Mafirimu matete anoshandiswa mukugadzira semiconductor ese ane kuramba, uye kuramba kwemufirimu kune kwakanangana nekuita kwechishandiso. Isu kazhinji hatiyere kupikisa zvachose kwefirimu, asi shandisa shizha rekudzivirira kuti riratidze.
Chii chinonzi sheet resistance uye volume resistivity?
Vhoriyamu resistivity, inozivikanwawo sevhoriyamu resistivity, inzvimbo yekuzvarwa yechinhu chinotaridza kuti yakawanda sei zvinhu zvinokanganisa kuyerera kwemagetsi ikozvino. Chiratidzo chinowanzo shandiswa ρ chinomiririra, chikwata ichi Ω.
Sheet resistance, inozivikanwawo sesheet resistance, zita rechirungu ndiro sheet resistance, zvinoreva kukosha kwekupokana kwefirimu pachikamu chechikamu. Zviratidzo zvinowanzo shandiswa maRs kana ρs kuratidza, chikamu ndi Ω/sq kana Ω/●
Hukama huri pakati pezviviri ndehwe: sheet resistance = vhoriyamu resistivity/firimu ukobvu, kureva, Rs =ρ/t
Sei kuyera sheet kuramba?
Kuyera kupikisa zvachose kwefirimu kunoda ruzivo rwakakwana rwezviyero zvejometri zvefirimu (kureba, upamhi, ukobvu), iyo ine zvakawanda zvakasiyana-siyana uye yakaoma zvikuru kune mafirimu akaonda zvikuru kana asina kufanana. Iyo shizha kuramba inongoenderana nekukora kwefirimu uye inogona kukurumidza uye yakananga kuyedzwa pasina kuomesesa saizi kuverenga.
Ndeapi mafirimu anoda kuyera kuramba kwemashizha?
Kazhinji, mafirimu ekufambisa uye semiconductor mafirimu anofanirwa kuyerwa kuti apiwe mativi, nepo mafirimu ekudzivirira haadi kuyerwa.
Mune semiconductor doping, iyo shizha kuramba kwesilicon inoyerwa zvakare.
Nzira yekuyera sei square resistance?
Iyo ina-probe nzira inowanzoshandiswa muindasitiri. Iyo ina-probe nzira inogona kuyera square resistance kubva pa1E-3 kusvika 1E+9Ω/sq. Iyo ina-probe nzira inogona kudzivirira kuyerwa kukanganisa nekuda kwekusangana kuramba pakati peprobe uye sampuli.
Nzira dzekuyera nadzo:
1) Seta mana ane mutsara akarongwa probe pamusoro peiyo sampuli.
2) Isa mhepo inogara iripo pakati pemaprobe maviri ekunze.
3) Sarudza kushorwa nekuyera mutsauko unokwanisa pakati pezviviri zvemukati probes
RS: shizha kuramba
ΔV: Shanduko mumagetsi akayerwa pakati pemapurobe emukati
Ini: Yazvino yakashandiswa pakati pekunze probes
Nguva yekutumira: Mar-29-2024