We synthesized a novel red-emitting iridium(III) complex, bis[2-(5-(9H-carbazole-9-yl)thiophene-2-yl)benzo[d]thiazole]iridium(III)acetylacetonate ([(CTBT)2Ir(acac)]), for use in phosphorescent organic light-emitting diodes. The photophysical and electrochemical properties of [(CTBT)2Ir(acac)] were characterized using photoluminescence (PL) and cyclic voltammetry. The photophysical properties of [(CTBT)2Ir(acac)] included PL emission at 630 nm. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels of [(CTBT)2Ir(acac)] were calculated to be −5.14 and −2.83 eV, respectively. Phosphorescent organic light-emitting diodes with a configuration of ITO/PEDOT:PSS (30 nm)/TAPC (30 nm)/TPBi (12.5 nm):TCTA (12.5 nm):dopant (3%, 5%, 10%)/TSPO1 (35 nm)/LiF (1 nm)/Al (100 nm) were fabricated and characterized. The fabricated device doped with 5% [(CTBT)2Ir(acac)] showed a high luminous efficiency of 2.06 cd/A, maximum external quantum efficiency of 4.32% at 4 V, maximum outstanding luminance of 398.8 cd/m2, and maximum power efficiency of 1.79 lm/W with Commission Internationale de L'Eclairage (CIE) coordinates of (0.69, 0.31).
我们合成了一种新型红色发光
铱(III)配合物--双[2-(5-(
9H-咔唑-9-基)
噻吩-2-基)苯并[d]
噻唑]
铱(III)
乙酰丙酮酸盐([(CTBT)2Ir(acac)]),用于
磷光有机发光二极管。利用光致发光(PL)和循环伏安法对[(CTBT)2Ir(acac)]的光物理和电
化学特性进行了表征。[(CTBT)2Ir(acac)]的光物理特性包括在 630 纳米波长处的光致发光。计算得出[(CTBT)2Ir(acac)]的最高占位分子轨道(HOMO)和最低未占位分子轨道(LUMO)能级分别为-5.14和-2.83 eV。制备并表征了配置为 ITO/PEDOT:PSS (30 nm)/
TAPC (30 nm)/TPBi (12.5 nm):TCTA (12.5 nm):掺杂剂 (3%、5%、10%)/T
SPO1 (35 nm)/
LiF (1 nm)/Al (100 nm) 的
磷光有机发光二极管。掺杂了 5%[(CTBT)2Ir(acac)]的器件的发光效率高达 2.06 cd/A,4 V 时的最大外部量子效率为 4.32%,最大突出亮度为 398.8 cd/m2,最大功率效率为 1.79 lm/W,国际照明委员会(CIE)坐标为 (0.69, 0.31)。