The authors present high-color-rendering-index (CRI) white polymer light-emitting electrochemical cells (PLECs) based on ionic host-guest systems. PLECs were fabricated with blend films composed of a blue fluorescent cationic π-conjugated polymer, poly(9,9-bis[6′-(N,N,N,-trimethylammonium)hexyl]fluorine-co-alt-1,4-phenylene)bromide (PFN⁺Br⁻), used as a host, and a red phosphorescent cationic iridium complex, [Ir(ppy)₂(biq)]⁺(PF₆)⁻ (where (ppy)⁻ = 2-phenylpyridinate and biq = 2,2′-biquinoline), used as a guest. By optimizing the composition of PFN⁺Br⁻ and [Ir(ppy)₂(biq)]⁺(PF₆)⁻ in the active layers, white light emission with Commission Internationale de l'Eclairage (CIE) coordinates of (x = 0.28, y = 0.31) and a very high CRI of 95.8 was achieved through mixing of blue and red light at an applied voltage of 4.0 V. The white light emissions were obtained at a low [Ir(ppy)₂(biq)]⁺(PF₆)⁻ concentration (PFN⁺Br⁻:[Ir(ppy)₂(biq)]⁺(PF₆)⁻ = 1:0.01 (mass ratio)), showing that [Ir(ppy)₂(biq)]⁺(PF₆)⁻ acts as a suitable energy acceptor. The emission mechanism of the ionic host-guest PLECs can be explained by Förster resonance energy transfer (FRET) and Dexter energy transfer (DET) from the excited PFN⁺Br⁻ to [Ir(ppy)₂(biq)]⁺(PF₆)⁻. Utilization of ionic host-guest PLECs is a very promising method for realizing white light-emitting devices with very high CRI.

作者介绍了基于离子型主客体系统的高显色指数（CRI）白色聚合物发光电化学电池（PLEC）。PLEC用共混膜制成，共混膜由蓝色荧光阳离子π共轭聚合物，聚（9,9-双[6'-（N，N，N，-三甲基铵）己基]氟-共-alt-1,4-组成亚苯基）溴化镁（PFN ⁺溴^- ），作为宿主，和红色磷光阳离子铱络合物，[的Ir（ppy）₂（BIQ）] ⁺（PF ₆）^- （其中，（PPY）^-  = 2- phenylpyridinate和biq = 2,2'-biquinoline），用作来宾。通过优化PFN的组成⁺溴^-和[的Ir（ppy）₂（BIQ）] ⁺（PF ₆）^-中的有源层，白光委员会国际照明委员会（CIE）发射坐标（x = 0.28，Y = 0.31）和通过在4.0 V的施加电压下混合蓝光和红光，可以实现95.8的非常高的CRI。白光发射是在低[Ir（ppy）₂（biq）] ⁺（PF ₆）^-浓度（ PFN ⁺ Br ^-：[Ir（ppy）₂（biq）] ⁺（PF ₆）^-  = 1：0.01（质量比）），表明[Ir（ppy）₂（biq）] ⁺（PF ₆）^-充当合适的能量受体。离子主客体PLECS的发射机构可以通过共振能量转移（FRET）和从激发PFN德克斯特能量转移（DET）进行说明⁺溴^-为[的Ir（ppy）₂（BIQ）] ⁺（PF ₆）^-。利用离子型客体PLEC是一种非常有前途的方法，可以实现具有很高CRI的发白光器件。