A lokacin da wani photon na isasshen makamashi hits da diode, shi ya haifar da wani electron <unk>hole biyu. Wannan inji kuma aka sani da ciki photoelectric sakamako. Idan sha ya auku a cikin junction ta depletion yankin, ko daya watsawa tsawon daga gare ta, wadannan dako suna kewaye daga junction da gina-in lantarki filin na depletion yankin. Ta haka ne ramuka matsawa zuwa ga anode, da kuma electrons zuwa ga cathode, da kuma photocurrent aka samar.
photon (hoton)