欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
将腈类黄色荧光染料（2Z，2’Z）-3，3’-（1，4-phenylene）bis（2-phenylaerylonitrile）（BPhAN）掺杂到poly（N-vinylcarbazole）（PVK）中作发光层，2，9-dimethyl-4，7-diphenyl-1，10-phenanthroline（BCP）作电子传输层和空穴阻挡层，制备了结构为Indium-tinoxide（ITO）／PVK：BPhAN／BCP／Mg：Ag的双层有机电致发光器件。通过调节BPhAN掺杂质量百分比（2wt％，4wt％，6Wt％），测试了器件在不同电压下的光谱特性，研究了Forster能量转移和直接载流子俘获在发光过程中的作用。结果表明，当掺杂浓度为4wt％时可实现色度较好的白光，随着电压从6V增大到16V，CIE色坐标从（0．33，0．37）变化到（0.32，0．33），在白光区域有微小蓝移，这是由于随着电压的增大，能量转移效率和直接载流子俘获效率都降低，BPhAN黄光减弱,PVK发射的蓝光增强。
英文摘要：
A white organic light-emitting device with a blend polymeric emissive system consisting of a novel nitrile fluorescence （2Z, 2＇ Z）-3, 3＇-（1,4-phenylene） bis（2-phenylacrylonitrile） （BPhAN） as dopant and poly（N-vinylcarbazole） （PVK） as host was fabricated. 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline （BCP） was introduced into bilayer device as an electron transporting layer （HTL） and a hole blocking layer （HBL）, respectively. By adjusting the doping ratio of BPhAN, a series of devices with different concentration proportion of PVK ： BPhAN were constructed. The photol （PL） and electrol （EL） characteristics of the devices were systemically studied. The Forster energy transfer mechanisms and direct carrier trapping mechanisms were specially investigated. The results showed that effective Forster energy transfer from PVK to BPhAN existed in the blending system as well as carrier trapping. However, at the identical bias voltage, the performance of devices was affected mainly by the carrier trapping mechanisms. Nevertheless, at different bias voltages, the performance of devices was affected by both of the two mechanisms. When the doping ratio of BPhAN reached 4 wt%, bright white light was obtained. The peaks of EL spectra were located at 425 and 556 nrn corresponding to the Commissions Internationale De L＇ Eclairage （CIE） coordinates of （0.33, 0. 37） at 6 V and （0. 32, 0. 33） at 16 V, respectively. The slight shift of CIE coordinates was attributed to that energy transfer probability from PVK to BPhAN and BPhAN charge carrier trapping efficiency both decreased with the increase in voltages.
同期刊论文项目
同项目期刊论文
Study?on?temperature?characteristics?of?organic?light-emitting?diodes?based?on?tris-(8-hydroxylquino
Efficient Blue Organic Light-emitting Diodes with Simple Structure Based on N,N'-bis(1-naphthy)-N,N'
Efficient white organic light-emitting devices using a thin 4,4'-bis(2,2'-diphenylvinyl)-1,1'-diphen
Self-assembly of Tio2/polypyrrole nanocomposite ultrathin films and application for an NH3 gas senso
Luminescent Enhancement of Heterostructure Organic Light-Emitting Devices Based on Aluminum Quinolin
Influences of fluorine auxochrome in fluorene molecular electroluminescent material on optoelectroni
Efficient bright white organic light-emitting diode based on non-doped ultrathin 5,6,11,12-tetraphen
Fabrication and nonlinear optical properties of polymeric thin films doped with a novel tricyanofura
Low roll-off power efficiency of organic light-emitting diodes consisted of nondoped ultrathin phosp
X-ray photoelectron spectroscopy characterization of the interface between Ag electrode and PVDF fil
Spectral Characteristics of White Organic Light-emitting Diodes Based on Novel Phosphorescent Sensit
Color-tunable organic light-emitting devices using a thin N,N prime -bis-(1-naphthyl)-N,N prime -dip
Electron irradiation effects on the properties of heavily phosphorus-doped a-Si ,H films prepared fr
Efficeng small molecular and polymer organic devices using bis[2-(4-tert-butylpheny)benzothiazolato-
Study on tempeature characteristica of organic light-emitting diodes based on tris-(8-hydrocylquinol
Influence of PVK: NPB hole transporting layer on the charcateristics of organic light-emitting devic
Conducting polymericnanoparticles synthesized in reverse micelles and their gas sensitivity based on
Low energy emission bands in a small molecular fluorene derivative for organic light-emitting dioeds
Fiexible organic light-emitting diodes with improved performance by insertion of an UV-sensitive lay
期刊信息
位置：