Characterization Method of Photodiodes for Sensing Applications

The paper describes a platform for quick characterization of photodiodes exploring low reverse bias performance for various sensing applications. We demonstrated the method on a widely used photodiode, BPW34. An Arduino-based automated system is utilized to sweep biasing voltages and record photocurrent responses using a sense resistor. The BPW34 photodiode shows a higher response for red LASER light, with a photocurrent of around 260 µA. Various light sources are also tested and the results are reported. These results are analyzed and interpreted with context to the existing literature.