摘要
以1,3,4-噁二唑/螺-9,9′-氧杂蒽芴螺环化合物2,5-双(2(2-螺-9,9′-氧杂蒽芴苯基)-1,3,4-噁二唑(D[2-SFXP]-o-OXD)为主体材料,以[Ir(pq)2acac]和[Ir(mppy)_(3)]分别为红、绿色磷光客体材料,通过溶液加工法,将红色磷光客体材料[Ir(pq)2acac]和绿色磷光客体材料[Ir(mppy)3]分别以6%和4%的质量浓度掺入母体中作为发光层,成功地制备了基于主体材料D[2-SFXP]-o-OXD的红、绿色磷光器件。研究结果表明,主体材料能够有效地将能量分别转移给红色和绿色磷光客体材料,其最大电流效率分别可达5.7 cd/A和15.8 cd/A。然而,由于主客体间能级匹配欠佳,导致器件效率随着驱动电压上升而迅速降低。因此,通过主体材料和器件结构优化有望进一步改善器件性能,进而制备稳定高效的有机电致发光器件。
1,3,4-oxadiazole/spiro-9,9′-xanthene-fluorene spirocyclic compound 2,5-bis(2(2-spiro‐9,9′‐xanthene-fluorene phenyl)-1,3,4-oxadiazole(D[2-SFXP]-o-OXD)was used as the host material,[Ir(pq)2acac]and[Ir(mppy)_(3)]were used as the red and green phosphorescent vip material that were doped into the host material with doping concentration of 6%and 4%as the emitting layers to fabricate the red and green phosphorescent devices by solution-processing method,respectively.The device results showed that the host material could effectively transfer the energy to the red and green phosphorescent vip materials,respectively,and the maximum current efficiencies of the devices were up to 5.7 cd/A and 15.8 cd/A,respectively.However,the device efficiencies decreased rapidly as the increasing of the driving voltage due to the poor energy level matching between the host and vip.Therefore,the improvement of the device performance could be achieved for further step through optimizing of the host material and device structure.Then,the stable and high efficient organic electroluminescent devices could be prepared.
作者
赵祥华
王睿颖
周玉强
张新稳
郑芝蔓
ZHAO Xianghua;WANG Ruiying;ZHOU Yuqiang;ZHANG Xinwen;ZHENG Zhiman(College of Chemistry and Chemical Engineering,Xinyang Normal University,Xinyang 464000,China;National Key Laboratory for Organic Electronics and Information Displays,Institute of Advanced Materials,Nanjing Universityof Posts and Telecommunications,Nanjing 210023,China)
出处
《信阳师范大学学报(自然科学版)》
2025年第3期343-347,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(61405170)
信阳师范大学南湖学者青年项目。
