Loading…
Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes
Electroluminescence (EL) from organic light-emitting diodes can be surprisingly sensitive ( ∼ 20 % ) to modest magnetic fields B ( 0 - 2 T ) . The origin of this magnetic-field effect has not been clearly identified, although the magnetic-field effect in some devices resembles that of delayed fluore...
Saved in:
| Published in: | Applied physics letters 2005-03, Vol.86 (11), p.111109-111109-3 |
|---|---|
| Main Authors: | , , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| cited_by | cdi_FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3 |
|---|---|
| cites | cdi_FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3 |
| container_end_page | 111109-3 |
| container_issue | 11 |
| container_start_page | 111109 |
| container_title | Applied physics letters |
| container_volume | 86 |
| creator | Wilkinson, John Davis, A. H. Bussmann, K. Long, J. P. |
| description | Electroluminescence (EL) from organic light-emitting diodes can be surprisingly sensitive
(
∼
20
%
)
to modest magnetic fields
B
(
0
-
2
T
)
. The origin of this magnetic-field effect has not been clearly identified, although the magnetic-field effect in some devices resembles that of delayed fluorescence in anthracene, which originates from magnetic-field-dependent singlet-exciton production via triplet-triplet annihilation (TTA). Here, we test the role of TTA at low magnetic fields
(
∼
80
mT
)
by measuring transient EL and by employing dc drive levels so low that the bimolecular rate of TTA is unimportant. Under these conditions, we find enhancements of EL exceeding 14% at the lowest drives, which excludes TTA-mediated magnetic-field effects and indicates a role for charge-carrier pair states. |
| doi_str_mv | 10.1063/1.1883322 |
| format | article |
| fullrecord | <record><control><sourceid>scitation_cross</sourceid><recordid>TN_cdi_crossref_primary_10_1063_1_1883322</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>apl</sourcerecordid><originalsourceid>FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3</originalsourceid><addsrcrecordid>eNp1kEtLAzEUhYMoWKsL_0G2LlKT3Hl14UJKfUDBja6HTHJnemVmIkla8N87tnXp6nK4HwfOx9itkgslC7hXC1VVAFqfsZmSZSlAqeqczaSUIIplri7ZVYyfU8w1wIzt13tyOFrkrQ_cbk3oUFgTAmHgAzoyCR0fTDdiIitawn6K3u16k8iP3Lcce7Qp-H430IjRHspo-oTOjGR5T902CRwoJRo77sg7jNfsojV9xJvTnbOPp_X76kVs3p5fV48bYXUFSVS2UbbKQZboqqXGXDvjLNimySWg07B0DRQmM2XROlkaBOkAZKZMkemycDBnd8deG3yMAdv6K9BgwnetZP0rrFb1SdjEPhzZaCkd1v0P_1mrJ2v10Rr8AFpGdTY</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes</title><source>American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)</source><source>American Institute of Physics</source><creator>Wilkinson, John ; Davis, A. H. ; Bussmann, K. ; Long, J. P.</creator><creatorcontrib>Wilkinson, John ; Davis, A. H. ; Bussmann, K. ; Long, J. P.</creatorcontrib><description>Electroluminescence (EL) from organic light-emitting diodes can be surprisingly sensitive
(
∼
20
%
)
to modest magnetic fields
B
(
0
-
2
T
)
. The origin of this magnetic-field effect has not been clearly identified, although the magnetic-field effect in some devices resembles that of delayed fluorescence in anthracene, which originates from magnetic-field-dependent singlet-exciton production via triplet-triplet annihilation (TTA). Here, we test the role of TTA at low magnetic fields
(
∼
80
mT
)
by measuring transient EL and by employing dc drive levels so low that the bimolecular rate of TTA is unimportant. Under these conditions, we find enhancements of EL exceeding 14% at the lowest drives, which excludes TTA-mediated magnetic-field effects and indicates a role for charge-carrier pair states.</description><identifier>ISSN: 0003-6951</identifier><identifier>EISSN: 1077-3118</identifier><identifier>DOI: 10.1063/1.1883322</identifier><identifier>CODEN: APPLAB</identifier><language>eng</language><publisher>American Institute of Physics</publisher><ispartof>Applied physics letters, 2005-03, Vol.86 (11), p.111109-111109-3</ispartof><rights>2005 American Institute of Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3</citedby><cites>FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/apl/article-lookup/doi/10.1063/1.1883322$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>314,780,782,784,795,27924,27925,76255</link.rule.ids></links><search><creatorcontrib>Wilkinson, John</creatorcontrib><creatorcontrib>Davis, A. H.</creatorcontrib><creatorcontrib>Bussmann, K.</creatorcontrib><creatorcontrib>Long, J. P.</creatorcontrib><title>Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes</title><title>Applied physics letters</title><description>Electroluminescence (EL) from organic light-emitting diodes can be surprisingly sensitive
