有源驱动有机半导体发光三极管

研制了有源驱动的有机发光显示器件—具有有机静电感应三极管结构的有机电致发光三极管，并测试评价了其基本电气、光学特性．研制的有机电致发光三极管，采用酞氰铜和喹啉铝蒸发膜作为作用层，由测试结果可知，较低的栅极偏压可控制由源极注入到喹啉铝发光层的载流子，通过合理设计、控制制作梳状铝栅极结构，获得了高速、高电流密度等良好的三极管工作特性。     

三氧化钨薄膜的制备及其亲水/疏水性能转变研究

在预先用聚多巴胺薄膜处理的玻璃基底上,采用溶胶-凝胶法制备出三氧化钨(WO3)薄膜,用X射线衍射(XRD)和扫描电子显微镜(SEM)表征手段来分析其物相组成和形貌特征.对WO3薄膜在UV光照射下和黑暗的环境中发生亲水/疏水转换的现象进行研究,最后得出WO3薄膜表面润湿性转化的机理.     

Ce掺杂的WO_3薄膜的电学性质

在磁控溅射仪上用直流Ce和W共同磁控溅射方法,在载玻片上沉积Ce掺杂的WO_3,薄膜,以研究溅射功率对该薄膜电学性质的影响.薄膜在550℃的空气中退火1 h,用X射线衍射和扫描电子显微镜分析薄膜的显微结构.结果表明:Ce掺杂后薄膜呈岛状结构生长,有利于薄膜沿b轴方向生长;当Ce和W的溅射功率分别为40 W和160 W时,薄膜的非线性系数最大,达到7.92.     

酞菁铜薄膜制备及其光学性能

采用真空蒸发的方法在ITO玻璃上制备了CuPc薄膜,并用分光光度计（U-3310）测试了四种不同厚度的CuPc薄膜的透射/吸收/反射率随波长变化情况,重点分析了其中的吸收规律.结果显示波段在340~370 nm和570~720 nm光吸收率基本上在90%左右,在480 nm吸收率最低,大部分光都已透射.同时用扫描电子显微镜对薄膜进行了成分分析,对照能谱图可以看出样品中含有碳、氧、铜等元素,与酞菁铜薄膜元素组成成分相符.     

Nc-Si Thin Film Deposited at Low Temperature and Nc-Si Heterojunction Solar Cel

IntroductionMuchworkhasbeendonetostudythestruc-tureandpropertiesofthehydrogenatednano-crystallinesilicon(nc-Si∶H)thinfilmsinthepastfewyears[1～3].Ithasbeenreportedthatthesefilmshavemanygoodopticalandelectricalproper-ties[4～6].Severaldepositiontechniqueshavebeenestablishedtopreparenc-Si∶Hthinfilms,includ-ingplasmaenhancedchemicalvapordeposition(PECVD),hotwirechemicalvapordeposition(HWCVD)[7,8]andreactivemagnetronsputter-ing[9]withthesubstratetemperaturevaryingfrom150to250°C.Comparedwi…     

发光层厚度比对有机电致发光器件性能的影响

将发光层进行多次堆叠构造出有机电致发光器件。实验说明,在总厚度相同而各发光层厚度比不同的条件下,器件呈现不同的发光特性。器件的电致发光光谱存在明显的变化,器件颜色由蓝光到近白光变化显著,器件的亮度和效率也有不同程度的变化。     

质子交换膜燃料电池电极制备及评价

质子交换膜燃料电池采用固体聚合物膜为电角质简化了电池的水和电解质管理;薄的电解质膜使其可以获得非常高的比能量密度;高度可靠性和环境友好使其在用于航天、陆地和水下设备电源等方面具有广泛的应用前景。研究了质子交换膜燃料电池的电催化剂和电极制备并同国外的电极进行了比较。结果表明：自制电极电池的性能接近国外同类产品。     

有机衬底上射频磁控溅射制备ITO薄膜的研究

Introduction Indium tin oxide (ITO) film has been widely used as a transparent conductor due to its high transparency to visible light and its low electrical resistivity. ITO film can be prepared by many techniques, including thermal evaporation deposition, magnetron sputtering, electron beam evaporation, spray pyrolysis,chemical vapour deposition,dip-coating techniques,and later developed pulsed laser deposition method.     

