23 September 2016 Enhanced color purity of blue OLEDs based on well-design structure
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Abstract
We have fabricated blue organic light-emitting devices (OLEDs) with higher color purity and stability by optimizing the structure of the Glass/ITO/NPB(50 nm)/ BCzVBi (30 nm)/ TPBi (x nm)/Alq3(20 nm)/LiF/Al. The results show that the introducing of hole blocking layer(HBL) TPBi greatly can improve not only the color purity but the color stability, which owe to its higher the Highest Occupied Molecular Orbital (HOMO) energy levels of 6.2 eV. We expect our work will be useful to optimizing the blue OLEDs structure to enhancing the color property.
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Qianqian Du, Qianqian Du, Wenjun Wang, Wenjun Wang, Shuhong Li, Shuhong Li, Qingru Wang, Qingru Wang, Shuzhen Xia, Shuzhen Xia, Bingyuan Zhang, Bingyuan Zhang, Minghong Wang, Minghong Wang, Quli Fan, Quli Fan, "Enhanced color purity of blue OLEDs based on well-design structure", Proc. SPIE 9941, Organic Light Emitting Materials and Devices XX, 99411O (23 September 2016); doi: 10.1117/12.2235909; https://doi.org/10.1117/12.2235909
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