基于柔性透明叠层电极光学系统的三维建模与仿真
发布时间：2018-08-28 08:45
【摘要】：随着光电子行业的不断发展,针对光电子器件与叠层薄膜的理论研究与实验内容研究越发的深入。其中,计算机仿真方法作为一种强有力的研究途径,被越来越多的应用到相应的研究领域中。然而,随着材料研究的深入,不断有新的材料和结构被应用到光电子器件之中。因此,由于适用环境和具体参量的改变,其相对应的计算机仿真方法也需要进行相应的优化。同时,随着传统的仿真方法间的界限变得模糊,能够适应多种情况,具备多种仿真方法特征的方法有着巨大的应用前景。柔性透明叠层电极作为一种性能优异、结构延展性强、不具备明显缺点的透明电极种类,有着广阔的应用前景与研究价值。然而,对于柔性透明叠层电极的仿真工作却遭遇了许多的阻碍,其极薄的厚度与非平行的三维结构使得对于其的仿真结果误差很大。传统的叠层薄膜材料一般采用时域差分方法进行仿真,然而在面对具有三维结构的光学体系时,使用时域差分方法需要进行复杂的建模,且需要适用大量的内存和时间进行计算;蒙特卡罗光线追踪方法作为一种高效、轻量级的仿真方法,常被用于计算光学透镜组的聚焦点,但一般的光线追踪方法模型不适合与计算包括薄膜与吸收介质的光学特性,且对于强度的计算需要额外的实现。因此利用两种仿真方法特性,结合构造的基于光线追踪方法的新仿真方法就成了可行的选择。通过基于Matlab语言的面向对象方法,我们开发了用于实现光线追踪方法的光线组类与界面类,并通过两者的交互实现了光线追踪方法。在实现了一般光线追踪方法的基础上,我们针对其在柔性透明叠层电极的仿真中所出现的各种需求,进行了对应的优化。通过构造并实现了光线组二叉树,我们利用其实现了从单向传播光线追踪到多次反射折射光线追踪的优化,该优化方法提高了一般光线追踪方法的仿真结果的准确性。当吸收介质被引入到光学系统中时,我们根据其特性,在现有的方法基础上增添了界面间的吸收模型的实现,使得光线的强度能够随着吸收介质的厚度变化而合理的变化;同时,考虑到吸收介质对光学常数的影响,我们改进了界面上的光学交互方法,利用包含两个参量的复折射率代替了一般的实数折射率,使得其在界面上的交互计算更加真实,从而与真实世界的物理现象保持结果的一致性。以上的改进结果在与实验结果的比较中均体现了其效果。在以上改进的基础上,我们利用光线追踪易于三维建模的特性,建立了柔性透明导电电极的三维结构,并进行了仿真。通过与商业软件的对比,表明了我们构建的仿真方法针对柔性透明导电电极的仿真的良好效果。
[Abstract]:With the development of optoelectronics industry, the theoretical and experimental research on optoelectronic devices and laminated films is becoming more and more in-depth. As a powerful research approach, computer simulation has been applied to more and more research fields. However, with the development of material research, new materials and structures have been applied to optoelectronic devices. Therefore, due to the change of applicable environment and specific parameters, the corresponding computer simulation methods also need to be optimized. At the same time, with the blurring of the boundary between the traditional simulation methods, which can adapt to a variety of situations, the methods with the characteristics of various simulation methods have a great application prospect. Flexible transparent laminated electrode is a kind of transparent electrode with excellent performance, strong structural ductility and no obvious shortcomings. It has broad application prospect and research value. However, the simulation of flexible transparent laminated electrodes has encountered a lot of obstacles. The extremely thin thickness and the non-parallel three-dimensional structure make the simulation results very big error. The traditional laminated thin film materials are usually simulated by time-domain difference method. However, in the face of the optical system with three-dimensional structure, the use of time-domain difference method requires complex modeling. Monte Carlo ray tracing method, as an efficient and lightweight simulation method, is often used to calculate the focal point of optical lens group. However, the general ray tracing model is not suitable for the calculation of optical properties of thin films and absorption media, and the calculation of intensity needs additional realization. Therefore, using the characteristics of two simulation methods and combining the new simulation method based on ray tracing method is a feasible choice. Through the object-oriented method based on Matlab language, we develop the ray-group class and interface class to realize the ray-tracing method, and realize the ray-tracing method through the interaction of the two classes. Based on the realization of the general ray tracing method, the corresponding optimization is carried out to meet the various requirements in the simulation of flexible transparent laminated electrodes. By constructing and realizing the binary tree of ray group, we use it to realize the optimization of ray tracing from one-way propagation to multiple reflection refraction. This optimization method improves the accuracy of the simulation results of the general ray tracing method. When the absorbing medium is introduced into the optical system, according to its characteristics, we add the realization of the absorption model between interfaces on the basis of the existing methods, so that the intensity of light can change reasonably with the thickness of the absorbing medium. At the same time, considering the influence of absorbing medium on the optical constant, we improve the optical interaction method on the interface, and replace the general real refractive index with the complex refractive index containing two parameters, so that the interaction calculation on the interface is more real. Thus keeping the result consistent with physical phenomena in the real world. The above improved results reflect its effect in comparison with the experimental results. On the basis of the above improvements, the 3D structure of flexible transparent conductive electrode is established and simulated by making use of the characteristic that ray tracing is easy for 3D modeling. The comparison with commercial software shows that our simulation method is effective for the simulation of flexible transparent conductive electrode.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN103;TP391.9
