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首页> 外文期刊>RSC Advances >Oligoarylenes end-capped with carbazol-N-yl-carbazole as color tunable light-emitting and hole-transporting materials for solution-processed OLEDs
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Oligoarylenes end-capped with carbazol-N-yl-carbazole as color tunable light-emitting and hole-transporting materials for solution-processed OLEDs

机译：用咔唑-N-基咔唑封端的低聚亚芳基作为溶液加工的OLED的颜色可调发光和空穴传输材料

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摘要

A series of oligoarylenes end-capped with carbazol-N-yl-carbazole (CAr) were synthesized and characterized as color tunable light-emitting materials. Their photophysical, thermal, electrochemical, and electroluminescent properties as non-doped solution processed emitters and hole-transporters for OLEDs were investigated. They exhibited a bright blue to red fluorescence with hole-transporting properties and could form morphologically stable amorphous thin films. Simple structured solution-processed CAr-based OLEDs emitted stable colors spanning the entire visible spectrum (blue, light blue, green, yellow and red) with luminance efficiencies up to 13.73 cd A(-1). The CIE coordinates of the emitted colors were (0.67, 0.33) for red, (0.30, 0.61) for green and (0.19, 0.18) for blue, which are close to the pure red, green and blue colors. A solution-processed white OLED fabricated with a mixture of CAr radiated a white light with a luminance efficiency of 1.49 cd A(-1) at 4.7 mA cm(-2) and CIE coordinates of (0.33, 0.35).
机译：合成了一系列以咔唑-N-基-咔唑（CAr）封端的低聚亚芳基，并将其表征为颜色可调的发光材料。研究了它们作为OLED的未掺杂溶液处理的发射极和空穴传输剂的光物理，热，电化学和电致发光特性。它们表现出具有空穴传输性质的亮蓝色至红色荧光，并且可以形成形态稳定的非晶薄膜。简单的结构化溶液处理的基于CAr的OLED发出稳定的颜色，覆盖整个可见光谱（蓝色，浅蓝色，绿色，黄色和红色），亮度效率高达13.73 cd A（-1）。发出的颜色的CIE坐标对于红色为（0.67，0.33），对于绿色为（0.30，0.61），对于蓝色为（0.19，0.18），接近纯红色，绿色和蓝色。由CAr混合物制成的固溶处理白色OLED以4.7 mA cm（-2）的CIE坐标为（0.33，0.35）发射了白光，亮度为1.49 cd A（-1）。

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