Silicon carbide (SiC), a matsayin wani nau'in kayan semiconductor mai faɗi da faɗi, yana taka muhimmiyar rawa wajen amfani da kimiyya da fasaha ta zamani. Silicon carbide yana da kyakkyawan kwanciyar hankali na zafi, juriya ga filin lantarki, da kuma wasu kyawawan halaye na zahiri da na gani, kuma ana amfani da shi sosai a cikin na'urorin lantarki da na'urorin hasken rana. Saboda ƙaruwar buƙatar na'urorin lantarki masu inganci da karko, ƙwarewar fasahar ci gaban silicon carbide ya zama abin jan hankali.
To, nawa ka sani game da tsarin ci gaban SiC?
A yau za mu tattauna manyan dabaru guda uku don haɓaka lu'ulu'u guda ɗaya na silicon carbide: jigilar tururi na jiki (PVT), epitaxy na lokaci-lokaci na ruwa (LPE), da kuma adana tururin sinadarai masu zafi (HT-CVD).
Hanyar Canja Tururi ta Jiki (PVT)
Hanyar canja wurin tururin jiki tana ɗaya daga cikin hanyoyin girma na silicon carbide da aka fi amfani da su. Girman silicon carbide guda ɗaya ya dogara ne akan sublimation na sic powder da sake sanya shi a kan iri crystal a ƙarƙashin yanayin zafi mai yawa. A cikin rufaffen graphite crucible, ana dumama foda silicon carbide zuwa babban zafin jiki, ta hanyar sarrafa yanayin zafi, tururin silicon carbide yana taruwa a saman crystal ɗin iri, kuma a hankali yana girma babban crystal guda ɗaya.
Mafi yawan siC ɗin monocrystalline da muke samarwa a yanzu ana yin su ne ta wannan hanyar ci gaba. Haka kuma ita ce babbar hanyar da ake amfani da ita a masana'antar.
Epitaxy na lokaci mai ruwa (LPE)
Ana shirya lu'ulu'u na silicon carbide ta hanyar epitaxy na ruwa ta hanyar tsarin girma na lu'ulu'u a mahaɗin ruwa mai ƙarfi. A cikin wannan hanyar, ana narkar da foda na silicon carbide a cikin maganin silicon-carbon a babban zafin jiki, sannan a rage zafin don silicon carbide ya fito daga maganin kuma ya girma akan lu'ulu'u na iri. Babban fa'idar hanyar LPE ita ce ikon samun lu'ulu'u masu inganci a ƙaramin zafin jiki na girma, farashin yana da ƙasa kaɗan, kuma ya dace da samar da manyan girma.
Tsaftace Tururin Sinadaran da ke Zafi Mai Zafi (HT-CVD)
Ta hanyar shigar da iskar gas da ke ɗauke da silicon da carbon a cikin ɗakin amsawa a zafin jiki mai yawa, ana ajiye layin kristal guda ɗaya na silicon carbide kai tsaye a saman kristal ɗin iri ta hanyar amsawar sinadarai. Amfanin wannan hanyar shine cewa ana iya sarrafa saurin kwarara da yanayin amsawar iskar gas daidai, don samun kristal ɗin silicon carbide mai tsabta da ƙarancin lahani. Tsarin HT-CVD na iya samar da lu'ulu'u na silicon carbide masu kyawawan halaye, wanda yake da mahimmanci musamman ga aikace-aikace inda ake buƙatar kayan aiki masu inganci sosai.
Tsarin girma na silicon carbide shine ginshiƙin aikace-aikacensa da haɓaka shi. Ta hanyar ci gaba da ƙirƙira da inganta fasaha, waɗannan hanyoyin girma guda uku suna taka rawar da suka dace don biyan buƙatun lokatai daban-daban, suna tabbatar da mahimmancin matsayin silicon carbide. Tare da zurfafa bincike da ci gaban fasaha, tsarin girma na kayan silicon carbide zai ci gaba da ingantawa, kuma za a ƙara inganta aikin na'urorin lantarki.
(yin bincike)
Lokacin Saƙo: Yuni-23-2024