In our project, we needed to create a transmitter LED and a receiver LED to demonstrate the photoelectric effect. To make our transmitter circuit, we followed the schematics as shown below. TIA stands for Transimpedance Amplifier and PD stands for Photo-Diode. So, what we're doing is putting photodiodes and LEDs against each other at a close enough distance so that the photons emitted from the LEDs will jump to the photodiodes kicking electrons and creating voltage. To view and extract our data, we used a digital bench multimeter and ported the values over to Google Sheets as a .csv file.
Here, we can see one of our group members, Sean, testing out the circuit to see its functionality.
by Tin Htoo, Sean Ruiz, Lynn Aung, Lynn Thant