基于FHQZn发光的新结构有机黄光器件

利用一种新型材料(E)-2-(2-(9H-fluoren-2-yl)vinyl)quinolato-Zinc(FHQZn)制备了一种新结构的黄光OLED,器件的结构为:indium-tinoxide(ITO)/4,4′,4″-{N,-(2-naphthyl)-N-phenylamino}-triphenylamine(2T-NATA)(15nm)/FHQZn(xnm)/4,4′-bis(2,2′-diphenylvinyl)-1,1′-biphenyl(DPVBi)(20nm)/2,2′,2″-(1,3,5-phenylene)tris(1-phenyl-1H-benzimidazole-(TPBi):6%factris(2-phenylpyridine)iridium(Ir(ppy)3)(45nm)/LiF(0.5nm)/Al,FHQZn作空穴传输层和黄色发光层,DPVBi作空穴阻挡层,TPBi中掺杂Ir(ppy)3作电子传输层;研究了发光层FHQZn的厚度对该器件的发光性能的影响。当FHQZn厚度x=25时,得到了效率和亮度最大的黄光器件,最大电流效率为1.31cd/A(at13V),最大亮度为5705cd/m2(at14V),此时色坐标为(0.4,0.5516)。     

基于FHQZn发光的色度稳定的有机白光器件

研究了一种新型发光材料(E)-2-(2-(9H-fluoren-2-yl)vinyl)quinolato-Zinc的发光性能,利用它的空穴传输和发光特性制备了有机白光器件,器件的结构为:ITO/2T-NATA(15nm)/FHQZn(38nm)/NPB(25nm)/BCP(10nm)/Alq(30nm)/LiF(0.5nm)/Al,其中,(E)-2-(2-(9H-fluoren-2-yl)vinyl)quinoato-Zinc(FHQZn)作为空穴传输层和黄橙色发射层,N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4,4′-diamine(NPBX)作为蓝光发射层。器件最大的电流效率为1.68cd/A(at7V),最大的亮度为4624cd/m2(at12V),此时色坐标为(0.28,0.25)。器件的色坐标由7V(66.83cd/m2)时的(0.27,0.29)到12V(4624cd/m2)时的(0.28,0.25)几乎不变,是一个基于新型材料的色度较稳定的有机白光器件。     

基于NPBX掺杂CzHQZn的黄色有机电致发光器件

利用一种既具有空穴传输特性又具有发光特性的新型荧光染料N-乙基咔唑-2-乙烯基-8-羟基喹啉锌[(E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl)quinolato-zinc,CzHQZn]掺杂在NPBX中作为空穴传输层,CzHQZn同时还作为发光的主体,制备了结构为ITO/2T-NATA(30nm)/NPBX:25%CzHQZn(xnm)/BCP(10nm)/Alq3(60-x)nm/LiF(0.5nm)/Al的有机发光器件(x为掺杂发光层的厚度),掺杂发光层的厚度按照15,20,25,30nm进行变化,相应改变Alq3的厚度,使得这两者的总厚度为60nm保持不变。当掺杂发光层的厚度是20nm,Alq3的厚度是40nm,其他层厚度保持不变时,器件在4V电压下实现了黄光发射,色坐标为(0.514 6,0.470 5),亮度是1.078cd/m2。在14V的电压下,器件最大发光亮度为449 0cd/m2,最大发光效率为0.98cd/A。     

基于TPAHQZn发光色度稳定的黄色OLED

采用一种既具有空穴传输特性又具有发光特性的新型荧光染料(E)-2-(4-(dipheny-lamino)styryl)quinolato-zinc (TPAHQZn)作为发光层,制备了结构为 ITO/ 4,4′,4″-{N,-(2-naphthyl)-N-phenylamino}-triphenylamine (2T-NATA)(15 nm)/ (E)-2-(4-(diphenylamino)styryl)quinolato-zinc (TPAHQZn)(x nm)/9,10-bis(2-naphthyl)anthracene(ADN)(31 nm)/ tris(8-quinolinolato) aluminum(Alq3)((65-x) nm)/LiF(0.6 nm)/Al的黄色有机电致发光器件.研究了不同厚度的发光层对器件性能的影响.TPAHQZn厚度为30 nm 的器件在14 V电压下实现了黄光发射,最大发光亮度为 2 479 cd/m2,最大电流效率为0.84 cd/A,色坐标由8 V(6.346 cd/m2)时的(0.502,0.449 5)到14 V(2 479 cd/m2 )时的(0.497 9,0.453)变化不大,器件的发光颜色稳定.     

