Each cell will have a loop of bare fiber optic cable to collect the scintillation light, both ends of which lead to an avalanche photodiode for readout.
The emission is also either passed through a filter or a monochromator before being detected by a photomultiplier tube, photodiode, or charge-coupled device detector.
The term photovoltaic denotes the unbiased operating mode of a photodiode in which current through the device is entirely due to the transduced light energy.
