Kusiyana kwakukulu pakati pa N-mtundu ndi P-mtundu wa monocrystalline silicon wafers wa solar photovoltaic
Kusiyana kwakukulu pakati pa N-mtundu ndi P-mtundu wa monocrystalline silicon wafers wa solar photovoltaics
Zophika za silicon za monocrystalline zimakhala ndi mawonekedwe a quasi-zitsulo, zokhala ndi madutsidwe ofooka, ndipo ma conductivity awo amawonjezeka ndi kutentha. Amakhalanso ndi katundu wofunikira wa semiconducting. Pogwiritsa ntchito doping zowotcha zamtundu wa silicon wochuluka kwambiri wokhala ndi boron pang'ono, ma conductivity amatha kuonjezedwa kuti apange P-mtundu wa silicon semiconductor. Mofananamo, doping yokhala ndi phosphorous pang'ono kapena arsenic imathanso kukulitsa madulidwe, kupanga semiconductor yamtundu wa N-silicon. Ndiye, pali kusiyana kotani pakati pa P-mtundu ndi N-mtundu wa silicon wafers?
Kusiyana kwakukulu pakati pa P-mtundu ndi N-mtundu wa monocrystalline silicon wafers ndi motere:
Dopant: Mu silikoni ya monocrystalline, doping yokhala ndi phosphorous imapangitsa kukhala mtundu wa N, ndipo doping yokhala ndi boron imapangitsa P-mtundu.
Kuwongolera: Mtundu wa N ndi ma elekitironi, ndipo mtundu wa P ndiwoyendetsa mabowo.
Magwiridwe: Phosphorous yochulukirapo ikalowetsedwa mumtundu wa N, ma elekitironi aulere amakhala ochulukirapo, kumapangitsa kuti kukhale kolimba, komanso kutsika kwa resistivity. Boron ikalowetsedwa mumtundu wa P, mabowo ochulukirapo amapangidwa posintha silicon, kumapangitsa kuti kukhale kolimba, komanso kutsika kwa resistivity.
Pakadali pano, zowotcha za silicon zamtundu wa P ndizomwe zimagwiritsidwa ntchito kwambiri pamakampani opanga ma photovoltaic. Zophika za silicon zamtundu wa P ndizosavuta kupanga komanso zimakhala zotsika mtengo. Zophika za silicon zamtundu wa N nthawi zambiri zimakhala ndi nthawi yayitali yonyamula anthu ochepa, ndipo mphamvu ya ma cell a solar imatha kukwezedwa, koma njirayi ndi yovuta kwambiri. Zophika za silicon zamtundu wa N zimakhala ndi phosphorous, zomwe sizisungunuka bwino ndi silicon. Pakujambula ndodo, phosphorous sigawidwa mofanana. Zophika za silicon zamtundu wa P zimayikidwa ndi boron, zomwe zimakhala ndi tsankho lofanana ndi silicon, ndipo kufanana kwa kubalalitsidwa ndikosavuta kuwongolera.