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from responsivity (, in A/W) to QE_? (on a scale 0 to 1):

where is the wavelength in nm, h is the Planck constant, c is the speed of light in vacuum, and e is the elementary charge. Note that the unit W/A (watts per ampere) is equivalent to V (volts).

Determination

where = number of electrons produced, = number of photons absorbed.

Assuming

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