Blue and white organic light-emitting devices employing dimeric trimeric phenylenvinylene derivative as single-emitting component

Yu Duan; Wenlong Jiang; Feng He; Gang Cheng; Ping Chen; Yi Zhao; Jingying Hou; Shiyong Liu M.D.; Yuguang Ma

doi:10.1117/12.660484

5 May 2006 Blue and white organic light-emitting devices employing dimeric trimeric phenylenvinylene derivative as single-emitting component

Yu Duan, Wenlong Jiang, Feng He, Gang Cheng, Ping Chen, Yi Zhao, Jingying Hou, Shiyong Liu M.D., Yuguang Ma

Author Affiliations +

Proceedings Volume 6192, Organic Optoelectronics and Photonics II; 61921J (2006) https://doi.org/10.1117/12.660484
Event: SPIE Photonics Europe, 2006, Strasbourg, France

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, Wenlong Jiang, Feng He, Gang Cheng, Ping Chen, Yi Zhao, Jingying Hou, Shiyong Liu M.D., and 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); https://doi.org/10.1117/12.660484

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KEYWORDS

Electroluminescence

Organic light emitting diodes

Molecules

Luminous efficiency

Excimers

Absorption

Luminescence

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