利用Ir(ppy)_3敏化CzHQZn提高OLED的性能

用CzHQZn作为受主,利用磷光敏化的方法制备了有机电致黄光和白光器件。黄光器件采用Ir(ppy)3掺杂4,4-N,N′-=咔唑基联苯(CBP),敏化新的黄光材料CzHQZn作为发光层,当发光层厚度为18nm时器件性能最好,最大发光效率为3.26cd/A(at10V),最大发光亮度为17560cd/m2(at10V);白光器件采用多发光层结构,结合ADN的蓝光复合发光,同时加入了电子阻挡层(NPBX)和空穴阻挡层(BCP),获得的白光器件最大发光效率为2.94cd/A(at8V),最大亮度为11089cd/m2(at13V)。     

电压对有机蓝光器件发光光谱的影响

介绍了结构为ITO/40 nm 4,4′,4″-tris[N,-(3-methylphenyl)-N-phenylamino]tripheny- lamine(m-MTDATA)/5 nm N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biphenyl-4,4′- diamine(NPB)/x nm 4,4-bis(2,2-diphenyl vinyl)-1,1-biphenyl(DPVBi)/y nm 6,11,12,- tetraphenylnaphthacene(Rubrene)/40 nm tris(8-hydroxyquinoline)aluminum(Alq)/0.5 nm LiF/Al的器件,其发光光谱的半峰宽在电压由2 V变为12 V时,由140 nm变为70 nm,器件发光的峰值波长由456 nm变为444nm的规律。半峰宽变窄是由于随着电压的升高,被Ru- brene俘获的电子获得了足够的能量,越过Rubrene层,在DPVBi中与注入的空穴形成激子而复合发光的概率的逐步增加所造成的。峰值波长蓝移是由于激子的形成区域随着电压的增加逐渐由DPVBi层移向NPB层造成的。器件峰值波长的这种变化对器件的色度改善有着很大的影响。     

掺杂Rubrene双发光区有机黄光器件的制作

制作了在N,N′-diphenyl-N,N′-bis-1-naphthyl)-(1,1′-biphenyl)-4,4′-diamine(NPB)和aluminium-tris-8-hydroxy-quinoline(Alq3)中分别掺杂黄色荧光染料5,6,11,12,-tetraphe-nylnaphthacene(Rubrene)的双发光区有机黄光电致发光器件。器件的结构为ITO/NPB(30nm)/NPB∶Rubrene(20nm)/Alq3∶Rubrene(20nm)/Alq3(30nm)/LiF(0.8nm)/Al。NPB作为空穴传输层材料,Alq3作为电子传输材料,NPB和Alq3中掺杂Rubrene的浓度分别为0.9%和1.4%。实验结果表明,由于Rubrene具有较强的载流子俘获能力,而且在Alq3和NPB层中进行掺杂,相对于单掺杂层器件为Rubrene提供了更多的俘获空位,从而提高了器件的性能。     

锌金属配合物BFHQZn的白色有机电致发光器件

利用新型荧光染料2-溴-4-氟苯乙烯-8-羟基喹啉锌(BFHQZn,(E)-2-(2-bromo-4-fluorostyryl)quinolato-Zinc)的电致发光(EL)特性,制备了非掺杂型的有机电致白光器件(WOLED)。器件的结构为ITO/CuPc(10nm)/NPBX(25 nm)/BFHQZn(18 nm)/NPBX(xnm)/BCP(10 nm)/Alq3((47-x)nm)/LiF(0.5 nm)/Al,当x为12时,得到了色度最好和效率最大的WOLED,最大电流效率为1.11 cd/A(at 10 V),最大的亮度为817 cd/m2(at 15 V),当驱动电压从7 V(启亮)升高到15 V(最高亮度)时,器件色坐标由(0.32,038)改变为(0.30,0.28)。     

MoO3作空穴注入层的绿光有机电致发光器件制备及其性能研究

用真空热蒸镀的方法制备了绿光有机电致发光器件,并对其工艺流程进行了详细的描述。器件结构为ITO/MoO3(xnm)/N,N′-diphenyl-N,N′-bis(1-naphthyl)-(1,18-biphenyl)-4,4-diamine(NPB)(40nm)/tris(8-hydroxyquinoline)aluminum(Alq3)(60nm)/LiF(1nm)/Al(150nm),其中x=0,5nm。实验中,对ITO基片进行氧等离子体表面处理,能够有效减小ITO表面的接触角。通过对器件的光电性能测试,研究了MoO3作空穴注入层对有机电致发光器件性能的影响。实验结果表明,空穴注入层MoO3的最高占据分子轨道(HOMO)能级较好的与ITO功函数匹配,降低了空穴注入势垒,提高了器件的发光亮度和效率。当外加电压小于10V时,器件的电流密度随外加电压的增加而增加,但变化不明显;当外加电压大于10V时,器件的电流密度明显增强,发光色度几乎不随驱动电压的改变而改变,色坐标稳定在(0.36,0.55)附近。     

一种新型蓝色有机电致发光器件及其发光机理

利用5,6,11,12-tetraphenylnaphthacene(Rubrene)超薄层制备了一种蓝光有机电致发光器件(OLED),器件结构为ITO/N,N'-diphenyl-N,N'-bis(1-naphthyl)-(1,18-biphenyl)-4,4'-diamine(NPB)(50nm)/2,9-d...     

