Kaden introduces a series of tutorials for SRIM (The Stopping and Range of Ions in Matter; http://www.srim.org/SRIM/SRIMPICS/STOPPLOTS.htm). He has developed a MATLAB code to interpret the results in detail. Specifically, Kaden will discuss the impact of Ar ion beam (a typical sample prep technique) to semiconductor materials (e.g., GaAs, CdTe thin film, hybrid perovskite solar cells). This work is supported by DOE and NSF.