Lesson 19 – Heating Absorption

Heating Absorption Simulation Introduction

Metallic and lossy materials in solar cells or other semiconductor devices in general absorb part of the light wave energy, converting it to heat. This lesson demonstrates the heating absorption simulation in OptiFDTD. The layout we will simulate is shown in Figure 1, the corresponding project file (Sample44_3D_Heating_Absorption_64bit.fdt) can be found under the Sample folder of your software…

Input Wave

The Input Wave signal is defined within the Input Plane. To insert the Input Plane and set the excitation wave, follow the steps below: Step Action 1 From the Draw menu, select Vertical Input Plane, or select Vertical Input Plane shortcut toolbar (The Vertical Input Plane is in the x-y plane for 3D.) 2 Click in…

Simulation Parameters

Step Action 1 From the Simulation menu, select Simulate 3D Using 64-bit Simulator. The 3D Simulation Parameters dialog box. 3D simulation parameters dialog box ( Figure 3) Figure 3: 3D Simulation parameters dialog box 2 Uncheck Auto in the mesh parameters region, type the following values for the mesh size: Mesh Delta X (mm): 0.025 Mesh…

Refractive Index

Step Action 1 Click on “3D_Ref_Idx-Re(y)” tab on the bottom of the layout frame or select “Refractive Index” in the View menu. View of the refractive index cross-cut slice appears. 2 In the Orientation region which is in the left-bottom area of the window, change the slice orientation and move the slice position to observe…

Observation Objects

For the 32-Bit FDTD simulation, observation objects will record the entire time domain response so that spectrum analysis can be performed in analyzer. For 64-Bit FDTD simulation, Observation Points will still record the time domain response in each single point, but Observation Area will perform the spectral analysis during the simulations and save the resulting DFT…

64-bit FDTD Simulation

Step Action 1 From the Simulation menu, select the “Simulate 3D using 64-Bit Simulator…” option. The 3D Simulation Parameters dialog box appears. 2 Click Run to start the simulation. The progress window appears, it displays the status of the simulations. 3 Visualization of intermediate simulation results. •     When the Simulation Process window appears, from menu, select…

Post-Simulation Data Analysis

Our Analyzer provides a number of tools allowing for evaluation of different simulation results. The Heating absorption can be evaluated only in the Observation Area. Step Action 1 Open results file by analyzer. 2 In the Tools menu, select Observation Area Analysis to open the dialog box. 3 Click on the Observation Area button to…