Blue organic light emitting devices(OLEDs) with Alq, PBD, BBOT or F OXD as the electron transport layer were fabricated by a high vacuum multisource type organic molecular deposition system. The effect of various elec...Blue organic light emitting devices(OLEDs) with Alq, PBD, BBOT or F OXD as the electron transport layer were fabricated by a high vacuum multisource type organic molecular deposition system. The effect of various electron transport layers on the performances of OLED was studied. The result indicates that the performances of devices with electron transport layer added between emitter and cathode are increased greatly. It is found that device: ITO/TPD/PPCP/Alq/Al is optimal in structure compared with other devices. Its turn on voltage is 4 V. Its maximal brightness is 2 000 cd/m 2 and its maximal efficiency is 0.36 lm/W.展开更多
左氧氟沙星(LOFX)是一种知名的抗菌药物,它的价格非常便宜,且有成熟的合成和纯化技术.本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中.通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详...左氧氟沙星(LOFX)是一种知名的抗菌药物,它的价格非常便宜,且有成熟的合成和纯化技术.本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中.通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详细地表征了LOFX的热学及光物理特性.LOFX有高的分解温度,为327°C;HOMO、LUMO能级分别为-6.2和-3.2 e V,光学带隙为3.0 e V.以LOFX作为客体材料,掺杂在主体材料4,4'-二(9-咔唑)联苯(CBP)中制备了蓝光OLED,该器件的电致发光(EL)发射峰位于452 nm,最大亮度为2315 cd·m-2.进一步,选择8-羟基喹啉铝(Alq3)作为参考材料,分别以LOFX和Alq3作为电子传输材料制备了结构相同的单载流子器件和绿色磷光OLED.在相同的电压下,以LOFX作为电子传输材料的单载流子器件的电流密度比以Alq3作为电子传输材料的单载流子器件更高.同时,以LOFX作为电子传输材料的绿色磷光OLED获得更高的器件效率.从这些EL性能可以看出,LOFX同时也是一很好的电子传输材料.展开更多
文摘Blue organic light emitting devices(OLEDs) with Alq, PBD, BBOT or F OXD as the electron transport layer were fabricated by a high vacuum multisource type organic molecular deposition system. The effect of various electron transport layers on the performances of OLED was studied. The result indicates that the performances of devices with electron transport layer added between emitter and cathode are increased greatly. It is found that device: ITO/TPD/PPCP/Alq/Al is optimal in structure compared with other devices. Its turn on voltage is 4 V. Its maximal brightness is 2 000 cd/m 2 and its maximal efficiency is 0.36 lm/W.
基金supported by the National Natural Science Foundation of China(50833001)National Key Basic Research Program of China(973)(2011CB933300)Research Starting Foundation for Doctoral Program of Shenyang Normal University,China(054-55440109013)~~
基金supported by the Program for New Century Excellent Talents in University of Ministry of Education of China(NCET-13-0927)International Science & Technology Cooperation Program of China(2012DFR50460)+1 种基金National Natural Science Foundation of China(61307029,21101111)Shanxi Provincial Key Innovative Research Team in Science and Technology,China(2012041011)~~
文摘左氧氟沙星(LOFX)是一种知名的抗菌药物,它的价格非常便宜,且有成熟的合成和纯化技术.本文中首次将LOFX作为一种蓝光发光材料和电子传输材料应用于有机电致发光器件(OLED)中.通过热重分析、UVVis吸收光谱、发射光谱以及循环伏安曲线详细地表征了LOFX的热学及光物理特性.LOFX有高的分解温度,为327°C;HOMO、LUMO能级分别为-6.2和-3.2 e V,光学带隙为3.0 e V.以LOFX作为客体材料,掺杂在主体材料4,4'-二(9-咔唑)联苯(CBP)中制备了蓝光OLED,该器件的电致发光(EL)发射峰位于452 nm,最大亮度为2315 cd·m-2.进一步,选择8-羟基喹啉铝(Alq3)作为参考材料,分别以LOFX和Alq3作为电子传输材料制备了结构相同的单载流子器件和绿色磷光OLED.在相同的电压下,以LOFX作为电子传输材料的单载流子器件的电流密度比以Alq3作为电子传输材料的单载流子器件更高.同时,以LOFX作为电子传输材料的绿色磷光OLED获得更高的器件效率.从这些EL性能可以看出,LOFX同时也是一很好的电子传输材料.