Technology innovation and process integrations for sub-100nm gate patterning

This paper presents a brief overview of the Applied Centura(R)DPS(R)system,configured with silicon etch DPS Ⅱ chamber, with emphasis on discussing tuning capability for CD uniformity control. It also presents the studies of etch process chemistry and film integration impact for an overall successful gate patterning development. Discussions will focus on resolutions to key issues, such as CD uniformity, line-edge roughness, and multilayer film etching integration.     

White organic light-emitting devices based on fac tris（2- phenylpyridine） iridium sensitized 5,6,11,12-tetraphenylnap -hthacene

We have fabricated the white organic light-emitting devices （WOLEDs） based on 4,4＇ -bis（2,2 -diphenyl vinyl）-1,1＇ - biphenyl （DPVBi） and phosphorescence sensitized 5,6,11,12,-tetraphenylnaphthacene （rubrene）. The device structure is ITO/2T-NATA （20 nm）/NPBX （20 nm）/CBP： x%Ir（ppy）3：0.5% rubrene （8 nm）/NPBX （5 nm）/DPVBi （30 nm）/Alq（30 nm）/LiF（0.5 nm）/A1. In the devices, DPVBi acts as a blue light-emitting layer, the rubrene is sensitized by a phosphorescent material, fac tris （2-phenylpyridine） iridium [Ir（ppy）3], acts as a yellow light-emitting layer, and N,N＇ -bis- （1-naphthyl）- N,N＇ -diphenyl -1, 1＇ -biphenyl-4,4＇ -diamine （NPBX） acts as a hole transporting and exciton blocker layer, respectively. When the concentration of Ir （PPY）3 is 6wt%, the maximum luminance is 24960 cd/m^2 at an applied voltage of 15 V, and the maximum luminous efficiency is 5.17 cd/A at an applied voltage of 8 V.     

Complete approach to automatic identification and subpixel center location for ellipse feature

To meet the need of automatic image features extraction with high precision in visual inspection, a complete approach to automatic identification and sub-pixel center location for similar-ellipse feature is proposed. In the method, the feature area is identified automatically based on the edge attribute, and the sub-pixel center location is accomplished with the leastsquare algorithm. It shows that the method is valid, practical, and has high precision by experiment. Meanwhile this method can meet the need of instrumentation of visual inspection because of easy realization and without man-machine interaction.     

小角度扩展相关性近似算法分析

本论文提出一种在多天线MIMO信道相关性建模中小角度扩展近似理论算法,并应用于分析MIMO系统性能。分析中分别对三种不同角能量分布情况下的空间相关性研发快速近似计算法,并同时提出双模(Bi-Modal)角能量分布情况下的近似运算。通过分析这些新方法的近似效率,可以得到计算简单、复杂度低、而且符合实际的MIMO相关信道矩阵,对系统级的快速高效计算法的研究和系统级的评估以及误差分析具有重要的意义。     

A Versatile Mixed-Signal Pin Approach for Cost-Effective Test of Automotive ICs

Integrated circuits (ICs) intended for increasingly sophisticated automotive applications bring unique test demands. Advanced ICs for applications such as highly integrated automatic braking system (ABS) and airbag controllers combine high voltage digital channels, significant VI demands and precise timing capability. Along with continued missioncritical reliability concerns, the trend toward higher voltage operation and increased device integration requires specialized test capabilities able to extend across the wide operating ranges found in automotive applications. Among these capabilities, automotive test requirements increasingly dictate a need for a cost-effective versatile mixed-signal pin electronics with very high data rates reaching up to 50MHz with a voltage swing of-2 V to +28 V.     

Optical vibration and deviation measurement of rotating machine parts

It is of interest to get appropriate information about the dynamic behaviour of rotating machinery parts in service. This paper presents an approach of optical vibration and deviation measurement of such parts. Essential of this method is an image derotator combined with a high speed camera or a laser doppler vibrometer （LDV）.     

INTEGRATION OF OPTICAL AND WIRELESS NETWORKS

正For a long time,optical and wireless systems/net-works are developed in separate communities witha few attempts for in-depth convergence.In fact,it prom-ises many advantages to combine the optical and wire-less technologies in the levels of systems and networks.Recently,both academia and industry have made manyefforts to enter a new phase of development to take op-tical and wireless systems as fully integrated networks.To provide high bandwidth and reliable service for bothfixed and mobile users,a well-designed network must     

社长序言（英文）

正Happy New Year!As we step into a new year,we take a look back at the key feature topics covered in China Communications over the past 12 months and set out our expecta-     

云计算专题（英文）

正Cloud computing is a novel computing paradigm that utilizes remote cloud resources to achieve a high-performance computation.Cloud provides infrastructure,platform and software as different on-demand services.China has made remarkable progress in cloudbased products and operating system technology.The government,enterprises and research institutions are all active in the development of cloud computing-related projects.Despite the progress,many important problems     

Call for Papers—Feature Topic,Vol.12,No.3,2015

正Smart Grid Communications The electric power industry is undergoing profound changes as the industry aims to capture the promise of a smart grid for a sustainable energy future.Enabled by the advanced sensing devices such as Phasor Measurement Units(PMUs),increasingly powerful