This study reports the fabrication of a highly efficient, very high color-rendering index (CRI) white organic light-emitting diode (OLED) using five organic dyes doped into two different phosphorescent and fluorescent emissive layers separated by a high triplet-energy interlayer. The resulting white OLED achieves a 93 CRI with a power efficiency of 23.3 ln W~(-1) at 100 cd m~(-2), or 14.3 lm W~(-1) at 1000 cd m~(-2). This high CRI is attributable to the five dyes employed in this design, which together emit a relatively wide spectrum that nearly covers the entire range of visible light. At the proper thickness, the interlayer enables the device to balance the distribution of carriers in the two emissive zones and achieve a maximum power efficiency while maintaining high CRI.
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机译：这项研究报告了一种高效，非常高的显色指数（CRI）白色有机发光二极管（OLED）的制造工艺，该方法使用了五种有机染料，这些染料掺入了由高三重态能量中间层隔开的两个不同的磷光和荧光发射层中。所得的白色OLED在100 cd m〜（-2）时达到93 CRI，功率效率为23.3 ln W〜（-1），在1000 cd m〜（-2）时达到14.3 lm W〜（-1）。高CRI归因于此设计中使用的五种染料，它们一起发出相对较宽的光谱，几乎覆盖了整个可见光范围。在适当的厚度下，中间层使器件能够平衡两个发射区中载流子的分布，并在保持高CRI的同时实现最大功率效率。
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