Vim tias qhov sib txawv ntawm qhov sib txawv me me rau cov khoom siv semiconductors, doping nrog me me ntawm impurities tuaj yeem ua rau cov khoom siv hluav taws xob nce ntxiv. Doping, yog li ntawd, tso cai rau cov kws tshawb fawb los siv cov khoom ntawm cov khoom siv hu ua "dopants" txhawm rau hloov kho cov conductivity ntawm ib qho semiconductor.
Yuav ua li cas doping txhim kho conductivity ntawm ib tug semiconductor?
txheej txheem ntawm kev ntxiv impurity atoms rau ntshiab semiconductor lossis ib qho khoom siv hauv nruab nrab hu ua "doping". … Txij li thaum, tus naj npawb ntawm cov hluav taws xob dawb nce los ntawm qhov sib ntxiv ntawm impurity, nws yuav pab ntxiv rau hauv kev coj ua. Los ntawm cov txheej txheem zoo li no, doping ua rau cov khoom siv hluav taws xob ntau ntxiv.
Lub hom phiaj ntawm doping yog dab tsi?
Doping yog cov txheej txheem siv los hloov cov lej ntawm cov hluav taws xob thiab qhov hauv cov khoom siv hluav taws xob. Doping tsim N-hom khoom thaum cov khoom siv semiconductor los ntawm pawg IV yog doped nrog pawg V atoms. Cov ntaub ntawv P-hom yog tsim thaum cov khoom siv semiconductor los ntawm pawg IV yog doped nrog pawg III atoms.
Dab tsi yog qhov zoo ntawm doping ib lub semiconductor?
Qhov tseem ceeb rau lawv txoj haujlwm yog txheej txheem hu ua doping, uas cuam tshuam nrog cov khoom tsis huv rau hauv semiconductor los txhim kho nws cov hluav taws xob conductivity. Nws yog qhov no uas tso cai rau ntau yam khoom siv hauv lub hnub ci thiab cov ntxaij vab tshaus LED ua haujlwm.
Dab tsi yog qhov ua rau siab doping?
Nyob zoosiab doping qib wave pob ntawv cuam tshuam nrog qis-zog conduction-band electrons tuaj yeem sib tshooj ntau dua ib qho impurity atom, uas ua rau qis qis qis vim tias lub zog muaj peev xwm txo qis.
