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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
	Lian Duan ; Jing Xie ; DeQiang Zhang ; LiDuo Wang ; GuiFang Dong ; Juan Qiao ; Yong Qiu
	2010-10-12 ; 2010-10-12
关键词	Practical Experimental/ charge injection electric admittance hole mobility infrared spectra nanocomposites nanoparticles organic compounds organic light emitting diodes particle size thin films transmission electron microscopy ultraviolet spectra visible spectra ytterbium compounds/ nanocomposite thin film ytterbium fluoride N,N'-bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine organic light emitting diodes hole transport layer transmission electron microscopy nanoparticle size p-doped systems absorption spectrum hole mobility electric field electron injection tris(8- hydroxyquinolinolato)aluminum Alq/sub 3/ light-emitting layer YbF/sub 3// A7360R Electrical properties of organic compounds and polymers (thin films/low-dimensional structures) A7830J Infrared and Raman spectra in organic crystals A7840H Visible and ultraviolet spectra of other nonmetals A7865T Optical properties of organic compounds and polymers (thin films/low-dimensional structures) A6855 Thin film growth, structure, and epitaxy A6146 Structure of solid clusters, nanoparticles, nanotubes and nanostructured materials A7220F Low-field transport and mobility piezoresistance (semiconductors/insulators) B4260D Light emitting diodes/ YbF3/int F3/int Yb/int F/int YbF3/bin F3/bin Yb/bin F/bin
中文摘要	We present a nanocomposite thin film based on ytterbium fluoride (YbF/sub 3/) and N,N'bis(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB). The transmission electron microscopy study testified the presence of YbF/sub 3/ nanoparticles with a size of 3-5 nm, and these nanoparticles were observed to be uniformly dispersed in NPB. The conductance of YbF/sub 3/ (50%)-doped NPB was measured to be 1.76 * 10/sup -5/ S, much higher than the value of 5.81 * 10/sup -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 (YbF/sub 3/). The hole mobility of YbF/sub 3/ (50%)-doped NPB decreases to 7.31 * 10/sup -5/ cm/sup 2//(V s) at an electric field of 4 * 10/sup 5/ V/cm, while that of pure NPB film is 5.87 * 10/sup -4/ cm/sup 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 YbF/sub 3/-doped NPB as the HTL and tris(8- hydroxyquinolinolato)aluminum (Alq/sub 3/) as the electron transport and light-emitting layer shows a luminous efficiency of 4.50 cd/A at 300 mA/cm/sup 2/, 20% higher than that of control device with pure NPB as the HTL.
语种	英语
出版者	American Chemical Society ; USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80947]
专题	清华大学
推荐引用方式 GB/T 7714	Lian Duan,Jing Xie,DeQiang Zhang,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	Lian Duan.,Jing Xie.,DeQiang Zhang.,LiDuo Wang.,GuiFang Dong.,...&Yong Qiu.(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	Lian Duan,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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