Amafilimu azacile asetshenziswa ekwenziweni kwe-semiconductor wonke anokumelana, futhi ukumelana nefilimu kunomthelela oqondile ekusebenzeni kwedivayisi. Ngokuvamile asilinganisi ukumelana okuphelele kwefilimu, kodwa sebenzisa ukumelana neshidi ukuze sikubonise.
Kuyini ukumelana neshidi kanye nokumelana nevolumu?
Ukumelana nevolumu, okubuye kwaziwe ngokuthi ukumelana nevolumu, kuyimpahla yemvelo yento ebonisa ukuthi impahla ivimbela kangakanani ukuhamba kwamandla kagesi. Uphawu oluvame ukusetshenziswa ρ lumelela, iyunithi ithi Ω.
Ukumelana neshidi, okwaziwa nangokuthi ukumelana neshidi, igama lesiNgisi liwukumelana neshidi, elisho inani lokumelana lefilimu endaweni yeyunithi. Izimpawu ezivame ukusetshenziswa u-Rs noma ρs ukuveza, iyunithi ithi Ω/sq noma Ω/●
Ubudlelwano phakathi kwalokhu okubili yilokhu: ukumelana neshidi = ukumelana nevolumu/ukujiya kwefilimu, okungukuthi, ama-Rs =ρ/t
Kungani ukala ukumelana neshidi?
Ukulinganisa ukumelana okuphelele kwefilimu kudinga ulwazi olunembile lobukhulu bejometri yefilimu (ubude, ububanzi, ukujiya), enezinhlobonhlobo eziningi futhi eyinkimbinkimbi kakhulu kumafilimu azacile kakhulu noma anomumo ongajwayelekile. Ukumelana neshidi kuhlobene kuphela nobukhulu befilimu futhi kungahlolwa ngokushesha futhi ngokuqondile ngaphandle kokubala usayizi oyinkimbinkimbi.
Yimaphi amafilimu adinga ukukala ukumelana neshidi?
Ngokuvamile, amafilimu e-conductive namafilimu e-semiconductor adinga ukulinganiswa ukumelana nesikwele, kuyilapho amafilimu avikelayo engadingi ukulinganiswa.
Ku-doping ye-semiconductor, ukumelana kweshidi kwe-silicon kuyalinganiswa.
Ungakukala kanjani ukumelana nesikwele?
Indlela ye-four-probe ivame ukusetshenziswa embonini. Indlela ye-four probe ingakala ukumelana nesikwele kusukela ku-1E-3 kuya ku-1E+9Ω/sq. Indlela ye-four probe ingagwema amaphutha okulinganisa ngenxa yokumelana nokuxhumana phakathi kwe-probe nesampula.
Izindlela zokulinganisa:
1) Setha ama-probe ahlelwe ngomugqa ebusweni besampula.
2) Faka umsinga ongaguquki phakathi kwama-probe amabili angaphandle.
3) Thola ukumelana ngokulinganisa umehluko ongaba khona phakathi kwama-probe amabili angaphakathi
RS : ukumelana neshidi
ΔV: Ukushintsha ku-voltage kukalwa phakathi kwama-probe angaphakathi
I : Okwamanje isetshenziswa phakathi kwama-probe angaphandle
Isikhathi sokuthumela: Mar-29-2024