Structure and optoelectrical properties of transparent conductive MGZO films deposited by magnetron sputtering

The transparent conductive Mg-Ga co-doped ZnO (MGZO) films were prepared by radio-frequency (RF) magnetron sputtering. The influence of substrate temperature on the structural and optoelectrical properties of the films is studied. The results show that all the films possess a preferential orientation along the (002) plane. With the increase of substrate temperature, the structure and optoelectrical properties of the films can be changed. When substrate temperature is 300 °C, the deposited film exhibits the best crystalline quality and optoelectrical properties, with the minimum micro strain of 1.09´10-3, the highest average visible transmittance of 82.42%, the lowest resistivity of 1.62×10-3 W?cm and the highest figure of merit of 3.18×103 W-1?cm-1. The optical bandgaps of the films are observed to be in the range of 3.342—3.545 eV. The refractive index dispersion curves obey the Sellmeier’s dispersion model. #$TABThis work has been supported by the National Natural Science Foundation of China (No.11504436), and the Fundamental Research Funds for the Central Universities (Nos.CZP17002 and CZW14019).#$TABE-mail:zyzhongzy@163.com      

激光外差干涉检偏器旋转误差对非线性误差的影响

为了减小激光外差干涉纳米测量的非线性误差,必须明确检偏器旋转误差对非线性误差的影响机理与消除方法。通过分析激光外差干涉检偏器旋转误差对非线性误差的影响,推导出检偏器旋转误差对非线性误差一次谐波和二次谐波的影响模型。仿真结果表明,当存在激光束椭圆偏振时,检偏器旋转误差对非线性误差的影响很小;当存在偏振分光镜旋转误差时,检偏器旋转误差引起的非线性误差不增加二次谐波分量,但增大了非线性误差一次谐波分量,严重影响非线性误差的大小,当偏振分光镜旋转误差为3°时,检偏器旋转误差从0°增加到5°,非线性误差从0.14 nm增大到0.97 nm。     

影响聚合物电致发光器件旋涂膜厚因素的研究

采用正交试验设计,应用方差分析方法,研究了旋涂工艺中聚合物溶液的浓度、匀胶机的旋涂速度和加速度以及旋涂时间对所制备的薄膜厚度的影响.试验和分析结果表明:溶液浓度和旋涂速度对薄膜厚度具有显著性的影响,而旋涂加速度和旋涂时间对它的影响则不显著.使用旋涂工艺制备聚合物薄膜时,合理选择溶液浓度和旋涂速度,对于优化器件的性能具有非常重要的作用.     

某型倾斜发射舰空导弹射击禁危区研究

为充分发挥舰空导弹武器的威力,保证编队内我方兵力的安全,研究了舰空导弹射击的禁危区,介绍了舰空导弹射击禁危区的定义及影响因素,分析了禁危区的划分原理．以某型遥控制导舰空导弹为例,给出了射击禁危区的计算模型,得出禁危区远界只与导弹可能飞行的最大距离有关,禁危区扇面角的大小与所射击目标的种类和目标的航路捷径有关,为该型舰空导弹的战斗使用提供了参考．     

抗击反辐射导弹武器的指挥策略研究

结合水面舰艇作战特点，从雷达诱偏和舰空导弹硬抗击两个方面入手，对抗击反辐射导弹武器时的编队配置、引诱条件、引诱时机及指挥策略进行分析探讨，提出以积极的防御手段综合抗击来袭的雷达制导反辐射导弹．     

提高舰空导弹编队反导能力方法研究

分析了反舰导弹的作战特点、舰空导弹武器的战技性能和传统防空反导队形,从提高编队反导能力角度论证了水面舰艇编队应采取的最佳反导队形,针对不同方向的来袭目标,计算舰艇间舰空导弹武器的协同反导区域和协同反导时间,提出了提高舰空导弹编队反导能力的战术技术措施。     

Effects of discharge power on the structural and optical properties of TGZO thin films prepared by RF magnetron sputtering technique

The transparent semiconductors of Ti and Ga-incorporated ZnO (TGZO) thin films were prepared by radio frequency (RF) magnetron sputtering onto glass substrates. The effects of discharge power on the physical properties of thin films are studied. Experimental results show that all nanocrystalline TGZO thin films possess preferential orientation along the (002) plane. The discharge power significantly affects the crystal structure and optical properties of thin films. When the discharge power is 200 W, the TGZO thin film has the optimal crystalline quality and optical properties, with the narrowest full width at half-maximum (FWHM) of 1.76´10-3 rad, the largest average grain size of 82.4 nm and the highest average transmittance of 84.3% in the visible range. The optical gaps of thin films are estimated by the Tauc’s relation and observed to increase firstly and then decrease with the increase of the discharge power. In addition, the optical parameters, including refractive index, extinction coefficient, dielectric function and dissipation factor of the thin films, are determined by optical characterization methods. The dispersion behavior of the refractive index is also analyzed using the Sellmeier’s dispersion model.     

应用联合代数重建技术重建热气流三维温度场

本文我们将联合代数重建技术应用于光学层析重建透明物体的折射率分布．建立了一简易的能获得多方位干涉条纹数据的全息干涉系统．利用双曝光全息干涉技术，对长方形开口上方的热气流场进行了实际测量，重建出了气流场中一个截面内的温度分布．重建温度值与热电偶实测值一致。     

双层异质结器件载流子复合位置的研究

载流子的复合是有机电致发光过程的一个重要环节,它直接影响着器件的效率,稳定性,寿命等性能。以双层器件ITO／N,N＇-Diphenyl-N,N＇-bis（1-naphthyl）-（1,1＇-biphenyl）-4,4＇-diamine（NPB）／tri-（8-hydroxy-quinoline）-aluminum（Alq3）／Mg：Ag为基础,以红光掺杂剂4-（dicyanomethylene）-2-t-butyl-6-（1,1,7,7-tetramethyljulolidyl-9-enyl）-4H-pyran（DCJTB）为探针,通过改变在Alq3层中掺杂层的厚度,研究了双层异质结器件中载流子的复合位置。结果表明,对于双层器件NPB／Alq3,载流子的复合及激子的辐射衰减位于界面处的Alq3层0～10nm范围内。     

基于MQ系列气体传感器的一种单片机数据处理算法

MQ系列气体传感器是工程上测试气体浓度的一种常用传感器.由于该系列传感器采用金属氧化物半导体作为敏感材料,因此需进行开方或对数运算才能最终得到被测气体浓度,这对单片机来说并不容易.为此从工程应用角度出发,推导了一种数据处理算法,并经工程实际应用验证,以期为相关人员提供参考.