Iyo Diode inoumbwa nePN junction, uye iyo photodiode inogona kushandura chiratidzo chemaziso kuita chiratidzo chemagetsi, sezvinoratidzwa pazasi:
Kazhinji, iyo covalent bond inoiswa ionized kana iyo PN junction yakavhenekerwa nechiedza.Izvi zvinogadzira maburi uye ma electron pairs.Iyo photocurrent inogadzirwa nekuda kwekugadzirwa kwezvikwata zve electron-hole.Kana mafotoni ane simba rinopfuura 1.1 eV arova Diode, maelectron-hole pairs anogadzirwa.Kana photon ichipinda munzvimbo yakapera yeDiode, inorova atomu nesimba guru.Izvi zvinoguma nekuburitswa kwemaerekitironi kubva muchimiro cheatomu.Mushure mekunge maerekitironi asunungurwa, maerekitironi akasununguka uye maburi anogadzirwa.Kazhinji, maerekitironi anochajiswa zvisina kunaka, uye maburi anochajwa zvakanaka.Simba rakapera richava nemunda wemagetsi wakavakirwa.Nekuda kweiyi munda wemagetsi, iyo electron-hole pair iri kure nePN junction.Naizvozvo, maburi anofamba akananga kune anode, uye maerekitironi anofamba akananga kucathode kuti agadzire photocurrent.
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Izvo zvinhu zvephotodiode zvinotarisa akawanda ehunhu hwayo.Hunhu hwakakosha mafungu echiedza anopindurwa nephotodiode, uye imwe yacho nhanho yeruzha, ese ari maviri anoenderana zvakanyanya nezvinhu zvinoshandiswa mufotodiode.Zvishandiso zvakasiyana zvinoshandisa mhinduro dzakasiyana kune wavelengths nekuti chete mafotoni ane simba rakakwana anogona kufadza maerekitironi mubhendi rezvinhu uye kugadzira simba rakakosha kugadzira ikozvino kubva kufotodiode.
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Kunyangwe iyo wavelength senitivity yezvinhu yakakosha, imwe paramende inogona kukanganisa zvakanyanya mashandiro ephotodiodes ndiyo ruzha runogadzirwa.Nekuda kwekukosha kwebhendi gap, silicon photodiodes inoburitsa ruzha rushoma pane germanium photodiodes.Nekudaro, zvinofanirwawo kufunga nezve wavelength yephotodiode, uye iyo germanium photodiode inofanirwa kushandiswa kune wavelengths kureba kupfuura 1000 nm.
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Iri pamusoro ndiyo tsananguro yeruzivo yeDiode yakaunzwa neShenzhen HDV Phoelectron Technology Co., Ltd., inova inogadzira kutaurirana inogadzira uye inogadzira zvigadzirwa zvekutaurirana.Tinokugamuchiraikubvunza.