器件结构对蓝光TADF-OLED光电性能的影响

采用真空热蒸镀法,以热活化延迟荧光(TADF)材料为主体材料、发光材料为客体材料制备混合薄膜发光层,以提高蓝色荧光材料的OLED发光效率.当OLED器件结构为ITO/HAT-CN(5 nm)/TAPC(30 nm)/TCTA(10 nm)/Blue-Or:DMAC-DPS(30％,30 nm)/DPEPO(10 nm)...

Influence of device structure on photo electric properties of TADF-OLED with blue fluorescence

In order to improve the OLED luminous efficiency of blue fluorescent materials, a hybrid thin film luminescent layer is prepared by using the vacuum thermal evaporation method with thermally activated delayed fluorescence(TADF) material as the main material and luminescent material as the guest material. When the OLED structure is ITO/HAT-CN(5 nm)/TAPC(30 nm)/TCTA(10 nm)/Blue-Or:DMAC-DPS(30%,30 nm)/DPEPO(10 nm)/Bphen(30 nm)/LiF(1 nm)/Al(70 nm), the performance of optoelectronic devices is the best. The external quantum efficiency, current efficiency and power efficiency of the blue TADF-OLED are 12.39%, 21.68 CD/A and 19.44 LM/W respectively. It is found that the photoelectric characteristics of TADF-OLED can be improved by changing the doping material and adding hole injection layer. With the combination of the experimental content and the frontier scientific research in this field, the photoelectric performance of OLED devices is stable and the experimental phenomenon is remarkable, which is suitable for the introduction of undergraduate experimental courses. Through the comprehensive experiment, students can lay a solid foundation for the experiment, understand the research hot spots, and know the latest scientific research trends.