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	Nanocomposite thin film based on ytterbium fluoride and N,N'-Bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine and its application in organic light emitting diodes as hole transport layer
	Duan, Lian ; Xie, Jing ; Zhang, DeQiang ; Wang, LiDuo ; Dong, GuiFang ; Qiao, Juan ; Qiu, Yong
	2010-05-06 ; 2010-05-06
关键词	ELECTROLUMINESCENT DEVICES INJECTION LAYER PHTHALOCYANINE Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary
中文摘要	We present a nanocomposite thin film. based on ytterbium fluoride (YbF3) and N,N'-bis(1-naphthyI)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB). The transmission electron microscopy study testified the presence of YbF3 nanoparticles with a size of 3-5nm, and these nanoparticles were observed to be uniformly dispersed in NPB. The conductance of YbF3 (50%)-doped NPB was measured to be 1.76 x 10(-5) S, much higher than the value of 5.81 x 10(-8) S for pure NPB film. However, unlike other p-doped systems, the absorption spectrum study shows that there is no obvious interaction between the host (NPB) and the dopant (YbF3). The hole mobility of YbF3 (50%)-doped NPB decreases to 7.31 X 10(-5) cm(2)/(Vs) at an electric field of 4 x 105 V/cm, while that of pure NPB film is 5.87 x 10(-4) cm(2)/(V S). We believe that the improved film conductivity and decreased hole mobility can enhance the built-in field and thus favor the electron injection. Due to the improved balance of holes and electrons, a double-layer device with YbF3-doped NPB as the HTL and tris(8-hydroxyquinolinoiato)aluminum (Alq(3)) as the electron transport and light-emitting layer shows a luminous efficiency of 4.50 cd/A at 300 mA/cm(2), 20% higher than that of control device with pure NPB as the HTL.
语种	英语 ; 英语
出版者	AMER CHEMICAL SOC ; WASHINGTON ; 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/12501]
专题	清华大学
推荐引用方式 GB/T 7714	Duan, Lian,Xie, Jing,Zhang, DeQiang,et al. Nanocomposite thin film based on ytterbium fluoride and N,N'-Bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine and its application in organic light emitting diodes as hole transport layer[J],2010, 2010.
APA	Duan, Lian.,Xie, Jing.,Zhang, DeQiang.,Wang, LiDuo.,Dong, GuiFang.,...&Qiu, Yong.(2010).Nanocomposite thin film based on ytterbium fluoride and N,N'-Bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine and its application in organic light emitting diodes as hole transport layer..
MLA	Duan, Lian,et al."Nanocomposite thin film based on ytterbium fluoride and N,N'-Bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine and its application in organic light emitting diodes as hole transport layer".(2010).

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