(
∼
20
%
)
to modest magnetic fields
B
(
0
-
2
T
)
. The origin of this magnetic-field effect has not been clearly identified, although the magnetic-field effect in some devices resembles that of delayed fluorescence in anthracene, which originates from magnetic-field-dependent singlet-exciton production via triplet-triplet annihilation (TTA). Here, we test the role of TTA at low magnetic fields
(
∼
80
mT
)
by measuring transient EL and by employing dc drive levels so low that the bimolecular rate of TTA is unimportant. Under these conditions, we find enhancements of EL exceeding 14% at the lowest drives, which excludes TTA-mediated magnetic-field effects and indicates a role for charge-carrier pair states.</description><issn>0003-6951</issn><issn>1077-3118</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLAzEUhYMoWKsL_0G2LlKT3Hl14UJKfUDBja6HTHJnemVmIkla8N87tnXp6nK4HwfOx9itkgslC7hXC1VVAFqfsZmSZSlAqeqczaSUIIplri7ZVYyfU8w1wIzt13tyOFrkrQ_cbk3oUFgTAmHgAzoyCR0fTDdiIitawn6K3u16k8iP3Lcce7Qp-H430IjRHspo-oTOjGR5T902CRwoJRo77sg7jNfsojV9xJvTnbOPp_X76kVs3p5fV48bYXUFSVS2UbbKQZboqqXGXDvjLNimySWg07B0DRQmM2XROlkaBOkAZKZMkemycDBnd8deG3yMAdv6K9BgwnetZP0rrFb1SdjEPhzZaCkd1v0P_1mrJ2v10Rr8AFpGdTY</recordid><startdate>20050314</startdate><enddate>20050314</enddate><creator>Wilkinson, John</creator><creator>Davis, A. H.</creator><creator>Bussmann, K.</creator><creator>Long, J. P.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20050314</creationdate><title>Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes</title><author>Wilkinson, John ; Davis, A. H. ; Bussmann, K. ; Long, J. P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wilkinson, John</creatorcontrib><creatorcontrib>Davis, A. H.</creatorcontrib><creatorcontrib>Bussmann, K.</creatorcontrib><creatorcontrib>Long, J. P.</creatorcontrib><collection>CrossRef</collection><jtitle>Applied physics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wilkinson, John</au><au>Davis, A. H.</au><au>Bussmann, K.</au><au>Long, J. P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes</atitle><jtitle>Applied physics letters</jtitle><date>2005-03-14</date><risdate>2005</risdate><volume>86</volume><issue>11</issue><spage>111109</spage><epage>111109-3</epage><pages>111109-111109-3</pages><issn>0003-6951</issn><eissn>1077-3118</eissn><coden>APPLAB</coden><abstract>Electroluminescence (EL) from organic light-emitting diodes can be surprisingly sensitive
(
∼
20
%
)
to modest magnetic fields
B
(
0
-
2
T
)
. The origin of this magnetic-field effect has not been clearly identified, although the magnetic-field effect in some devices resembles that of delayed fluorescence in anthracene, which originates from magnetic-field-dependent singlet-exciton production via triplet-triplet annihilation (TTA). Here, we test the role of TTA at low magnetic fields
(
∼
80
mT
)
by measuring transient EL and by employing dc drive levels so low that the bimolecular rate of TTA is unimportant. Under these conditions, we find enhancements of EL exceeding 14% at the lowest drives, which excludes TTA-mediated magnetic-field effects and indicates a role for charge-carrier pair states.</abstract><pub>American Institute of Physics</pub><doi>10.1063/1.1883322</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0003-6951 |
| ispartof | Applied physics letters, 2005-03, Vol.86 (11), p.111109-111109-3 |
| issn | 0003-6951 1077-3118 |
| language | eng |
| recordid | cdi_crossref_primary_10_1063_1_1883322 |
| source | American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list); American Institute of Physics |
| title | Evidence for charge-carrier mediated magnetic-field modulation of electroluminescence in organic light-emitting diodes |
| url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-07T20%3A35%3A19IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-scitation_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Evidence%20for%20charge-carrier%20mediated%20magnetic-field%20modulation%20of%20electroluminescence%20in%20organic%20light-emitting%20diodes&rft.jtitle=Applied%20physics%20letters&rft.au=Wilkinson,%20John&rft.date=2005-03-14&rft.volume=86&rft.issue=11&rft.spage=111109&rft.epage=111109-3&rft.pages=111109-111109-3&rft.issn=0003-6951&rft.eissn=1077-3118&rft.coden=APPLAB&rft_id=info:doi/10.1063/1.1883322&rft_dat=%3Cscitation_cross%3Eapl%3C/scitation_cross%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c283t-8cb1c85307ed892e52dadc3cbb503ed239db36a4a76fd07ae30d33041a64276d3%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |