Optimizing structure for constructing a highly efficient inverted top-emitting organic light-emitting diode with stable electroluminescent spectra

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 reso- nance wavelength corresponding to the free emission of the emitter. Using a doped f...

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Bibliographic Details
Published in:Journal of semiconductors 2014-02, Vol.35 (2), p.24-27
Main Author: 张小文 许积文 王华 魏斌 曾华荣 蒋雪茵 张志林
Format: Article
Language:English
Subjects:
Construction
Dichroism
Electroluminescence
Emittance
Organic light-emitting diodes
Semiconductors
Spectral emittance
Tuning
优化
共振波长
发射器
有机发光二极管
电致发光光谱
稳定
管具
结构
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Description
Summary: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 reso- nance 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.
ISSN:1674-4926
DOI:10.1088/1674-4926/35/2/023002