Metric · Photonics, MEMS & Sensors
Quantum efficiency
The fraction of incident photons at a given wavelength that a detector converts into collected charge carriers, expressed as a percentage. It is a core sensitivity figure for image sensors and photodiodes alike.
- Also known as
- QE
- Type
- Metric
- Domain
- Photonics, MEMS & Sensors, Image sensors
Notes
Backside illumination and microlens design are the main levers for raising it once the photodiode process is fixed.
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