Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor
Solution-processed devices with thermally activated delayed fluorescence (TADF) compounds have gained great attention due to their low cost and high performance. Here, two solution-processable TADF emitters named ACCz-DPyM and POxCz-DPyM were synthesized by coupled 9,10-dihydro-9,9-dimethylacridine...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/10/4/456 |
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| author | Yuting He Cheng Zhang Hao Yan Yongshuai Chai Deyun Zhou |
| author_facet | Yuting He Cheng Zhang Hao Yan Yongshuai Chai Deyun Zhou |
| author_sort | Yuting He |
| collection | DOAJ |
| description | Solution-processed devices with thermally activated delayed fluorescence (TADF) compounds have gained great attention due to their low cost and high performance. Here, two solution-processable TADF emitters named ACCz-DPyM and POxCz-DPyM were synthesized by coupled 9,10-dihydro-9,9-dimethylacridine or phenoxazine modified carbazole as donor with di(pyridin-3-yl)methanone as acceptor. Both TADF compounds show same small Δ<i>Ε</i><sub>ST</sub> of 0.04 eV and high PLQY of 66.2% and 58.2%. The devices fabricated by ACCz-DPyM and POxCz-DPyM as emitters show excellent performance as solution-processed with low turn-on voltage of 4.0 and 3.4 V, high luminance of 6209 and 3248 cd m<sup>−2</sup> at 8 V, the maximum current efficiency of 9.9 and 15.9 cd A<sup>−1</sup>, the maximum external quantum efficiency of 6.6% and 6.5% and low efficiency roll-off. The solution-processed device based on ACCz-DPyM shows bluish-green emission. These results show that ACCz-DPyM and POxCz-DPyM are suitable for solution processing devices. |
| first_indexed | 2024-03-11T04:37:04Z |
| format | Article |
| id | doaj.art-2ffda92d072c4fe789ad9942275915b1 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-11T04:37:04Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-2ffda92d072c4fe789ad9942275915b12023-11-17T20:58:19ZengMDPI AGPhotonics2304-67322023-04-0110445610.3390/photonics10040456Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as AcceptorYuting He0Cheng Zhang1Hao Yan2Yongshuai Chai3Deyun Zhou4School of Microelectronics, Northwestern Polytechnical University, Xi’an 710129, ChinaKey Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi’an Polytechnic University, Xi’an 710048, ChinaSchool of Advanced Materials, Peking University Shenzhen Graduate School, Peking University, Shenzhen 518055, ChinaInterdisciplinary Research Center on Biology and Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 201210, ChinaSchool of Microelectronics, Northwestern Polytechnical University, Xi’an 710129, ChinaSolution-processed devices with thermally activated delayed fluorescence (TADF) compounds have gained great attention due to their low cost and high performance. Here, two solution-processable TADF emitters named ACCz-DPyM and POxCz-DPyM were synthesized by coupled 9,10-dihydro-9,9-dimethylacridine or phenoxazine modified carbazole as donor with di(pyridin-3-yl)methanone as acceptor. Both TADF compounds show same small Δ<i>Ε</i><sub>ST</sub> of 0.04 eV and high PLQY of 66.2% and 58.2%. The devices fabricated by ACCz-DPyM and POxCz-DPyM as emitters show excellent performance as solution-processed with low turn-on voltage of 4.0 and 3.4 V, high luminance of 6209 and 3248 cd m<sup>−2</sup> at 8 V, the maximum current efficiency of 9.9 and 15.9 cd A<sup>−1</sup>, the maximum external quantum efficiency of 6.6% and 6.5% and low efficiency roll-off. The solution-processed device based on ACCz-DPyM shows bluish-green emission. These results show that ACCz-DPyM and POxCz-DPyM are suitable for solution processing devices.https://www.mdpi.com/2304-6732/10/4/456TADFsolution-processedOLED |
| spellingShingle | Yuting He Cheng Zhang Hao Yan Yongshuai Chai Deyun Zhou Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor Photonics TADF solution-processed OLED |
| title | Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor |
| title_full | Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor |
| title_fullStr | Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor |
| title_full_unstemmed | Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor |
| title_short | Highly Efficient Solution-Processed Bluish-Green Thermally Activated Delayed Fluorescence Compounds Using Di(pyridin-3-yl)methanone as Acceptor |
| title_sort | highly efficient solution processed bluish green thermally activated delayed fluorescence compounds using di pyridin 3 yl methanone as acceptor |
| topic | TADF solution-processed OLED |
| url | https://www.mdpi.com/2304-6732/10/4/456 |
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