polysilicon muaj ib tug grey metallic luster thiab ib tug ceev ntawm 2.32 ~ 2.34g / cm3. Melting point 1410℃. Cov ntsiab lus kub 2355℃. Soluble nyob rau hauv ib tug sib tov ntawm hydrofluoric acid thiab nitric acid, insoluble nyob rau hauv dej, nitric acid thiab hydrochloric acid. Nws hardness yog nruab nrab ntawm germanium thiab quartz. Nws yog nkig ntawm chav tsev kub thiab yooj yim tawg thaum txiav. Nws ua ductile thaum rhuab mus rau saum 800℃, thiab qhia pom tseeb deformation ntawm 1300℃. Nws yog inactive nyob rau hauv chav tsev kub thiab reacts nrog oxygen, nitrogen, sulfur, thiab lwm yam nyob rau hauv high kub. Nyob rau hauv qhov kub-kub molten lub xeev, nws muaj cov tshuaj lom neeg ua haujlwm zoo thiab tuaj yeem cuam tshuam nrog yuav luag txhua yam khoom. Nws muaj cov khoom siv hluav taws xob semiconductor thiab yog ib qho tseem ceeb heev thiab zoo heev cov khoom siv semiconductor, tab sis cov kab ntawm impurities tuaj yeem cuam tshuam rau nws cov conductivity. Nws yog dav siv nyob rau hauv kev lag luam electronics raws li ib tug yooj yim cov ntaub ntawv rau kev tsim semiconductor xov tooj cua, daim kab xev recorders, tub yees, xim TVs, video recorders, thiab electronic computers. Nws yog tau los ntawm chlorinating qhuav silicon hmoov thiab qhuav hydrogen chloride gas nyob rau hauv tej yam kev mob, thiab ces condensing, distilling, thiab txo.
polysilicon tuaj yeem siv los ua cov khoom siv raw rau rub ib leeg siv lead ua silicon. Qhov sib txawv ntawm polysilicon thiab ib qho siv lead ua silicon feem ntau tshwm sim hauv lub cev. Piv txwv li, anisotropy ntawm cov khoom siv kho qhov muag, cov khoom siv kho qhov muag thiab cov khoom siv thermal tsis tshua pom tseeb dua li ntawm ib qho siv lead ua silicon; Nyob rau hauv cov nqe lus ntawm hluav taws xob khoom, lub conductivity ntawm polysilicon muaju kuj tseem nyob deb ntawm qhov tseem ceeb tshaj li ntawm ib tug siv lead ua silicon, thiab txawm yuav luag tsis muaj conductivity. Hais txog kev ua tshuaj lom neeg, qhov sib txawv ntawm ob yog tsawg heev. polysilicon thiab ib leeg siv lead ua silicon tuaj yeem sib txawv ntawm ib leeg hauv qhov tsos, tab sis kev txheeb xyuas tiag tiag yuav tsum tau txiav txim siab los ntawm kev txheeb xyuas cov qauv siv lead ua dav hlau, hom conductivity thiab resistivity ntawm cov siv lead ua. polysilicon yog cov khoom siv ncaj qha rau kev tsim cov khoom siv lead ua silicon, thiab yog cov ntaub ntawv siv hluav taws xob yooj yim rau cov khoom siv semiconductor niaj hnub xws li kev txawj ntse, kev tswj tsis siv neeg, cov ntaub ntawv ua, thiab kev hloov pauv photoelectric.
Post lub sij hawm: Oct-21-2024