5 May 2006 Blue and white organic light-emitting devices employing dimeric trimeric phenylenvinylene derivative as single-emitting component
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Abstract
Two dimeric trimeric phenylenvinylene derivative 2, 5, 2', 5'-tetrakis (4'-fluorostyryl) biphenyl (P-F-TSB) and 2, 5, 2', 5'-tetra (p-trifluoromethylstyryl)-biphenyl (TFM-TSB) have been synthesized as new electroluminescent (EL) materials. P-F-TSB exhibits good color purity, high luminance of blue light-emission in organic light-emitting devices. Maximum brightness and luminous efficiency are of 1828 cd/m2 and of 1.92 cd/A, respectively. CIE coordinates are x=0.20 and y=0.22. Interestingly, we can fabricate single layer white light-emitting device using TFM-TSB as emitting layer. The broad electroluminescence emission band may attribute to long-wavelength excimer and electromer emission in addition to the blue component from singlet excited state of individual TFM-TSB molecule. Furthermore, white-light emission can also be obtained with a typical three-layer structure of ITO/ NPB (50 nm)/ TFM-TSB (50 nm)/ Alq3 (30 nm)/LiF/Al device. The maximum brightness of this device is 809 cd/m2 at 217 mA/cm2 and 13V, and the maximum luminous efficiency is 1.49 cd/A at 11 mA/ cm2 and 8V.
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Yu Duan, Yu Duan, Wenlong Jiang, Wenlong Jiang, Feng He, Feng He, Gang Cheng, Gang Cheng, Ping Chen, Ping Chen, Yi Zhao, Yi Zhao, Jingying Hou, Jingying Hou, Shiyong Liu, Shiyong Liu, Yuguang Ma, Yuguang Ma, } "Blue and white organic light-emitting devices employing dimeric trimeric phenylenvinylene derivative as single-emitting component", Proc. SPIE 6192, Organic Optoelectronics and Photonics II, 61921J (5 May 2006); doi: 10.1117/12.660484; https://doi.org/10.1117/12.660484
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