SiC – Karāpi Hiraka

I kitea te warowaihā silicon i te tau 1893 hei mea whakakoi ahumahi mō ngā wira huri me ngā parai motuka. I waenganui o te rautau 20, i tipu haere te whakamahinga o te wafer SiC ki roto i te hangarau LED. Mai i taua wā, kua whānui haere ki ngā tono maha o te semiconductor nā ōna āhuatanga ā-tinana pai. Ka kitea ēnei āhuatanga i roto i tōna whānuitanga o ngā whakamahinga i roto me waho o te umanga semiconductor. I te mea kua tae te Ture a Moore ki tōna rohe, he maha ngā kamupene i roto i te umanga semiconductor e titiro ana ki te warowaihā silicon hei rauemi semiconductor o te heke mai. Ka taea te whakaputa i te SiC mā te whakamahi i ngā momo SiC maha, ahakoa i roto i te umanga semiconductor, ko te nuinga o ngā papa he 4H-SiC, ā, ka iti haere te 6H- i te tipu haere o te mākete SiC. Ina kōrerohia te warowaihā silicon 4H- me te 6H-, ko te H te hanganga o te whatunga karaihe. Ko te tau te tohu i te raupapatanga o ngā ngota i roto i te hanganga karaihe, e whakaahuatia ana tēnei i roto i te tūtohi āheinga SVM i raro nei. Ngā Painga o te Pakari o te Warowaihā Silicon He maha ngā painga o te whakamahi i te warowaihā silicon ki runga ake i ngā papa silicon tuku iho. Ko tētahi o ngā painga nui o tēnei rauemi ko tōna pakeke. He maha ngā painga o tēnei rauemi, i roto i ngā tono tere teitei, pāmahana teitei me/ranei ngaohiko teitei. He nui te kawe wera o ngā papa waro silicon carbide, ko te tikanga ka taea e rātou te whakawhiti wera mai i tētahi pūwāhi ki tētahi atu puna. Ka whakapai ake tēnei i tōna kawe hiko me te whakaitiiti, tētahi o ngā whāinga noa o te huri ki ngā papa waro SiC. Ngā āheinga wera He iti hoki te tauwehenga o ngā papa SiC mō te whakawhānui wera. Ko te whakawhānui wera ko te nui me te ahunga e whakawhānuihia ana, e whakawhāitihia ana rānei e tētahi rauemi i a ia e wera ana, e whakamatao ana rānei. Ko te whakamārama tino noa ko te hukapapa, ahakoa he rerekē tana whanonga i te nuinga o ngā konganuku, e whakawhānui ana i a ia e whakamatao ana, ā, e mimiti ana i a ia e wera ana. Ko te tauwehenga iti o te waro silicon carbide mō te whakawhānui wera ko te tikanga kāore e tino rerekē te rahi, te āhua rānei i a ia e whakamahanahia ana, e whakamatao ana rānei, he mea tino pai mō te whakauru ki ngā taputapu iti me te tākai i ētahi atu transistors ki runga i tētahi maramara kotahi. Ko tētahi atu painga nui o ēnei papa ko tōna ātete teitei ki te ru wera. Ko te tikanga he kaha ki te whakarerekē tere i ngā pāmahana me te kore e pakaru, e ngatata rānei. Ka hangaia he painga mārama i te wā e hanga ana i ngā taputapu nā te mea ko tētahi atu āhuatanga pakari e whakapai ake ana i te roanga o te ora me te mahi a te waro silicon carbide ki te whakataurite ki te silicon papatipu tuku iho. Haunga ōna āheinga wera, he papa tino pakari tēnei, ā, kāore e tauhohe ki ngā waikawa, ki ngā kawakore, ki ngā tote rewa rānei i ngā pāmahana tae atu ki te 800°C. Mā tēnei ka taea e ēnei papa te whakamahi i roto i ā rātou mahi, ā, ka āwhina anō hoki i tō rātou kaha ki te mahi i te silicon papatipu i roto i ngā mahi maha. Nā tōna kaha i ngā pāmahana teitei ka taea hoki te mahi haumaru i ngā pāmahana neke atu i te 1600°C. Nā tēnei ka pai hei papa mō te nuinga o ngā mahi pāmahana teitei.