Enter the number of electrons collected and the number of incident photons into the calculator to determine the Quantum Efficiency.
- All Efficiency Calculators
- Photon Energy Calculator
- Diffraction Efficiency Calculator
- Spectral Efficiency Calculator
Quantum Efficiency Formula
The following formula is used to calculate the Quantum Efficiency.
Eq = EC / IP
- Where Eq is the Quantum Efficiency
- EC is the number of electrons collected
- IP is the number of incident photons
How to Calculate Quantum Efficiency?
The following two example problems outline how to calculate the Quantum Efficiency.
Example Problem #1:
- First, determine the number of electrons collected. In this example, the number of electrons collected is given as 250.
- Next, determine the number of incident photons. For this problem, the number of incident photons is given as 321.
- Finally, calculate the Quantum Efficiency using the equation above:
Eq = EC / IP
Inserting the values from above and solving the equation:
Eq = 250 / 321 = .778
Example Problem #2:
Using the same process as above, first define the variables required by the formula. In this case, these values are:
number of electrons collected = 231
number of incident photons = 984
Entering these values yields:
Eq = 231 / 944 = .244
