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申会曾春平马琨吴加权吴光敏 《高压物理学报》2016,(1):71-77
以P3HT(Poly(3-Hexylthiophene))为电子给体,PCBM([6,6]-Phenyl C61Butyric Acid Methyl Ester)为电子受体,在活性层P3HT:PCBM的退火过程中,利用磁场对活性层有机分子的排列取向作用,制备了有机体异质结太阳能电池。研究结果表明:当磁场强度为0.9MA/m时,器件的短路电流密度从7.414A/cm2提高到8.332A/cm2,填充因子也相应地增加,但开路电压却有所降低,最高的光电转换效率为2.562%。由光致发光光谱和原子力显微图像可知,磁场对活性层的结晶度、内部分子排列和表面形貌都有明显的影响。 相似文献
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Power Density Distribution Simulation and Relevant Heat Effect Calculation of a High-power CO_2 Laser with Low Order Modes 总被引:3,自引:0,他引:3
1 Introduction Intheindustrialapplicationresearchoflaserbeamheatprocessingandtreatment,duetotheshortinteractiontimeoflaserwiththematerial,theheat affectedareaislimitedintheareanearthe positionirradiatedbythelaserbeam .Supposedthattheworkpieceisasemi inf… 相似文献
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After propagating through the overlapping-image integral mirror, the interference fringe is a major factor that affects the uniformity of the image plane. In this paper, a He-Ne laser is used as light source, and the complex amplitude of the incident laser beam is modulated by an alternating electric field controlled vibrating mirror that is placed before the optical system. The experimental results show that after propagating through the overlapping-image integral mirror, not only the contrast of the interference fringes on the image plane is depressed, but also the uniformity of the intensity distribution of the transformed light beam is improved. Finally, based on the experimental results, two optical systems that can be applied to high power laser uniformity transformation are presented. 相似文献
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The vertical excitation axial-flux kilowatt CO2 laser is an equipment widely used in the high-power laser heat treatment industrial applications. The experimental measurements indicate that the power density distribution of laser beam is generally of ring distribution with a sunken at the center, therefore the laser beam cannot be simply regarded as base mode Gaussian beam. In this paper, such laser beam is regarded as the non-interference superposition of TEM00 and TEM01 mode beams, the method to determine the simulation parameters is discussed, and the relevant heat effect calculation equation is deduced. 相似文献
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Based on the calculation formulas of heat treatment temperature field for an arbitrary incident laser intensity distribution, the transformation intensity distribution of CO2 laser beam passing an integrating mirror is studied theoretically and experimentally. The derived formulas are applied in laser heat treatment research which is transformed by optical system, and the theoretical calculation results are compared with experimental results. It is shown that the formulas can be used to calculate the laser heat treatment temperature field accurately, and the calculation speed is obviously faster than the numerical calculation methods with the same precision. The calculation software can be used to select proper experiment parameters. 相似文献
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