fotodetektor, milles fotovool genereeritakse optilise kiirguse neeldumisel kahe pooljuhi vahelise p-n-siirde või pooljuhi ja metalli vahelise ülemineku läheduses, photoelectric detector in which a photocurrent is generated by absorption of optical radiation in the neighbourhood of a p-n junction between two semiconductors or a junction between a semiconductor and a metal