We have investigated the relationship between the energy levels of an emissive layer and the modulation rate of organic light-emitting diodes (OLEDs) based on a distyrylbenzene derivative, 1,4-bis[2-[4-[- di(p-tolyl)amino]phenyl]vinyl]benzene (DSB). By utilizing DSB as an emitting material, a high modulation rate can be realized because of the short fluorescence lifetime of of DSB. Furthermore, we also found that an energy gap between an emissive layer and an adjacent organic layer is an important parameter to improve modulation rate. DSB-doped 4,4-bis(2,2-ditolylvinyl)biphenyl is the best combination of all the organic materials used in this study, and the fastest cutoff frequency of has been achieved for the OLED in spite of the large emitting area of .
© 2007 Optical Society of AmericaFull Article | PDF Article
Takeshi Fukuda, Masakazu Ohashi, Bin Wei, Tomoko Okada, Musubu Ichikawa, and Yoshio Taniguchi
Opt. Lett. 32(9) 1150-1152 (2007)
D. F. Jiang, Y. Yin, G. Z. Ran, and B. Zhang
J. Opt. Soc. Am. B 28(1) 89-92 (2011)
M. Y. Zhang, F. F. Wang, N. Wei, P. C. Zhou, K. J. Peng, J. N. Yu, Z. X. Wang, and B. Wei
Opt. Express 21(S1) A173-A178 (2013)