Kev qhia txog kis band
Qhov sib txawv ntawm Band (Band gap) yog hais txog qhov sib txawv ntawm band (dav dav yog hluav taws xob hluav taws xob (ev)), lub zog hluav taws xob ntawm cov hluav taws xob hauv qhov khoom tsis tuaj yeem ua tus nqi tas mus li, tab sis qee qhov txuas lub zog siv hluav taws xob, nws yog qhov tsim nyog los ua hluav taws xob dawb hluav taws xob lossis muaj nyob. Lub zog siv hluav taws xob qhov twg muaj hluav taws xob dawb nyob hauv hu ua kev sib cais (uas tuaj yeem ua hluav taws xob), thiab lub zog ntawm lub zog qhov twg tsis muaj qhov hu ua valence band (uas tseem tuaj yeem ua hluav taws xob). Rau cov ciaj ciam hluav taws xob dhau los ua lub ntsej muag hluav taws xob dawb lossis lub qhov, nws yuav tsum tau txais lub zog txaus los hloov los ntawm kev ntaus nqi rau cov txheej txheem sib dhos. Qhov tsawg kawg nkaus tus nqi ntawm lub zog no yog txwv tsis pub muaj band dav.