[Abstract]:With the development of optoelectronics industry, the theoretical and experimental research on optoelectronic devices and laminated films is becoming more and more in-depth. As a powerful research approach, computer simulation has been applied to more and more research fields. However, with the development of material research, new materials and structures have been applied to optoelectronic devices. Therefore, due to the change of applicable environment and specific parameters, the corresponding computer simulation methods also need to be optimized. At the same time, with the blurring of the boundary between the traditional simulation methods, which can adapt to a variety of situations, the methods with the characteristics of various simulation methods have a great application prospect. Flexible transparent laminated electrode is a kind of transparent electrode with excellent performance, strong structural ductility and no obvious shortcomings. It has broad application prospect and research value. However, the simulation of flexible transparent laminated electrodes has encountered a lot of obstacles. The extremely thin thickness and the non-parallel three-dimensional structure make the simulation results very big error. The traditional laminated thin film materials are usually simulated by time-domain difference method. However, in the face of the optical system with three-dimensional structure, the use of time-domain difference method requires complex modeling. Monte Carlo ray tracing method, as an efficient and lightweight simulation method, is often used to calculate the focal point of optical lens group. However, the general ray tracing model is not suitable for the calculation of optical properties of thin films and absorption media, and the calculation of intensity needs additional realization. Therefore, using the characteristics of two simulation methods and combining the new simulation method based on ray tracing method is a feasible choice. Through the object-oriented method based on Matlab language, we develop the ray-group class and interface class to realize the ray-tracing method, and realize the ray-tracing method through the interaction of the two classes. Based on the realization of the general ray tracing method, the corresponding optimization is carried out to meet the various requirements in the simulation of flexible transparent laminated electrodes. By constructing and realizing the binary tree of ray group, we use it to realize the optimization of ray tracing from one-way propagation to multiple reflection refraction. This optimization method improves the accuracy of the simulation results of the general ray tracing method. When the absorbing medium is introduced into the optical system, according to its characteristics, we add the realization of the absorption model between interfaces on the basis of the existing methods, so that the intensity of light can change reasonably with the thickness of the absorbing medium. At the same time, considering the influence of absorbing medium on the optical constant, we improve the optical interaction method on the interface, and replace the general real refractive index with the complex refractive index containing two parameters, so that the interaction calculation on the interface is more real. Thus keeping the result consistent with physical phenomena in the real world. The above improved results reflect its effect in comparison with the experimental results. On the basis of the above improvements, the 3D structure of flexible transparent conductive electrode is established and simulated by making use of the characteristic that ray tracing is easy for 3D modeling. The comparison with commercial software shows that our simulation method is effective for the simulation of flexible transparent conductive electrode.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN103;TP391.9
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