Efficient phosphorescent white organic light-emitting devices incorporating blue iridium complex and multifunctional orange–red osmium complex |
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| Authors: | Chih-Hao Chang You-Heng Lin Chung-Chia Chen Chih-Kai Chang Chung-Chih Wu Li-Shiuan Chen Wen-Wen Wu Yun Chi |
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| Affiliation: | aDepartment of Electrical Engineering, Graduate Institute of Photonics and Optoelectronics, Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 10617, Taiwan, ROC;bDepartment of Chemistry, National Tsing Hua University, Hsinchu 300, Taiwan, ROC |
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| Abstract: | By using the unique properties of the efficient orange–red phosphorescent osmium complex in combination with an efficient blue phosphorescent Iridium complex, efficient white organic light-emitting devices with forward viewing efficiencies up to (17% photon/electron, 36 cd/A, 28 lm/W) and white organic light-emitting devices with color stability vs. brightness can be implemented. Results show that the osmium complex is a multi-functional material that not only has high emission efficiency, but also possesses the effective hole trapping capability, which is useful for balancing hole/electron transport and controlling the emission zones when doped at appropriate locations of the device. |
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| Keywords: | Osmium complex Iridium complex White OLEDs |
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