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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%.
Low-voltage and high-efficiency organic white light devices were fabricated using Bphen: Li / WO3 as the charge generation layer. In the experiment, a high conductivity carrier injection and transport layer was introduced into the device to reduce the driving voltage of the device. By laminating two low-voltage white light devices vertically through the charge generation layer, a low-voltage, high-efficiency organic white light device is obtained. Compared with single light-emitting device, the performance of the device has greatly increased in brightness and efficiency, Current efficiency of 17cd / A, the same current density, laminated devices, the efficiency of about 2.3 times the traditional device, at the same time due to the introduction of the laminated structure of high conductivity of the carrier transport layer, effectively reducing the The driving voltage of the device significantly improves the lumen efficiency of the white light device, and the lumen efficiency of the stacked device is increased by 53% compared with that of the single light emitting device.