Effect of LaNiO3 Interlayer on the Dielectric Properties of Ba0.5Sr0.5TiO3 Thin Film on Si Substrate

In this study, (100)-oriented growth of Ba0.5Sr0.5TiO3 (BST) /LaNiO3 (LNO) stacks was obtained on Pt(lll)/SiO2/Si substrates by r.f. magnetron sputtering. The orientation of the subsequently deposited Ba0.5Sr0.5TiO3 thin film was strongly affected by the LNO under layer, and the BST thin film deposited on the (100)LNO-coated Si substrate was also found to have a significant (100)-oriented texture. Effects of LNO interlayer on the dielectric properties of BST thin films were investigated. As a result, the tunability of BST thin film was greatly improved with the insertion of (100)-oriented LNO under layer with proper thickness.     

Sol-Gel提拉法制备ZAO薄膜及其光电性能

采用溶胶-凝胶（Sol-Gel）浸渍提拉法（基于组装的小型提拉装置）在普通玻璃片上制备出ZnO：Al（ZAO）薄膜,利用扫描电子显微镜、紫外-可见分光光度计、数字式四探针测试仪等检测手段分别对其进行了分析比较。结果表明：Al^3＋浓度为1．0％的ZAO薄膜表面最为致密均匀;随着退火温度的提高,薄膜的晶体平均粒径明显增大,电阻率逐渐减小;不同掺Al量的ZAO薄膜在可见光区的平均透光率均在70％以上,当Al^3＋浓度为1．5％时,550℃退火2h,电阻率最小,为5．9×10^-2Ω·cm。     

从WCEE看国内外韧性抗震梁桥研究进展

梳理和总结了第16、17届世界地震工程大会(WCEE)中关于韧性抗震梁桥相关的研究进展;分析了后张预应力摇摆自复位梁桥与其他新型韧性抗震梁桥体系的最新研究进展,总结了高性能材料在韧性梁桥中的应用研究,并介绍了国内外自复位梁桥的工程实践;介绍了自复位耗能装置和限位装置等韧性抗震梁桥结构中的可更换装置研究,讨论了附加可更换装置的梁桥结构抗震性能;总结了单体梁桥和桥梁网络的抗震韧性评估方法,探讨了韧性抗震梁桥结构的研究方向和发展趋势。研究结果表明:附加可更换耗能装置的后张预应力自复位梁桥是研究最为广泛的韧性抗震梁桥结构,且已建成了多座示范工程,该类结构在强震中的表现有待实际地震验证;需要结合高性能材料开发可更换装置新结构与新构造,在此基础上研究其与桥梁的合理连接技术及抗震设计方法;考虑性能退化、需求增加等多因素影响的既有梁桥结构抗震韧性评价方法和能力提升技术及其设计理论,是中国已建梁桥面临的突出问题。      

N掺杂的ZnO薄膜发光性质研究

以醋酸锌为前驱体、醋酸铵为掺杂源,采用溶胶—凝胶法制备出N掺杂的ZnO薄膜,研究了其表面形貌、晶体结构和变温下的光致发光光谱,探讨了N作为受主掺杂的热力学性质。结果表明,掺杂后的薄膜是六角纤锌矿结构,光谱中表现出和N相关的受主束缚激子、自由激子—受主和施主—受主对发光现象。通过理论计算得到,N作为受主的电离能大小为0.255~0.310 eV,表明N是一种有效的浅受主,其能级上的电子在较小的能量下就能够电离。     

Understanding Spray Coating Process: Visual Observation of Impingement of Multiple Droplets on a Substrate

Spray coating is a facile deposition process with numerous existing and emerging applications. However, spray coating is a stochastic process comprising impingement of many droplets which upon impact on a heated substrate may dry or solidify individually or coalesce first to form a thin liquid film and then dry to yield a thin solid film. There is very limited knowledge on how this process occurs; therefore in this work, high speed imaging is used to visualize the spray coating process. Two model solutions including food-dye with properties like those of water, and poly (3, 4-ethylenedioxythiophene): poly (styrenesulfonate) (PEDOT:PSS), a polymeric solution, are sprayed onto permeable glossy paper and regular impermeable glass substrates. Substrates are kept at room temperature and 80 °C elevated temperature. In some cases, a vertical ultrasonic vibration is imposed on the substrate to study its effect on the coating process. It is observed that the spray coating process is highly random and stochastic. A higher substrate temperature results in a better coating process in that a more uniform and defect-free coating forms. Imposed vibration in the case of glossy paper substrates results in better droplet spreading and more uniform coating. The results also show that under the conditions of these experiments, impinged droplets dry individually or as islands of multiple coalesced droplets to form a coating. In other words, at used spray flow rate and spray droplet size, a continuous thin liquid film does not form prior to drying even at room temperature. Further systematic studies and high magnification lenses are required to visualize and understand the details of the process.     

