Efficient and stable single-doped white OLEDs using a palladium-based phosphorescent excimer† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c7sc02512b
نویسندگان
چکیده
A tetradentate Pd(ii) complex, Pd3O3, which exhibits highly efficient excimer emission is synthesized and characterized. Pd3O3 can achieve blue emission despite using phenyl-pyridine emissive ligands which have been a mainstay of stable green and red phosphorescent emitter designs, making Pd3O3 a good candidate for stable blue or white OLEDs. Pd3O3 exhibits strong and efficient phosphorescent excimer emission expanding the excimer based white OLEDs beyond the sole class of Pt complexes. Devices of Pd3O3 demonstrate peak external quantum efficiencies as high as 24.2% and power efficiencies of 67.9 Lm per W for warm white devices. Furthermore, Pd3O3 devices in a carefully designed stable structure achieved a device operational lifetime of nearly 3000 h at 1000 cd m-2 without any outcoupling enhancement while simultaneously achieving peak external quantum efficiencies of 27.3% and power efficiencies over 81 Lm per W.
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Cage-templated synthesis of highly stable palladium nanoparticles and their catalytic activities in Suzuki–Miyaura coupling† †Electronic supplementary information (ESI) available: Detailed experimental materials, general synthetic procedures, TEM images, and spectral characterization data. See DOI: 10.1039/c7sc03148c
School of Materials Science and Engineering Materials & Technology, Yunnan University Department of Chemistry and Biochemistr 80309, USA. E-mail: [email protected] Department of Electrical, Computer and Ene Boulder, CO 80309, USA † Electronic supplementary information materials, general synthetic procedu characterization data. See DOI: 10.1039/c7 ‡ These authors contributed equally. Cite thi...
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