SiC - Silicon Carbide

Silicon carbide an gano shi a cikin 1893 a matsayin gurɓataccen masana'antu don niƙa ƙafafun da birki na mota. Kusan tsakiyar tsakiyar karni na 20, SiC wafer yana girma don haɗawa cikin fasahar LED. Tun daga wannan lokacin, ya faɗaɗa zuwa aikace-aikacen semiconductor da yawa saboda fa'idodinsa na zahiri. Waɗannan kaddarorin suna bayyana a cikin faffadan amfaninsa a ciki da wajen masana'antar semiconductor. Tare da bayyanar Dokar Moore ta isa iyakarta, kamfanoni da yawa a cikin masana'antar semiconductor suna kallon silicon carbide azaman kayan semiconductor na gaba. Ana iya samar da SiC ta amfani da nau'ikan nau'ikan SiC da yawa, kodayake a cikin masana'antar semiconductor, yawancin abubuwan da ake amfani da su ko dai 4H-SiC ne, tare da 6H- zama ƙasa da gama gari kamar yadda kasuwar SiC ta girma. Lokacin magana akan 4H- da 6H- silicon carbide, H yana wakiltar tsarin lattice crystal. Lambar tana wakiltar jerin abubuwan tarawa na atom a cikin tsarin crystal, an kwatanta wannan a cikin ginshiƙi damar SVM da ke ƙasa. Fa'idodin Taurin Silicon Carbide Akwai fa'idodi da yawa don amfani da siliki carbide akan ƙarin abubuwan siliki na gargajiya. Ɗaya daga cikin manyan fa'idodin wannan abu shine taurinsa. Wannan yana ba kayan fa'idodi da yawa, cikin babban sauri, babban zafin jiki da / ko aikace-aikacen wutar lantarki mai girma. Silicon carbide wafers suna da babban yanayin zafi, wanda ke nufin za su iya canja wurin zafi daga wannan batu zuwa wata rijiya. Wannan yana inganta haɓakar wutar lantarki da kuma ƙarar ƙaranci, ɗaya daga cikin burin gama gari na sauyawa zuwa wafers na SiC. Ƙarfin zafin jiki SiC substrates suma suna da ƙarancin ƙima don faɗaɗa thermal. Fadada thermal shine adadin da jagorar abu yana faɗaɗa ko kwangila yayin da yake zafi ko sanyi. Mafi yawan bayani shine ƙanƙara, ko da yake yana nuna sabanin yawancin karafa, yana faɗaɗa yayin da yake sanyi kuma yana raguwa yayin da yake zafi. Silicon carbide's low coefficient for thermal expansion yana nufin cewa baya canzawa sosai cikin girma ko siffa yayin da ake zafi ko sanyaya, wanda ya sa ya zama cikakke don dacewa cikin ƙananan na'urori da tattara ƙarin transistor akan guntu ɗaya. Wani babban fa'ida na waɗannan abubuwan haɗin gwiwa shine tsayin daka da juriya na zafin zafi. Wannan yana nufin suna da ikon canza yanayin zafi cikin sauri ba tare da karye ko tsagewa ba. Wannan yana haifar da fa'ida bayyananne lokacin ƙirƙira na'urori kamar yadda wani nau'in tauri ne wanda ke haɓaka rayuwa da aikin silicon carbide idan aka kwatanta da siliki mai girma na gargajiya. A saman iyawar thermal, abu ne mai ɗorewa kuma baya amsawa da acid, alkalis ko narkakken gishiri a yanayin zafi har zuwa 800 ° C. Wannan yana ba wa waɗannan abubuwan juzu'i iri-iri a cikin aikace-aikacen su kuma yana ƙara taimaka musu ikon fitar da babban silicon a aikace-aikace da yawa. Ƙarfinsa a yanayin zafi mai girma kuma yana ba shi damar yin aiki lafiya a yanayin zafi sama da 1600 ° C. Wannan ya sa ya zama mai dacewa don kusan kowane aikace-aikacen zafin jiki mai girma.