| specially calibrated PV cell that is used to measure irradiance or to set simulator irradiance levels to compensate for non-reference spectral irradiance distribution
a) primary reference photovoltaic cell
reference PV cell whose calibration is based on a radiometer or standard detector conforming to the standard World Radiometric Reference (WRR)
b) secondary reference photovoltaic cell
reference PV cell calibrated in natural or simulated sunlight against a primary reference cell |