Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs
Abstract Thermally stable, strongly luminescent gold‐TADF emitters are the clue to realize practical applications of gold metal in next generation display and lighting technology, a scarce example of which is herein described. A series of donor–acceptor type cyclometalated gold(III) alkynyl complexe...
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| Format: | Article |
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Wiley
2019-09-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.201802297 |
| _version_ | 1819061953625063424 |
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| author | Dongling Zhou Wai‐Pong To Yoonhyun Kwak Yongsuk Cho Gang Cheng Glenna So Ming Tong Chi‐Ming Che |
| author_facet | Dongling Zhou Wai‐Pong To Yoonhyun Kwak Yongsuk Cho Gang Cheng Glenna So Ming Tong Chi‐Ming Che |
| author_sort | Dongling Zhou |
| collection | DOAJ |
| description | Abstract Thermally stable, strongly luminescent gold‐TADF emitters are the clue to realize practical applications of gold metal in next generation display and lighting technology, a scarce example of which is herein described. A series of donor–acceptor type cyclometalated gold(III) alkynyl complexes with some of them displaying highly efficient thermally activated delayed fluorescence (TADF) with Φ up to 88% in thin films and emission lifetimes of ≈1–2 µs at room temperature are developed. The emission color of these complexes is readily tunable from green to red by varying the donor unit and cyclometalating ligand. Vacuum‐deposited organic light‐emitting diodes (OLEDs) with these complexes as emissive dopants achieve external quantum efficiencies (EQEs) and luminance of up to 23.4% and 70 300 cd m−2, respectively. |
| first_indexed | 2024-12-21T14:51:05Z |
| format | Article |
| id | doaj.art-f93685945f1145a083e43cc6fe8720dc |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-12-21T14:51:05Z |
| publishDate | 2019-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-f93685945f1145a083e43cc6fe8720dc2022-12-21T18:59:54ZengWileyAdvanced Science2198-38442019-09-01618n/an/a10.1002/advs.201802297Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDsDongling Zhou0Wai‐Pong To1Yoonhyun Kwak2Yongsuk Cho3Gang Cheng4Glenna So Ming Tong5Chi‐Ming Che6State Key Laboratory of Synthetic Chemistry Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR ChinaState Key Laboratory of Synthetic Chemistry Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR ChinaOrganic Electronic Materials Lab. Samsung Advanced Institute of Technology 130 Samsung‐ro, Yeongtong‐gu Suwon‐si Gyeonggi‐do 16678 Republic of KoreaOrganic Electronic Materials Lab. Samsung Advanced Institute of Technology 130 Samsung‐ro, Yeongtong‐gu Suwon‐si Gyeonggi‐do 16678 Republic of KoreaState Key Laboratory of Synthetic Chemistry Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR ChinaState Key Laboratory of Synthetic Chemistry Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR ChinaState Key Laboratory of Synthetic Chemistry Institute of Molecular Functional Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR ChinaAbstract Thermally stable, strongly luminescent gold‐TADF emitters are the clue to realize practical applications of gold metal in next generation display and lighting technology, a scarce example of which is herein described. A series of donor–acceptor type cyclometalated gold(III) alkynyl complexes with some of them displaying highly efficient thermally activated delayed fluorescence (TADF) with Φ up to 88% in thin films and emission lifetimes of ≈1–2 µs at room temperature are developed. The emission color of these complexes is readily tunable from green to red by varying the donor unit and cyclometalating ligand. Vacuum‐deposited organic light‐emitting diodes (OLEDs) with these complexes as emissive dopants achieve external quantum efficiencies (EQEs) and luminance of up to 23.4% and 70 300 cd m−2, respectively.https://doi.org/10.1002/advs.201802297goldligand‐to‐ligand charge transferorganic light‐emitting devicesthermally activated delayed fluorescence |
| spellingShingle | Dongling Zhou Wai‐Pong To Yoonhyun Kwak Yongsuk Cho Gang Cheng Glenna So Ming Tong Chi‐Ming Che Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs Advanced Science gold ligand‐to‐ligand charge transfer organic light‐emitting devices thermally activated delayed fluorescence |
| title | Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs |
| title_full | Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs |
| title_fullStr | Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs |
| title_full_unstemmed | Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs |
| title_short | Thermally Stable Donor–Acceptor Type (Alkynyl)Gold(III) TADF Emitters Achieved EQEs and Luminance of up to 23.4% and 70 300 cd m−2 in Vacuum‐Deposited OLEDs |
| title_sort | thermally stable donor acceptor type alkynyl gold iii tadf emitters achieved eqes and luminance of up to 23 4 and 70 300 cd m 2 in vacuum deposited oleds |
| topic | gold ligand‐to‐ligand charge transfer organic light‐emitting devices thermally activated delayed fluorescence |
| url | https://doi.org/10.1002/advs.201802297 |
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