Change in electron and hole electrical conductions in OLEDs with different doping concentrations of 4CzIPN

References

• Tang C.W., and Van Slyke S.A. Organic electroluminescent diodes. Appl. Phys. Lett. 1987;51 (12):913–915. doi:10.1063/1.98799
   Web of Science ®Google Scholar
• Kaji H., Suzuki H., Fukushima T., Shizu K., Kubo S., Komino T., Oiwa H., Suzuki F., Wakamiya A., Murata Y., Adachi C. Purely organic electroluminescent material realizing 100% conversion from electricity to light. Nat. Commun. 2015;6:8476. doi:10.1038/ncomms9476
   PubMedGoogle Scholar
• Moon C.-K., Suzuki K., Shizu K., Kaji H. Combined Inter- and Intramolecular Charge-Transfer Processes for Highly Efficient Fluorescent Organic Light-Emitting Diodes with Reduced Triplet Exciton Quenching. Adv. Mater. 2017;29 (17):1606448. doi:10.1002/adma.201606448
   Google Scholar
• Lin T.-A., Chatterjee T., Tsai W.-L., Wu M.-J., Jiao M., Pan K.-C., Yi C.-L., Chung C.-L. Wong W.-T., Wu C.-C. Sky-Blue Organic Light Emitting Diode with 37% External Quantum Efficiency Using Thermally Activated Delayed Fluorescence from Spiroacridine-Triazine Hybrid. Adv. Mater. 2016;28 (32):6976–6983. doi:10.1002/adma.201601675
   PubMed Web of Science ®Google Scholar
• Seino Y., Inimata S., Sasabe H., Pu Y.-J., Kido J. High-Performance Green OLEDs Using Thermally Activated Delayed Fluorescence with a Power Efficiency of over 100 lm WAdv. Mater. 2016;28 (13):2638–2643. doi:10.1002/adma.201503782
   PubMed Web of Science ®Google Scholar
• Sasabe H., Sato R., Suzuki K., Watanabe Y., Adachi C., Kaji H., Kido J. Ultrahigh Power Efficiency Thermally Activated Delayed Fluorescent OLEDs by the Strategic Use of Electron-Transport Materials. Adv. Opt. Mater. 2018;6 (17):1800376. doi:10.1002/adom.201800376
   Google Scholar
• Zhang X., Cooper M. W., Zhang Y., Fuentes-Hernandez C., Barlow S., Marder S. R., Kippelen B. Host-Free Yellow-Green Organic Light-Emitting Diodes with External Quantum Efficiency over 20% Based on a Compound Exhibiting Thermally Activated Delayed Fluorescence. ACSAppl. Mater. Interfaces. 2019;11 (13):12693–12698. doi:10.1021/acsami.8b18798
   PubMed Web of Science ®Google Scholar
• Kumar A., Lee W., Lee T., Jung J. Yoo S., Lee M. H. Triarylboron-based TADF emitters with perfluoro substituents: High-efficiency OLEDs with a power efficiency over 100 lm W−1. J. Mater. Chem. C. 2020;8 (12):4253–4263. doi:10.1039/C9TC06204A
   Google Scholar
• Mori T., Imanishi M., Nishikawa T. Estimation of Electron Current in Organic Light-Emitting Diodes Using an Operating Point Model. J. Photopolym. Sci. Technol. 2016;29 (2):311. doi:10.2494/photopolymer.29.311
   Web of Science ®Google Scholar
• Mori T., Imanishi M., Nishikawa T. Electrical Conduction Behavior of Organic Light-Emitting Diodes Using Inhomogeneous Fluorinated Self-Assembled Monolayer as a Hole-Injection Layer. Appl. Phys. Express 2011;4 (7):071601. doi:10.1143/APEX.4.071601
   Google Scholar
• Sato R., Aoyama S., Seike Y., Mori T. Electrical conductivity of 1,3-bis(N-carbazolyl)benzene (mCP) on a hole-transport bilayer. Mol. Cryst. Liq. Cryst. 2021. doi:10.1080/15421406.2021.1946988
