measure light intensity using photodiode equation

#Measure light intensity using photodiode equation how to

It also includes an adapter cable for connecting a potentiostat.įigure 1 – Gamry’s Optical Bench with LED and photodiode. The active area of the photodiode has a diameter of 0.9 cm, which gives a sample area of 0.636 cm 2. This parameter is needed to calculate the efficiency of your cell. It allows measuring and calculating the optical power of the light source. The “serf” potentiostat is used for measuring. The “master” potentiostat controls the LED. In order to perform experiments with dye solar cells, two synchronized potentiostats of the same family are needed. The assembly allows simple and reproducible adjustment of distance and height between solar cell/photodiode and light source. Dye solar cells can be mounted on the cage system using a special holder. Photodiode and light source can be mounted on optical posts.

It consists of a base which supports a rail system. Gamry’s Optical Bench allows performing various experiments with dye solar cells (DSCs) including cyclic voltammetry, potentiostatic EIS, and light pulse experiments as well as IMPS (intensity modulated photocurrent spectroscopy) and IMVS (intensity modulated photovoltage spectroscopy).įor more information on experiments with DSCs, see Gamry’s application notes at Dye Solar Cells: Part 1 – Basic principles and measurementsĭye Solar Cells – Part 2: Impedance measurementsĭye Solar Cells – Part 3: IMPS and IMVS measurementsįigure 1 shows the setup of Gamry’s Optical Bench.

#Measure light intensity using photodiode equation how to

This technical note explains how to measure and calculate the optical power of your light source. In order to calculate the efficiency of a solar cell, the optical power of the incident light has to be known. The generated power depends strongly on the intensity of the light. When performing experiments with dye solar cells, light is focused on a cell and its current or voltage response is measured. Measuring the Optical Power of your LED Purpose of This Note