Diode e entsoe ka pokano ea PN, 'me photodiode e ka fetola lets'oao la optical hore e be lets'oao la motlakase, joalo ka ha ho bonts'itsoe ka tlase:
Hangata, covalent bond e ionized ha PN junction e bonesitsoe ka leseli.Sena se etsa masoba le lipara tsa elektronike.Photocurrent e hlahisoa ka lebaka la ho hlahisa lihlopha tsa electron-hole.Ha li-photon tse nang le matla a fetang 1.1 eV li otla Diode, lipara tsa electron-hole li tla thehoa.Ha photon e kena sebakeng se senyehileng sa Diode, e otla athomo ka matla a phahameng.Sena se fella ka ho lokolloa ha li-electrone ho tloha mohahong oa athomo.Ka mor'a hore lielektrone li lokolloe, lielektrone tse sa lefelloeng le masoba li hlahisoa.Ka kakaretso, li-electrone li qosoa hampe, 'me masoba a qosoa hantle.Matla a fokolitsoeng a tla ba le sebaka sa motlakase se hahiloeng.Ka lebaka la sebaka sena sa motlakase, para ea electron-hole e hole haholo le PN junction.Ka hona, masoba a fallela ho anode, 'me lielektrone li fallela ho cathode ho hlahisa photocurrent.
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Thepa ea photodiode e khetholla boholo ba litšobotsi tsa eona.Tšobotsi ea bohlokoa ke leqhubu la khanya leo photodiode e arabelang ho lona, 'me e' ngoe ke boemo ba lerata, tseo ka bobeli li itšetlehileng haholo ka thepa e sebelisoang photodiode.Lisebelisoa tse fapaneng li sebelisa likarabo tse fapaneng ho maqhubu a maqhubu hobane ke li-photon feela tse nang le matla a lekaneng tse ka hlasimollang lielektrone ka har'a lekhalo la lihlopha tsa thepa le ho hlahisa matla a bohlokoa a ho hlahisa hona joale ho tsoa ho photodiode.
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Leha kutloisiso ea maqhubu a lisebelisoa e le ea bohlokoa, paramente e 'ngoe e ka amang ts'ebetso ea li-photodiode haholo ke boemo ba lerata bo hlahisoang.Ka lebaka la lekhalo la bona le leholo la lihlopha, silicon photodiodes e hlahisa lerata le fokolang ho feta germanium photodiodes.Leha ho le joalo, ho boetse hoa hlokahala ho nahana ka bolelele ba wavelength ea photodiode, mme germanium photodiode e tlameha ho sebelisoa bakeng sa wavelengths e telele ho feta 1000 nm.
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Ka holimo ke tlhaloso ea tsebo ea Diode e tlisoang ke Shenzhen HDV Phoelectron Technology Co., Ltd., e leng moetsi oa puisano oa optical le ho hlahisa lihlahisoa tsa puisano.Rea u amohela hopatlisiso.