Alternated red-emitting organic light-emitting diode
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摘要: 介绍了具有可调节发光光谱的高效红光有机发光二极管(OLED)器件，利用具有高三重态能量的9.9-螺二芴二苯基氧化磷(SPPO1)作为发光层的主体材料及空穴阻挡层，二(1-苯基异喹啉)(乙酰丙酮)合铱(III) (Ir(piq)2(acac))作为客体发光材料，在发光层内SPPO1的能量分别由福斯特和迪克斯特传递到Ir(piq)2(acac)的单重态和三重态从而发出红色磷光，通过调节磷光客体材料的比例得到最优器件结构，从而得到具有较好发光效率和发光亮度并可调节色纯的有机发光二极管器件。Abstract: The article describes a highly effective alternated red-emitting organic light-emitting diode(OLED), which uses 9,9-spirobifluoren-2-yl-diphenyl-phosphine oxide (SPPO1) with high triple state as the host and hole-blocking layer and Bis(1-phenyl-isoquinoline) (Acetylacetonato)iridium(III) (Ir(pig)2(acac)) as objected emitting materials. The energy of SPPO1 in the luminescent layer, is respectively transferred by a Frster or Dexter process to the single state or triple state of Ir(pig)2(acac) and then the device shows red light emitting. The improvements in OLED performance and the tunability of emitting light are realized through regulating the ratio of Ir(pig)2(acac).
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