Iifilimu ezincinci ezisetyenziswa kwimveliso ye-semiconductor zonke zinokuchasana, kwaye ukuchasana kwefilimu kunempembelelo ngqo ekusebenzeni kwesixhobo. Ngokuqhelekileyo asilinganisi ukuchasana ngokupheleleyo kwefilimu, kodwa sebenzisa ukuchasana kweshiti ukuyibonakalisa.
Yintoni ukumelana nephepha kunye nokumelana nomthamo?
I-Volume resistivity, ekwabizwa ngokuba yi-volume resistivity, yipropathi engokwemvelo yezinto ezibonakalayo ebonisa ukuba ubungakanani bemathiriyeli buthintela ukuhamba kombane. Isimboli eqhele ukusetyenziswa ρ imele, iyunithi ngu Ω.
Ukuchaswa kwephepha, okwabizwa ngokuba yi-sheet resistance, igama lesiNgesi liyi-sheet resistance, elibhekiselele kwixabiso lokumelana nefilimu kwindawo yeyunithi. Iisimboli eziqhele ukusetyenziswa Rs okanye ρs ukuchaza, iyunithi yi Ω/sq okanye Ω/●
Ubudlelwane phakathi kwezi zimbini: ukuxhathisa kweshiti = ukumelana nomthamo/ubukhulu befilimu, oko kukuthi, Rs =ρ/t
Kutheni ulinganisa ukuchasana kweshiti?
Ukulinganisa ukuxhathisa ngokupheleleyo kwefilimu kufuna ulwazi oluchanekileyo lwemilinganiselo yejiyometri yefilimu (ubude, ububanzi, ubukhulu), enezinto ezininzi eziguquguqukayo kwaye intsonkothe kakhulu kwiifilimu ezibhityileyo kakhulu okanye ezimile ngendlela engaqhelekanga. Ukuchaswa kwephepha kuhambelana kuphela nobukhulu befilimu kwaye kunokukhawuleza kwaye kuhlolwe ngokuthe ngqo ngaphandle kokubala ubungakanani obunzima.
Zeziphi iifilimu ezifuna ukulinganisa ukuxhathisa kwamaphepha?
Ngokuqhelekileyo, iifilimu eziqhubayo kunye neefilimu ze-semiconductor kufuneka zilinganiswe ukuchasana kwesikwere, ngelixa iifilimu ezikhuselayo azidingi ukulinganiswa.
Kwi-doping ye-semiconductor, ukuxhathisa kwamaphepha e-silicon kuyalinganiswa.
Indlela yokulinganisa ukuxhathisa isikwere?
Indlela yokuhlola ezine isetyenziswa ngokubanzi kushishino. Indlela ye-probe emine inokulinganisa ukuchasana kwesikwere ukusuka kwi-1E-3 ukuya kwi-1E + 9Ω / sq. Indlela ye-probe emine inokuphepha iimpazamo zokulinganisa ngenxa yokuchasana koqhagamshelwano phakathi kweprobe kunye nesampuli.
Iindlela zokulinganisa:
I-1) Beka iiprobes ezine ezicwangciswe ngokulandelelana kumphezulu wesampuli.
2) Faka isicelo esiqhubekayo phakathi kweeprobes ezimbini zangaphandle.
I-3) Qinisekisa ukuchasana ngokulinganisa umahluko onokuthi ubekho phakathi kweeprobe ezimbini zangaphakathi
RS : ukuchasa iphepha
ΔV: Ukutshintsha kombane olinganiswa phakathi kweeprobe zangaphakathi
Mna : Isetyenziswa ngoku phakathi kweeprobe zangaphandle
Ixesha lokuposa: Mar-29-2024