High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host
Abstract A suitable host material is pivotal for efficient and stable deep-blue phosphorescent organic light-emitting diodes (PhOLEDs). Here, we construct a deuterated exciplex-forming host with improved molecular stability and charge transport and firstly unveil an “external deuteration effect” on...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-59583-8 |
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| author | Wenbo Yuan Tianyu Huang Jianping Zhou Man-Chung Tang Dongdong Zhang Lian Duan |
| author_facet | Wenbo Yuan Tianyu Huang Jianping Zhou Man-Chung Tang Dongdong Zhang Lian Duan |
| author_sort | Wenbo Yuan |
| collection | DOAJ |
| description | Abstract A suitable host material is pivotal for efficient and stable deep-blue phosphorescent organic light-emitting diodes (PhOLEDs). Here, we construct a deuterated exciplex-forming host with improved molecular stability and charge transport and firstly unveil an “external deuteration effect” on dopant, which reduces the shoulder emissions for slightly blue-shifted colours and also accelerates the radiative decay rates for improved photoluminescence efficiency. The corresponding deep-blue PhOLEDs based on two platinum complexes, PtON-TBBI and PtON-tb-DTB, achieve lower operational voltages and higher maximum external quantum efficiencies of 27.4/19.9% and power efficiency of 41.2/33.6 lm/W, respectively, compared to the hydrogen-based counterparts. Moreover, lifetimes of 370 and 557 h to reach 90% of the initial luminance of 1000 cd/m2 with Commission Internationale de l’Eclairage coordinates of (0.148, 0.165) and (0.153, 0.213) are achieved, 1.6 and 1.4 times longer than the ones based on the non-deuterated hosts with even blue-shifted colours. |
| format | Article |
| id | doaj-art-e3a2fdddc01e47b8a0859cd77e8389e8 |
| institution | DOAJ |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-e3a2fdddc01e47b8a0859cd77e8389e82025-08-20T03:10:32ZengNature PortfolioNature Communications2041-17232025-05-0116111010.1038/s41467-025-59583-8High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming hostWenbo Yuan0Tianyu Huang1Jianping Zhou2Man-Chung Tang3Dongdong Zhang4Lian Duan5Key Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Department of Chemistry, Tsinghua UniversityKey Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Department of Chemistry, Tsinghua UniversityKey Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Department of Chemistry, Tsinghua UniversityInstitute of Materials Research, Tsinghua Shenzhen International Graduate School, Tsinghua UniversityKey Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Department of Chemistry, Tsinghua UniversityKey Laboratory of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Department of Chemistry, Tsinghua UniversityAbstract A suitable host material is pivotal for efficient and stable deep-blue phosphorescent organic light-emitting diodes (PhOLEDs). Here, we construct a deuterated exciplex-forming host with improved molecular stability and charge transport and firstly unveil an “external deuteration effect” on dopant, which reduces the shoulder emissions for slightly blue-shifted colours and also accelerates the radiative decay rates for improved photoluminescence efficiency. The corresponding deep-blue PhOLEDs based on two platinum complexes, PtON-TBBI and PtON-tb-DTB, achieve lower operational voltages and higher maximum external quantum efficiencies of 27.4/19.9% and power efficiency of 41.2/33.6 lm/W, respectively, compared to the hydrogen-based counterparts. Moreover, lifetimes of 370 and 557 h to reach 90% of the initial luminance of 1000 cd/m2 with Commission Internationale de l’Eclairage coordinates of (0.148, 0.165) and (0.153, 0.213) are achieved, 1.6 and 1.4 times longer than the ones based on the non-deuterated hosts with even blue-shifted colours.https://doi.org/10.1038/s41467-025-59583-8 |
| spellingShingle | Wenbo Yuan Tianyu Huang Jianping Zhou Man-Chung Tang Dongdong Zhang Lian Duan High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host Nature Communications |
| title | High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host |
| title_full | High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host |
| title_fullStr | High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host |
| title_full_unstemmed | High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host |
| title_short | High-efficiency and long-lifetime deep-blue phosphorescent OLEDs using deuterated exciplex-forming host |
| title_sort | high efficiency and long lifetime deep blue phosphorescent oleds using deuterated exciplex forming host |
| url | https://doi.org/10.1038/s41467-025-59583-8 |
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