Diode ya ƙunshi haɗin PN, kuma photodiode na iya canza siginar gani zuwa siginar lantarki, kamar yadda aka nuna a ƙasa:
Yawancin lokaci, haɗin haɗin gwiwa yana ionized lokacin da haɗin PN ya haskaka da haske.Wannan yana haifar da ramuka da nau'ikan lantarki.Ana haifar da hoton yanzu saboda ƙirƙirar ƙungiyoyin ramin lantarki.Lokacin da photons masu ƙarfi fiye da 1.1 eV suka buga Diode, za a samar da nau'ikan ramukan lantarki.Lokacin da photon ya shiga yankin Diode da ya lalace, yana bugun zarra da ƙarfi mai ƙarfi.Wannan yana haifar da sakin electrons daga tsarin atomic.Bayan an saki electrons, ana samar da electrons da ramuka kyauta.Gabaɗaya, ana cajin electrons mara kyau, kuma ana cajin ramuka da kyau.Ƙarƙashin makamashin zai sami ginanniyar filin lantarki.Saboda wannan filin lantarki, nau'in ramin lantarki ya yi nisa da mahadar PN.Sabili da haka, ramukan suna motsawa zuwa ga anode, kuma electrons suna motsawa zuwa ga cathode don samar da hoto na yanzu.
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Kayan abu na photodiode yana ƙayyade yawancin halayensa.Muhimmiyar sifa ita ce igiyar hasken da photodiode ke amsawa, ɗayan kuma shine matakin ƙara, duka biyun sun dogara ne akan kayan da ake amfani da su a cikin photodiode.Kayayyaki daban-daban suna amfani da martani daban-daban zuwa tsayin raƙuman ruwa saboda kawai photons tare da isassun ƙarfi na iya tada hankalin electrons a cikin tazarar band ɗin kayan kuma suna haifar da gagarumin ƙarfi don samar da na yanzu daga photodiode.
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Ko da yake tsayin tsayin daka na kayan yana da mahimmanci, wani siga da zai iya tasiri ga aikin photodiodes shine matakin ƙarar da aka haifar.Saboda mahimmin ratawar rukunin su, silicon photodiodes suna haifar da ƙaranci fiye da germanium photodiodes.Duk da haka, yana da mahimmanci a yi la'akari da tsawon lokacin photodiode, kuma dole ne a yi amfani da germanium photodiode don tsawon tsayi fiye da 1000 nm.
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Abin da ke sama shine bayanin ilimin Diode wanda Shenzhen HDV Phoelectron Technology Co., Ltd. ya kawo, wanda shine masana'antar sadarwa ta gani kuma ke samar da samfuran sadarwa.Barka da zuwatambaya.