Effect of LaNiO3 interlayer on the dielectric properties of Ba0.5Sr0.5TiO3 thin film on Si substrate

In this study, (100)-oriented growth of Ba_0.5Sr_0.5TiO₃ (BST) /LaNiO₃ (LNO) stacks was obtained on Pt(111)/SiO₂/Si substrates by r.f. magnetron sputtering. The orientation of the subsequently deposited Ba_0.5Sr_0.5TiO₃ thin film was strongly affected by the LNO under layer, and the BST thin film deposited on the (100)LNO-coated Si substrate was also found to have a significant (100)-oriented texture. Effects of LNO interlayer on the dielectric properties of BST thin films were investigated. As a result, the tunability of BST thin film was greatly improved with the insertion of (100)-oriented LNO under layer with proper thickness. Foundation item: the National Key Lab of Nano/Micro Fabrication Technology (No. 9140C 790310060C79) and the National Natural Science Foundation of China (No. 60701012)     

多次纺丝与退火对 ITO 薄膜表面均匀性的影响

通过多次纺丝与退火工艺在普通玻璃载玻片上制备ITO透明导电薄膜，研究了退火工艺对薄膜表面形貌的影响。结果表明：退火不仅提高了ITO颗粒的洁净程度，同时减小了其在薄膜表面的粒径分布。多次纺丝与退火可以提高ITO颗粒的覆盖密度，得到致密性比较好、表面缺陷比较少、表面粗糙度比较小、均匀平整的透明导电薄膜。     

有机静电感应三极管（OSIT）静态工作特性的解析

在分析SIT器件电流一电压特性的理论基础上，对由有机半导体材料酞氰铜制作的有机SIT进行了静态特性的测试，通过对测试曲线进行数据拟合与解析，得出一系列OSIT在不同偏压条件下，电流-电压的表达式．数据解析结果表明，有机SIT器件的静态特性同无机SIT器件静态特性的理论分析基本相符。     

Design and implementation of a data-driven dynamical reconfigurable cell array

The nature of dataflow computation demands the heavy flow of tokens amongst computation nodes. Traditional reduced instruction-set computer (RISC) processors are not suitable for such style computation. Devices that use long wire buses are not suitable for dataflow either. Reconfigurable computing devices (RCDs) consist of data transfer wires and computing resources. With minor modifications, reconfigurable cells can be adopted to perform dataflow computation. A reconfigurable cell array (RCA) is presented in this paper and it is suitable for dataflow computation. This cell array has a dynamic reconfigurable storage model. The distinctive features of the architecture include dataflow reconfigurable cells and reconfigurable storage. Dataflow applications can be mapped easily and effectively onto the cells. Reconfigurable storage is mainly used to manage data access and transmission. Furthermore, computation and data management are separated. Meanwhile, dynamical reconfiguration is accomplished, when some clusters of cells work in configuration mode and other clusters work in computation mode. The dataflow graphs of some algorithms are mapped onto our architecture, and the performance results are compared with those of CPU and GPU.     

液晶电光效应的应用研究

应用液晶电光效应设计的两种特殊的光学器件--液晶光快门和液晶透镜.阐述了它们的设计原理及结构特点.液晶光学器件的优点是:用低电压和低功耗就能大幅度的改变其光学性质;无须整形加工;廉价且制作简易.因此应用前景广泛.     

溶胶－凝胶法制备氧化铝薄膜

以异丙醇铝为原料，研究了溶胶的浓度、粘度及加入电解质的种类，电解质的浓度和焙烧温度等条件对成膜的影响．     

退火温度对化学水浴沉积CdS薄膜性能的影响

采用化学水浴沉积法(CBD)制备了CdS薄膜,用扫描电镜(SEM)、能谱(EDS)、X射线衍射仪(XRD)、分光光度计进行检测.研究了退火温度对CdS薄膜表面形貌、成分、晶体结构和光学性能的影响.研究表明,CdS薄膜为微晶或是非晶态,S/Cd原子比在0.8左右,可见光透过率较高;随着退火温度的升高,薄膜结晶明显,但是透光率下降,禁带宽度范围在2.42～2.59eV之间.