Fig. 1.
Schematic structures of TOLEDs with (a) inverted, (b) normal structures and (c) BOLED.
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Xiaowen Zhang, Jiwen Xu, Hua Wang, Bin Wei, Huarong Zeng, Xueyin Jiang, Zhilin Zhang. Optimizing structure for constructing a highly efficient inverted top-emitting organic light-emitting diode with stable electroluminescent spectra[J]. Journal of Semiconductors, 2014, 35(2): 023002. doi: 10.1088/1674-4926/35/2/023002
X W Zhang, J W Xu, H Wang, B Wei, H R Zeng, X Y Jiang, Z L Zhang. Optimizing structure for constructing a highly efficient inverted top-emitting organic light-emitting diode with stable electroluminescent spectra[J]. J. Semicond., 2014, 35(2): 023002. doi: 10.1088/1674-4926/35/2/023002.
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Optimizing structure for constructing a highly efficient inverted top-emitting organic light-emitting diode with stable electroluminescent spectra
doi: 10.1088/1674-4926/35/2/023002
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Abstract
We demonstrate a highly efficient inverted top-emitting organic light-emitting diode (TOLED) having stable electroluminescent spectra and color coordination with variation of viewing angles by simply tuning the resonance wavelength corresponding to the free emission of the emitter. Using a doped fluorescent emitting system, the inverted TOLED exhibits an enhanced maximum current efficiency of 19 cd/A and a power efficiency of 17 lm/W, which are much higher than those (11 cd/A and 5 lm/W) of the counterpart with normal structure, although both TOLEDs behave with similar stable electroluminescent spectra characteristics. The results indicate that we provide a simple and effective method of constructing an excellent inverted TOLED for potentially practical applications. -
References
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