZ-YjcjcvGA81Rg4Og3MOwvkZmAusMkfgNEOcFber0xpcsdcfGK9WrO3_hARkoZALOJWBadzg-2OSpgdkQvb_MZoIL0uLmyeCNd__VXx-OX2YfOtvLv_-n3z6a7UddNQ2QvdDx0oA3IyJwOdtcMEbWsqCZOyXVMNemgbwbkRFTRSdCBA5Q-DVpipvirenfvmpX4eING4jwcMeeRY1VLynjeyydT7M6UxpoRgxwXdrHAdBR9P-owb-bD5o8-PDL85w5j0M_dPv5x_-7_8uBhb_wYtMZ9x</recordid><startdate>20200507</startdate><enddate>20200507</enddate><creator>Byeon, Sung Yong</creator><creator>Lee, Kyung Hyung</creator><creator>Lee, Jun Yeob</creator><general>Royal Society of Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-7677-0605</orcidid></search><sort><creationdate>20200507</creationdate><title>Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes</title><author>Byeon, Sung Yong ; Lee, Kyung Hyung ; Lee, Jun Yeob</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c344t-71c786eade9bdde9be6ff8be55d29ebaf6428c854100d12e4916e1ea752e51db3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Benzonitrile</topic><topic>Electron transport</topic><topic>Fluorescence</topic><topic>Light emitting diodes</topic><topic>Molecular structure</topic><topic>Organic light emitting diodes</topic><topic>Service life assessment</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Byeon, Sung Yong</creatorcontrib><creatorcontrib>Lee, Kyung Hyung</creatorcontrib><creatorcontrib>Lee, Jun Yeob</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials chemistry. C, Materials for optical and electronic devices</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Byeon, Sung Yong</au><au>Lee, Kyung Hyung</au><au>Lee, Jun Yeob</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes</atitle><jtitle>Journal of materials chemistry. C, Materials for optical and electronic devices</jtitle><date>2020-05-07</date><risdate>2020</risdate><volume>8</volume><issue>17</issue><spage>5832</spage><epage>5838</epage><pages>5832-5838</pages><issn>2050-7526</issn><eissn>2050-7534</eissn><abstract>Three electron transport type host materials,
1DBF-2CNCZ
,
2DBF-2CNCZ
and
4DBF-2CNCZ
, for blue thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) were synthesized and characterized. The host materials shared dibenzofuran, benzonitrile and dicyanocarbazole units as the electron transport moieties and had an isomeric molecular structure with different substitution positions of the dibenzofuran moiety. They showed a high triplet energy of above 3.0 eV with a twisted molecular structure and were applied as the electron transport type hosts in the mixed host system with a hole transport type
mCBP
host for blue TADF OLEDs. The blue TADF OLEDs developed using the
1DBF-2CNCZ
host demonstrated a high EQE of over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
with a mixed host composition of
mCBP
:
1DBF-2CNCZ
(25 : 75).
The electron transport host materials derived from dibenzofuran, benzonitrile and dicyanocarbazole units showed high triplet energy above 3.0 eV, high efficiency over 20% and 31 h lifetime up to 75% of initial luminance at 500 cd m
−2
.</abstract><cop>Cambridge</cop><pub>Royal Society of Chemistry</pub><doi>10.1039/c9tc06978j</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-7677-0605</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2050-7526 |
| ispartof | Journal of materials chemistry. C, Materials for optical and electronic devices, 2020-05, Vol.8 (17), p.5832-5838 |
| issn | 2050-7526 2050-7534 |
| language | eng |
| recordid | cdi_proquest_journals_2399070494 |
| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Benzonitrile Electron transport Fluorescence Light emitting diodes Molecular structure Organic light emitting diodes Service life assessment |
| title | Benzonitrile and dicyanocarbazole derived electron transport type host materials for improved device lifetime in blue thermally activated delayed fluorescent organic light-emitting diodes |
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