光子学报, 2019, 48 (4): 0423004, 网络出版: 2019-04-28
光谱角度特性良好的叠层暖白光有机电致发光器件的研究
Research on Tandem Warm White Organic Light-emitting Devices with Fine Viewing Angle Property of Spectrum
有机电致发光器件 电荷产生单元 叠层暖白光器件 微腔效应 SimOLED模拟 Organic light-emitting device Charge generating layer Tandem warm white light device Microcavity effect SimOLED simulation
摘要
采用CsN3: Bphen/Al/HAT-CN为电荷生成单元, 制备了光谱高度稳定的高效暖白光有机电致发光器件.正面出射时, 暖白光器件的最大电流效率和功率效率分别为45.4 cd/A、28.5 lm/W; 当工作电流密度从10 mA/cm2增加到30 mA/cm2时, 器件色坐标几乎不变; 相对色温由3 135 K变至3 147 K, 均在暖白光范围内, 这可有效避免照明器件的蓝光伤害.当观察角度由0增加到60°时, 器件光谱峰值波长没有明显移动, 色坐标变化为(0.02, 0.03), 且光强分布接近理想的朗伯特体, 呈现出良好的角度特性.
Abstract
A novel charge generation unit comprising of CsN3: Bphen/Al/HAT-CN was employed to fabricate an efficient tandem white organic light-emitting device. In normal direction, the maximum efficiencies are 45.4 cd/A and 28.5 lm/W, respectively. When the operating current density varies from 10 mA/cm2 to 30 mA/cm2, there are nearly no variations in color coordinates and the correlated color temperature slightly changes from 3 135 K to 3 147 K. The emissions are all within the defined warm white region, as is beneficial to the alleviation of blue-light hazards. As the viewing angles increases from 0 to 60° no obvious shift of the emission peaks was observed and the color coordinates and slight variation of(0.02, 0.03) in color coordinates was occurred. Moreover, the emission pattern was very closed to the desirable Lambertian distribution.
许万里, 吴志军. 光谱角度特性良好的叠层暖白光有机电致发光器件的研究[J]. 光子学报, 2019, 48(4): 0423004. XU Wan-li, WU Zhi-jun. Research on Tandem Warm White Organic Light-emitting Devices with Fine Viewing Angle Property of Spectrum[J]. ACTA PHOTONICA SINICA, 2019, 48(4): 0423004.
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