Enhanced efficiency of organic light-emitting devices with metallic electrodes by integrating periodically corrugated structure
Enhanced efficiency of organic light-emitting devices with metallic electrodes by integrating periodically corrugated structure
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通过集成周期性波纹结构提高具有金属电极的有机发光器件的效率
DOI：
10.1063/1.3680595
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发表时间：
2012-01-30
影响因子：
4
通讯作者：
Sun, Hong-Bo
中科院分区：
文献类型：
--
作者：
Bi, Yan-Gang;Feng, Jing;Sun, Hong-Bo
在有机电致发光器件（OLED）中，以表面等离子体激元（SPP）模式捕获的光子在金属电极/有机物界面处会导致大量的能量损失。我们证明了有效的耦合SPP模式从两个金属电极之一，通过将周期性的波长尺度转换器集成到设备结构。在适当的光栅周期下，波纹结构的OLED的效率提高了30%。通过数值模拟吸收光谱和场分布，验证了SPP的有效外耦合。(C)2012年美国物理学会。[doi：10.1063/1.3680595]
Photons trapped in form of surface-plasmon polariton (SPP) modes associated with the metallic electrode/organic interface results in a large energy loss in organic light-emitting devices (OLEDs). We demonstrate efficient outcoupling of SPP modes from one of two metal electrodes by integrating a periodic wavelength-scale corrugation into the device structure. 30% enhancement in efficiency has been obtained from the corrugated OLEDs with appropriate grating period. The efficient outcoupling of the SPPs has been verified by numerical simulations of both absorption spectra and field distribution. (C) 2012 American Institute of Physics. [doi:10.1063/1.3680595]