基于柔性透明疊層電極光學(xué)系統(tǒng)的三維建模與仿真
發(fā)布時(shí)間：2018-08-28 08:45
【摘要】：隨著光電子行業(yè)的不斷發(fā)展,針對光電子器件與疊層薄膜的理論研究與實(shí)驗(yàn)內(nèi)容研究越發(fā)的深入。其中,計(jì)算機(jī)仿真方法作為一種強(qiáng)有力的研究途徑,被越來越多的應(yīng)用到相應(yīng)的研究領(lǐng)域中。然而,隨著材料研究的深入,不斷有新的材料和結(jié)構(gòu)被應(yīng)用到光電子器件之中。因此,由于適用環(huán)境和具體參量的改變,其相對應(yīng)的計(jì)算機(jī)仿真方法也需要進(jìn)行相應(yīng)的優(yōu)化。同時(shí),隨著傳統(tǒng)的仿真方法間的界限變得模糊,能夠適應(yīng)多種情況,具備多種仿真方法特征的方法有著巨大的應(yīng)用前景。柔性透明疊層電極作為一種性能優(yōu)異、結(jié)構(gòu)延展性強(qiáng)、不具備明顯缺點(diǎn)的透明電極種類,有著廣闊的應(yīng)用前景與研究價(jià)值。然而,對于柔性透明疊層電極的仿真工作卻遭遇了許多的阻礙,其極薄的厚度與非平行的三維結(jié)構(gòu)使得對于其的仿真結(jié)果誤差很大。傳統(tǒng)的疊層薄膜材料一般采用時(shí)域差分方法進(jìn)行仿真,然而在面對具有三維結(jié)構(gòu)的光學(xué)體系時(shí),使用時(shí)域差分方法需要進(jìn)行復(fù)雜的建模,且需要適用大量的內(nèi)存和時(shí)間進(jìn)行計(jì)算;蒙特卡羅光線追蹤方法作為一種高效、輕量級的仿真方法,常被用于計(jì)算光學(xué)透鏡組的聚焦點(diǎn),但一般的光線追蹤方法模型不適合與計(jì)算包括薄膜與吸收介質(zhì)的光學(xué)特性,且對于強(qiáng)度的計(jì)算需要額外的實(shí)現(xiàn)。因此利用兩種仿真方法特性,結(jié)合構(gòu)造的基于光線追蹤方法的新仿真方法就成了可行的選擇。通過基于Matlab語言的面向?qū)ο蠓椒?我們開發(fā)了用于實(shí)現(xiàn)光線追蹤方法的光線組類與界面類,并通過兩者的交互實(shí)現(xiàn)了光線追蹤方法。在實(shí)現(xiàn)了一般光線追蹤方法的基礎(chǔ)上,我們針對其在柔性透明疊層電極的仿真中所出現(xiàn)的各種需求,進(jìn)行了對應(yīng)的優(yōu)化。通過構(gòu)造并實(shí)現(xiàn)了光線組二叉樹,我們利用其實(shí)現(xiàn)了從單向傳播光線追蹤到多次反射折射光線追蹤的優(yōu)化,該優(yōu)化方法提高了一般光線追蹤方法的仿真結(jié)果的準(zhǔn)確性。當(dāng)吸收介質(zhì)被引入到光學(xué)系統(tǒng)中時(shí),我們根據(jù)其特性,在現(xiàn)有的方法基礎(chǔ)上增添了界面間的吸收模型的實(shí)現(xiàn),使得光線的強(qiáng)度能夠隨著吸收介質(zhì)的厚度變化而合理的變化;同時(shí),考慮到吸收介質(zhì)對光學(xué)常數(shù)的影響,我們改進(jìn)了界面上的光學(xué)交互方法,利用包含兩個(gè)參量的復(fù)折射率代替了一般的實(shí)數(shù)折射率,使得其在界面上的交互計(jì)算更加真實(shí),從而與真實(shí)世界的物理現(xiàn)象保持結(jié)果的一致性。以上的改進(jìn)結(jié)果在與實(shí)驗(yàn)結(jié)果的比較中均體現(xiàn)了其效果。在以上改進(jìn)的基礎(chǔ)上,我們利用光線追蹤易于三維建模的特性,建立了柔性透明導(dǎo)電電極的三維結(jié)構(gòu),并進(jìn)行了仿真。通過與商業(yè)軟件的對比,表明了我們構(gòu)建的仿真方法針對柔性透明導(dǎo)電電極的仿真的良好效果。
[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.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：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.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN103;TP391.9
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