Diode igizwe nihuriro rya PN, kandi fotodiode irashobora guhindura ibimenyetso bya optique mubimenyetso byamashanyarazi, nkuko bigaragara hano:
Mubisanzwe, covalent bond iba ionisiyonike mugihe ihuriro rya PN rimurikirwa numucyo.Ibi birema ibyobo hamwe na electron ebyiri.Photocurrent ikorwa kubera kubyara amakipe ya electron-umwobo.Iyo fotone ifite ingufu zirenga 1.1 eV ikubise Diode, hazabaho ibice bibiri bya electron-umwobo.Iyo foton yinjiye mukarere ka Diode yagabanutse, ikubita atom n'imbaraga nyinshi.Ibi bivamo kurekura electroni muburyo bwa atome.Nyuma ya electron zirekuwe, hakorwa electroni yubusa nu mwobo.Muri rusange, electron zishyuzwa nabi, kandi ibyobo byashizwemo neza.Ingufu zashize zizaba zifite amashanyarazi yubatswe.Kubera uyu murima w'amashanyarazi, couple ya electron-umwobo iri kure yisangano rya PN.Kubwibyo, ibyobo bigenda byerekeza kuri anode, na electron zigenda zerekeza kuri cathode kugirango zibyare ifoto.
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Ibikoresho bya fotodiode bigena byinshi mubiranga.Ikintu cyingenzi kiranga ni umuhengeri wurumuri fotodiode isubiza, naho ubundi nurwego rwurusaku, byombi biterwa ahanini nibikoresho bikoreshwa muri fotodi.Ibikoresho bitandukanye bifashisha ibisubizo bitandukanye kuburebure bwumuraba kuko fotone yonyine ifite ingufu zihagije irashobora gushimisha electron mumwanya wibikoresho kandi ikabyara imbaraga zikomeye zo kubyara amashanyarazi kuva kuri fotodiode.
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Nubwo uburebure bwumurongo wibikoresho bifite akamaro, ikindi kintu gishobora kugira ingaruka zikomeye kumikorere ya fotodiode ni urusaku rwakozwe.Kuberako icyuho cyacyo gikomeye, silicon Photodiode itanga urusaku ruke ugereranije na fotodi ya germanium.Ariko rero, birakenewe kandi gusuzuma uburebure bwumurongo wa fotodiode, kandi fotodi ya germanium igomba gukoreshwa muburebure bwumurambararo urenga 1000 nm.
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Ibyavuzwe haruguru nubusobanuro bwubumenyi bwa Diode yazanwe na Shenzhen HDV Phoelectron Technology Co., Ltd., uruganda rukora itumanaho rukora kandi rukora ibicuruzwa byitumanaho.Murakaza neza kuriiperereza.