New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs
Abstract Two newly designed and synthesized [3+2+1] iridium complexes through introducing bulky trimethylsiliyl (TMS) groups are doped with a terminal emitter of v–DABNA to form an coincident overlapping spectra between the emission of these two phosphors and the absorption of v–DABNA, creating casc...
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| Format: | Article |
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Wiley
2023-10-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202301112 |
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| author | Chengcheng Wu Kai‐Ning Tong Kefei Shi Zhaoyun Jin Yuan Wu Yingxiao Mu Yanping Huo Man‐Chung Tang Chen Yang Hong Meng Feiyu Kang Guodan Wei |
| author_facet | Chengcheng Wu Kai‐Ning Tong Kefei Shi Zhaoyun Jin Yuan Wu Yingxiao Mu Yanping Huo Man‐Chung Tang Chen Yang Hong Meng Feiyu Kang Guodan Wei |
| author_sort | Chengcheng Wu |
| collection | DOAJ |
| description | Abstract Two newly designed and synthesized [3+2+1] iridium complexes through introducing bulky trimethylsiliyl (TMS) groups are doped with a terminal emitter of v–DABNA to form an coincident overlapping spectra between the emission of these two phosphors and the absorption of v–DABNA, creating cascade resonant energy transfer for efficient triplet harvesting. To boost the color quality and efficiency, the fabricated hyper‐OLEDs have been optimized to achieve a high external quantum efficiency of 31.06%, which has been among the highest efficiency results reported for phosphor sensitized saturated‐blue hyper‐OLEDs, and pure blue emission peak at 467 nm with the full width at half maxima (FWHM) as narrow as 18 nm and the CIEy values down to 0.097, satisfying the National Institute of Standards and Technology (NIST) requirement for saturated blue OLEDs display. Surprisingly, such hyper‐OLEDs have obtained the converted lifetime (LT50) up to 4552 h at the brightness of 100 cd m−2, demonstrating effective Förster resonance energy transfer (FRET) process. Therefore, employing these new bulky TMS substituent [3+2+1] iridium(III) complexes for effective sensitizers can greatly pave the way for further development of high efficiency and stable blue OLEDs in display and lighting applications. |
| format | Article |
| id | doaj-art-a0b7c496f6a843e9a8b9d0c2c4e25e73 |
| institution | Kabale University |
| issn | 2198-3844 |
| language | English |
| publishDate | 2023-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj-art-a0b7c496f6a843e9a8b9d0c2c4e25e732024-11-22T13:11:49ZengWileyAdvanced Science2198-38442023-10-011029n/an/a10.1002/advs.202301112New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDsChengcheng Wu0Kai‐Ning Tong1Kefei Shi2Zhaoyun Jin3Yuan Wu4Yingxiao Mu5Yanping Huo6Man‐Chung Tang7Chen Yang8Hong Meng9Feiyu Kang10Guodan Wei11Tsinghua–Berkeley Shenzhen Institute (TBSI) Tsinghua University Shenzhen 518055 ChinaInstitute of Materials Research Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen 518055 ChinaTsinghua–Berkeley Shenzhen Institute (TBSI) Tsinghua University Shenzhen 518055 ChinaInstitute of Materials Research Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen 518055 ChinaPURI Materials, Inc Shenzhen 518133 ChinaSchool of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 ChinaSchool of Chemical Engineering and Light Industry Guangdong University of Technology Guangzhou 510006 ChinaInstitute of Materials Research Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen 518055 ChinaPURI Materials, Inc Shenzhen 518133 ChinaSchool of Advanced Materials Shenzhen Graduate School Peking University Shenzhen 518055 ChinaTsinghua–Berkeley Shenzhen Institute (TBSI) Tsinghua University Shenzhen 518055 ChinaTsinghua–Berkeley Shenzhen Institute (TBSI) Tsinghua University Shenzhen 518055 ChinaAbstract Two newly designed and synthesized [3+2+1] iridium complexes through introducing bulky trimethylsiliyl (TMS) groups are doped with a terminal emitter of v–DABNA to form an coincident overlapping spectra between the emission of these two phosphors and the absorption of v–DABNA, creating cascade resonant energy transfer for efficient triplet harvesting. To boost the color quality and efficiency, the fabricated hyper‐OLEDs have been optimized to achieve a high external quantum efficiency of 31.06%, which has been among the highest efficiency results reported for phosphor sensitized saturated‐blue hyper‐OLEDs, and pure blue emission peak at 467 nm with the full width at half maxima (FWHM) as narrow as 18 nm and the CIEy values down to 0.097, satisfying the National Institute of Standards and Technology (NIST) requirement for saturated blue OLEDs display. Surprisingly, such hyper‐OLEDs have obtained the converted lifetime (LT50) up to 4552 h at the brightness of 100 cd m−2, demonstrating effective Förster resonance energy transfer (FRET) process. Therefore, employing these new bulky TMS substituent [3+2+1] iridium(III) complexes for effective sensitizers can greatly pave the way for further development of high efficiency and stable blue OLEDs in display and lighting applications.https://doi.org/10.1002/advs.202301112blue OLEDshigh efficiencyiridium complexphosphorescencesensitizer |
| spellingShingle | Chengcheng Wu Kai‐Ning Tong Kefei Shi Zhaoyun Jin Yuan Wu Yingxiao Mu Yanping Huo Man‐Chung Tang Chen Yang Hong Meng Feiyu Kang Guodan Wei New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs Advanced Science blue OLEDs high efficiency iridium complex phosphorescence sensitizer |
| title | New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs |
| title_full | New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs |
| title_fullStr | New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs |
| title_full_unstemmed | New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs |
| title_short | New [3+2+1] Iridium Complexes as Effective Phosphorescent Sensitizers for Efficient Narrowband Saturated–Blue Hyper–OLEDs |
| title_sort | new 3 2 1 iridium complexes as effective phosphorescent sensitizers for efficient narrowband saturated blue hyper oleds |
| topic | blue OLEDs high efficiency iridium complex phosphorescence sensitizer |
| url | https://doi.org/10.1002/advs.202301112 |
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