   Google Scholar
• Uoyama H., Goushi K., Shizu K., Nomura H., Adachi C. Highly efficient organic light-emitting diodes from delayed fluorescence. Nature 2012;492 (7428):234–238. doi:10.1038/nature11687
   PubMed Web of Science ®Google Scholar
• Nakanotani H., Masui K., Nishide J., Shibata T., Adachi C. Promising operational stability of high-efficiency organic light-emitting diodes based on thermally activated delayed fluorescence. Sci. Rep. 2013;3:2127. doi:10.1038/srep02127
   PubMedGoogle Scholar
• Nishimoto T., Yasuda T., Kondo R., Adachi C. A six-carbazole-decorated cyclophosphazene as a host with high triplet energy to realize efficient delayed-fluorescence OLEDs. Mater. Horiz. 2014;1 (2):264–269. doi:10.1039/C3MH00079F
   Web of Science ®Google Scholar
• Sun J. W, Lee J.-H., Moon C.-K., Shin H., Kim J.-J., A Fluorescent Organic Light-Emitting Diode with 30% External Quantum Efficiency. Adv. Mater. 2014;26 (32):5684–5688. doi:10.1002/adma.201401407
   PubMed Web of Science ®Google Scholar
• Kamata T., Sasabe H., Ito N., Sukegawa Y., Arai A., Chiba T., Yokoyama D., Kido J. Simultaneous realization of high-efficiency, low-drive voltage, and long lifetime TADF OLEDs by multifunctional hole-transporters. J. Mater. Chem. C. 2020;8 (21):7200–7210. doi:10.1039/D0TC00330A
   Web of Science ®Google Scholar
• Tanaka M., Noda H., Nakanotani H. Adachi C. Effect of Carrier Balance on Device Degradation of Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence Emitters. Adv. Electron. Mater. 2019;5 (5):1800708. doi:10.1002/aelm.201800708
   Google Scholar
• Tanaka D., Sasabe H., Li Y.-J., Su S.-J., Takeda T., Kido J. Ultra High Efficiency Green Organic Light-Emitting Devices. Jpn. J. Appl. Phys. 2007;46 (1):L10. doi:10.1143/JJAP.46.L10
   Web of Science ®Google Scholar
• Sasabe H., Pu Y.-J., Nakayama K., Kido J. m-Terphenyl-modified carbazole host material for highly efficient blue and green PHOLEDS. Chem. Commun. 2009; 6655–6657. doi:10.1039/b908139a
   Google Scholar
• Tao Y., Wang Q., Yang C., Zhong C., Qin J., Ma D. Multifunctional Triphenylamine/Oxadiazole Hybrid as Host and Exciton-Blocking Material: High Efficiency Green Phosphorescent OLEDs Using Easily Available and Common Materials. Adv. Funct. Mater. 2010;20 (17):2923–2929. doi:10.1002/adfm.201000669
   Web of Science ®Google Scholar
• Sasabe H., Seino Y., Kimura M. Kido J., A m-Terphenyl-Modifed Sulfone Derivative as a Host Material for High-Efficiency Blue and Green Phosphorescent OLEDs. Chem. Mater. 2012;24 (8):1404–1406. doi:10.1021/cm3006748
   Web of Science ®Google Scholar
• Park Y.-S., Lee S., Kim K.-H., Kim S.-Y., Lee J.-H., Kim J.-J. Exciplex-Forming Co-host for Organic Light-Emitting Diodes with Ultimate Efficiency. Adv. Funct. Mater. 2013;23 (39):4914–4920. doi:10.1002/adfm.201300547
   Google Scholar
• Oh C.S., Lee J.Y., Noh C.H., Kim S.H. Molecular design of host materials for high power efficiency in blue phosphorescent organic light-emitting diodes doped with an imidazole ligand based triplet emitter. J. Mater. Chem. C. 2016;4:3792–3797. doi:10.1039/C5TC02595H
   Google Scholar