Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes
The magneto‐electroluminescence (MEL) responses of polymer and thermally activated delayed fluorescence‐emitter‐based light‐emitting diodes (TADF LEDs) under constant voltage and current regimes are characterized to elucidate that the current as regulated by magneto‐conductance (MC) mediates MEL of...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-05-01
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| Series: | Advanced Photonics Research |
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| Online Access: | https://doi.org/10.1002/adpr.202400154 |
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| author | Anas Mujahid Yulin Lin Chih‐Ting Li Wei‐Cheng Liu Yi‐Ting Lee Tzung‐Fang Guo |
| author_facet | Anas Mujahid Yulin Lin Chih‐Ting Li Wei‐Cheng Liu Yi‐Ting Lee Tzung‐Fang Guo |
| author_sort | Anas Mujahid |
| collection | DOAJ |
| description | The magneto‐electroluminescence (MEL) responses of polymer and thermally activated delayed fluorescence‐emitter‐based light‐emitting diodes (TADF LEDs) under constant voltage and current regimes are characterized to elucidate that the current as regulated by magneto‐conductance (MC) mediates MEL of devices. Through the analytical fitting of MC and MEL curves, it is disclosed that MC (as interpreted by the polar pair model) partially involves the changes in the curve features, magnitudes, and shapes of MEL responses. A negative curve feature in the MEL response of TADF‐based LEDs is visualized under the electric bias in a low magnetic field regime. This feature should be attributed to the mediation of the MEL by the negative MC due to the unbalanced carrier dynamics of the device. When carrier dynamics are balanced, the specific negative curve feature at low magnetic field regime disappears. In this work, the solid correlation between the MEL and MC responses is revealed and the negative curve feature of MEL under the constant voltage at the low magnetic field regime that involves the contribution from the triplet exciton charge reaction in TADF‐based LEDs is validated. |
| format | Article |
| id | doaj-art-d640b4fa72d4493eab62bacf6b2e3f25 |
| institution | Kabale University |
| issn | 2699-9293 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj-art-d640b4fa72d4493eab62bacf6b2e3f252025-08-20T03:52:28ZengWiley-VCHAdvanced Photonics Research2699-92932025-05-0165n/an/a10.1002/adpr.202400154Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting DiodesAnas Mujahid0Yulin Lin1Chih‐Ting Li2Wei‐Cheng Liu3Yi‐Ting Lee4Tzung‐Fang Guo5Department of Photonics National Cheng Kung University Tainan 701 TaiwanDepartment of Photonics National Cheng Kung University Tainan 701 TaiwanDepartment of Photonics National Cheng Kung University Tainan 701 TaiwanDepartment of Photonics National Cheng Kung University Tainan 701 TaiwanDepartment of Chemistry Soochow University Taipei 111002 TaiwanDepartment of Photonics National Cheng Kung University Tainan 701 TaiwanThe magneto‐electroluminescence (MEL) responses of polymer and thermally activated delayed fluorescence‐emitter‐based light‐emitting diodes (TADF LEDs) under constant voltage and current regimes are characterized to elucidate that the current as regulated by magneto‐conductance (MC) mediates MEL of devices. Through the analytical fitting of MC and MEL curves, it is disclosed that MC (as interpreted by the polar pair model) partially involves the changes in the curve features, magnitudes, and shapes of MEL responses. A negative curve feature in the MEL response of TADF‐based LEDs is visualized under the electric bias in a low magnetic field regime. This feature should be attributed to the mediation of the MEL by the negative MC due to the unbalanced carrier dynamics of the device. When carrier dynamics are balanced, the specific negative curve feature at low magnetic field regime disappears. In this work, the solid correlation between the MEL and MC responses is revealed and the negative curve feature of MEL under the constant voltage at the low magnetic field regime that involves the contribution from the triplet exciton charge reaction in TADF‐based LEDs is validated.https://doi.org/10.1002/adpr.202400154magneto‐conductancemagneto‐electroluminancepolaron pairspolymer light‐emitting diodesthermally activated delayed fluorescence |
| spellingShingle | Anas Mujahid Yulin Lin Chih‐Ting Li Wei‐Cheng Liu Yi‐Ting Lee Tzung‐Fang Guo Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes Advanced Photonics Research magneto‐conductance magneto‐electroluminance polaron pairs polymer light‐emitting diodes thermally activated delayed fluorescence |
| title | Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes |
| title_full | Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes |
| title_fullStr | Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes |
| title_full_unstemmed | Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes |
| title_short | Magneto‐Electroluminescence Responses Mediated by Magneto‐Conductance in Polymer and Thermally Activated Delayed Fluorescence‐Emitter‐Based Light‐Emitting Diodes |
| title_sort | magneto electroluminescence responses mediated by magneto conductance in polymer and thermally activated delayed fluorescence emitter based light emitting diodes |
| topic | magneto‐conductance magneto‐electroluminance polaron pairs polymer light‐emitting diodes thermally activated delayed fluorescence |
| url | https://doi.org/10.1002/adpr.202400154 |
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