摘要
以铱配合物Ir(tfmppy)2(tpip)(1,tfmppy=4-三氟甲基苯基吡啶,tpip=四苯基膦酰胺)和Ir(dfp-py)2(tpip)(2,dfppy=4,6-二氟苯基吡啶)为发光中心分别制备了绿色和蓝绿色有机电致发光器件ITO/TAPC(1,1-bis[4-[N,N-di(p-tolyl)amino]phenyl]cyclohexane,60 nm)/Ir(Ⅲ)complex(x%,质量分数)∶Sim-CP(3,5-bis(9-carbazolyl)tetraphenylsilane,40 nm)/TPBi(2,2',2″-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole,60 nm)/LiF(1 nm)/Al(100 nm)。配合物Ir(tfmppy)2(tpip)掺杂质量分数为6%时,以其为发光中心的绿色器件在5 930 cd/m2亮度下的最大电流效率为47.10 cd/A,CIE色坐标为(0.28,0.65),在16.4V驱动电压下的最大发光亮度为38 674 cd/m2。配合物Ir(dfppy)2(tpip)掺杂质量分数为10%时,以其为发光中心的蓝绿色器件在3 175 cd/m2亮度下的最大电流效率为14.80 cd/A,色坐标为(0.15,0.50),在11.8 V驱动电压下的最大发光亮度为25 985 cd/m2。
Green and bluish-green organic light emitting diode(OLEDs) devices based on Ir(tfmppy)2(tpip) [1,tfmppy=4-trifluoromethylphenylpyridine,tpip=tetraphenylimido-diphosphinate] and Ir(dfppy)2(tpip) [2,dfppy=4,6-difluorophenylpyridine] as emitters were constructed with the device structure of ITO / TAPC(1,1-bis[4-[N,N-di(p-tolyl)amino]phenyl]cyclohexane,60 nm)/Ir(Ⅲ) complex(x%,mass fraction): SimCP(3,5-bis(9-carbazolyl)tetraphenylsilane,40 nm)/TPBi(2,2′,2″-(1,3,5-benzinetriyl)-tris(1-phenyl-1-H-benzimidazole,60 nm)/LiF(1 nm)/Al(100 nm).Green device with 6% 1 doped concentration showed a maximum current efficiency of 47.10 cd/A at 5 930 cd/m2,a maximum brightness of 38 674 cd/m2 at 16.4 V with(0.28,0.65) at Commission Internationale de L'Eclairage(CIE) coordinates.Bluish-green device with 10% 2 doped concentration exhibited a current efficiency of 14.80 cd/A at 3 175 cd/m2,a brightness of 25 985 cd/m2 at 11.8 V CIE coordinates of(0.15,0.50).
出处
《发光学报》
EI
CAS
CSCD
北大核心
2013年第1期92-97,共6页
Chinese Journal of Luminescence
基金
国家自然科学基金(20971067)资助项目
关键词
铱配合物
有机电致发光器件
亮度
效率
电流密度
iridium(Ⅲ) complexes
organic light emitting diodes
luminance
efficiency
current density