This document discusses the simulation of solar cell devices using Silvaco TCAD tools. It begins with an introduction to Silvaco TCAD tools and the modules available for solar cell simulation, including S-Pisces, Blaze, Luminous, and others. It then discusses simulating key solar cell characteristics such as spectral response, open circuit voltage, short circuit current, and I-V curves. Examples of simulations showing photo generation rates and the effects of surface texture are also presented.