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中文摘要：
以Bphen：Li／WO3作为电荷产生层制备了低压、高效有机叠层白光器件．实验中，首先在器件中引入高导电性的载流子注入和传输层，有效降低了器件的驱动电压，然后通过电荷产生层垂直堆叠两个低压白光器件，获得了低压、高效有机叠层白光器件．叠层器件性能与单发光单元的器件相比较，其亮度及效率均有大幅提高，叠层器件的最大电流效率达到了17cd／A，在相同的电流密度下，叠层器件的效率约为传统器件的2．3倍，同时由于在叠层结构中引入了高导电性的载流子传输层，有效降低了器件的驱动电压，显著改善了白光器件的流明效率．叠层器件的流明效率相对于单发光单元器件提高了53％．
英文摘要：
We report a white tandem organic light-emitting device （TOLED） with high efficiency and low drive voltage using Bphen： Li/WO3 as the interconnecting layer. The TOLED have been fabricated by connecting two low-voltage driving white units with conductive transport layers. The tandem two-unit device produces two higher luminance efficiency than that expected of a single-unit device. A maximum efficiency of 17cd/A is achieved by the tandem device comprised of two white-fluorescent OLEDs. The power efficiency of tandem white organic light-emitting device is enhanced by 53% as compared to the control device.
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