The Three-dimensional Model And Simulation Based On Optical System Within Flexible Composite Transparent Electrodes

Researches toward electronics and laminated thin films are of greater importance with the continuous development of optoelectronics,urging the application of computer simulation as strong and efficient research approach.However,with the further investigation of the inner mechanism of materials as well as applications of new structure and materials,the simulation environment and the parameters within have been changed.Therefore,the optimization of simulation approaches is of great necessity.And the simulation with characteristics of multiple approaches shows promising further facing new challenges.Flexible transparent electrodes with composite structure show good performances by addressing the limits shown in primary materials.However,the simulation of laminated transparent electrodes faces obstacles due to its extremely thin thickness of each part of the structure and the complex surface morphology at different contact,introducing error and low efficiency.Traditionally,way to address the huge error is to find the exact solution of Maxwell's electromagnetic equation set in finite-element-system,known as FiniteDifference Time-Domain solution.Although the exact solutions give a simulating result with high accuracy,when introducing the complex three-dimension structure model,modeling in the solution becomes hard work.Moreover,the simulation occupies to much storage and time.Monte Carle ray tracing simulation,as light-weight and highly efficient method,is mainly focus on geometry-optical simulations like lens-sets.However,the optical model of ray tracing method shows poor fitness when computing in thin-film structure while missing solutions of light intensity.Therefore,a simulation method with characteristics from both solutions and focus on structure modeling is applicable built based on ray tracing method.Here,we have developed ray-group class and interface class through object oriented method within Matlab environment.The ray tracing simulation is realized with both two classes.As further optimizations,we built certain realization toward different optical phenomena.By constructing ray-group binary tree,evolution is realized form single-path ray tracing to multiple-path ray tracing.When considering the influence of the absorption through the medium,we rebuilt the reflecting and transmitting methods by using complex refractive index.The three-dimensional simulation of laminated flexible transparent electrode was analyzed with above optimizations.The result showed good coherence with experimental results.