Color tunable metal-cavity organic light-emitting diodes with fullerene layer
Color tunable metal-cavity organic light-emitting diodes with fullerene layer
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DOI：
10.1063/1.1887830
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发表时间：
2005-04
影响因子：
3.2
通讯作者：
Sijin Han;Changjun Huang;Zhenghong Lu
中科院分区：
文献类型：
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作者：
Sijin Han;Changjun Huang;Zhenghong Lu
利用半波长全金属腔器件进行光学设计，获得了单发射层有机发光二极管（OLED）的红、绿、蓝三基色。利用富勒烯作为电子传输层，进一步提高了腔体器件的电学性能和腔体OLED的光学调谐性能。与以Alq为电子传输层的传统腔体OLED相比，该富勒烯层导致驱动电压降低~ 2V，功率效率提高~ 20%。用法布里-珀罗腔理论很好地预测了腔型有机发光二极管的发射光谱。在谐振波长处观察到光谱变窄和强度增强，这可以用光模密度在微腔内的重新分布来解释。通过改变氧化铟锡厚度、空穴传输层厚度和电子传输厚度来改变腔长来调整发射颜色的方案，单独或…
Three primary colors, red, green, and blue have been obtained from a single-emission layer organic light-emitting diode (OLED) through optical design using a half-wavelength all-metal-cavity device. Fullerene is used as an electron transport layer to further enhance the electrical performance of the cavity device and the optical tuning of the cavity OLED. This fullerene layer results in a ∼2V driving voltage reduction and a ∼20% increase in power efficiency, as compared with traditional cavity OLED with Alq as the electron transport layer. The emissive spectra for the cavity OLEDs are well predicted by the Fabry–Perot cavity theory. The spectral narrowing and intensity enhancement at the resonance wavelength have been observed and are explained by the redistribution of optical-mode density inside the microcavity. Schemes to tune the emissive color by varying the cavity length through variations of indium tin oxide thickness, hole transport layer thickness, and electron transport thickness, individually or...