咔唑
磷光
材料科学
色度
发光效率
显色指数
亮度
荧光
高颜色
聚合物
电致发光
光电子学
二极管
发光二极管
光学
光化学
化学
纳米技术
复合材料
图层(电子)
物理
图像(数学)
彩色图像
人工智能
计算机科学
图像处理
作者
Shanghui Ye,Changlong Yin,Zhou Zhou,Tian-Qing Hu,Yonghua Li,Lü Li,Linghai Xie,Wei Huang
摘要
ABSTRACT A blue fluorescent polymer based on poly(vinyl carbazole) (PVK) and terfluorene, combined to make a chemical hybrid at the carbazole unit (PVK‐TF), is fully characterized in this study. PVK‐TF shows useful emission features, such as peaks at 400, 420, 437, 460, and 496 nm, depending on the processing conditions. It possesses a relatively high triplet energy level (2.23 eV), electrochemical stability, good film‐forming ability, and morphological stability. Based on this blue fluorescent material, highly efficient orange phosphorescent polymer light‐emitting diodes (PLEDs) were fabricated with a maximum efficiency of 21.99 cd A −1 , and a maximum luminance of 19552.3 cd m −2 . Single‐layer hybrid white PLEDs were developed, with a high color rendering index of 81.9 that emitted across the whole visible spectrum from 380 to 780 nm, corresponding to the Commission International de L'Eclairage coordinates x , y values of around (0.38, 0.40) and CCT = 3774, with a maximum current efficiency of 10.69 cd A −1 , and a maximum brightness of 15723.3 cd m −2 . © 2014 Wiley Periodicals, Inc. J. Polym. Sci. Part B: Polym. Phys. 2014 , 52 , 587–595
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