Kei te whakahaerehia te hanga hiko haurua-whakahaere i te wāhi e hono ana i ngā taiao tino tika me ngā taiao tino kino. Ko ngā tukanga pēnei i te epitaxy, te tipu tioata, me te whakamahana i te pāmahana teitei ka neke ake i te 1000°C, ā, ahakoa ngā piki me ngā heke iti o te pāmahana ka taea te huri hei rerekētanga ine i roto i te matotoru o te kiriata, te tohatoha i ngā mea tāpiri, ā, i te mutunga, te mahi a te taputapu. I roto i tēnei horopaki, ko ngā rauemi e āhei ai te taiao wera pumau me te taea te tukurua ehara i te mea āwhina - engari he mea tūāpapa.
I roto i ēnei rauemi,te muka whatukua puta ake hei mea nui hei āwhina i te whakahaere wera i roto i ngā tukanga haurua-ā-ira matatau. He maha ngā wā ka warewarehia ki te whakataurite ki ngā papa whakarewa, ki ngā taputapu whakatakotoranga rānei, ko ngā pūnaha whakamarumaru karāpeti—ina koa ko te papanga karāpeti parakore teitei mō te whakamarumaru wera—he mahi nui ki te pupuri i te pumau o te tukanga, te whakapai ake i te hua, me te tautoko i te whakawhiti ki ngā haurua-ā-ira whānui-rohe pērā i te SiC me te GaN.
Te Āhua Rauemi o te Wēra Karāpiti
He mea hanga ki te huruhuru graphite, e kiia ana i ētahi wā komuka waro, he rauemi pūwero, māmā hoki i hangaia mai i ngā muka waro kua werowerohia kia whiwhi ai i te parakore teitei me te pumau hanganga. I runga i ngā tikanga tukatuka, ka taea te tuku hei whariki whakamarumaru ngohengohe,te muka whatu mārō, he whatu mārō karāpeti rānei, ia mea i hangaia mō ngā whakaritenga wera me ngā whakaritenga ā-mīhini.
Ko te mea e wehewehe ai te whakamahana karāpeti i ngā rauemi whakamahana tuku iho ko tōna huinga ahurei o ngā āhuatanga. He tino iti te kawe wera, e āhei ai te pupuri wera pai ahakoa i roto i ngā taiao pāmahana tino teitei. I te wa ano, ka mau tonu te hanganga pai i ngā pāmahana neke atu i te 2000°C i roto i ngā hau kore mahi, i ngā hau whakaiti rānei. Ko tōna kore mahi matū me ngā taumata poke iti - inā koa i roto i ngā rauemi semiconductor-grade - ka whakarite kia iti rawa te mōrearea poke, he mea nui tēnei i roto i ngā tukanga hanga o mua.
I roto i ngā tono matatau, ka whakapaitia anō te whatu karāti parakore teitei mō te whakamahana wera hei whakaiti i ngā poke whakarewa ki ngā taumata ppm, ki raro iho rānei i te ppm. E hangai ana tēnei taumata parakore ki ngā whakaritenga whakahaere poke pakari o ngā whare hanga haurua-ā-ira hou, inā koa i roto i ngā tukanga e whakamahi ana i ngā haurua-ā-ira matū.
Ngā tono i roto i ngā tukanga matua o te semiconductor
Ko te whakamahinga nui rawa atu o te whatu karāpiti kei roto i tōna kaha ki te hanga me te whakau i ngā mara wera puta noa i te whānuitanga o ngā tukanga pāmahana-tiketike. I roto i te tipu epitaxial, ahakoa mō te silicon, te silicon carbide, te gallium nitride rānei, he mea nui te pupuri i te tohatoha pāmahana ōrite puta noa i te mata o te wafer. Ko te whatu karāpiti ka whakauruhia ki roto i te tauhohenga hei paparanga ārai, ka takai ki ngā huānga whakamahana, ka whakanohoia rānei ki muri i ngā pūoko. Mā te whakaiti i ngā pikinga pāmahana radial me te axial, ka taea te tere tipu ōrite me ngā āhuatanga rauemi ōrite, ka pā tika ki te mahi me te hua o te taputapu.
I roto i te epitaxy silicon carbide, ina tae te pāmahana o te tukanga ki te 1600°C, ka noho te huruhuru whakamarumaru graphite hei mea nui. Kei tua atu i te whakamarumaru noa iho tōna mahi; ka hangaia e ia te āhua wera i roto i te tauhohenga, ka whakarite kia pumau ngā tauhohenga āhua-kohu me te whakaiti i te ahotea wera i runga i ngā papa. Ki te kore he mana whakahaere pēnei, ka nui ake te kitea o ngā take pēnei i te kore ōrite o te matotoru, te piko o te papa, me te hanganga hapa.
Ko ngā tukanga tipu karaihe e whakaatu ana i te hiranga rautaki o te whatu karāpeti. I roto i ngā tikanga pēnei i te kawe kohu ā-tinana (PVT) mō te SiC, i te tukanga Czochralski rānei mō te silicon, ko te pikinga wera i roto i te rūma tipu ka whakatau i te kounga karaihe. I konei, ka whakamahia te whatu karāpeti pakari, te whatu mārō karāpeti rānei hei hanga i ngā rohe whakamahana whakahaeretia. Mā te whakarerekē i te kiato, te matotoru, me te whirihoranga o te whatu, ka taea e ngā kaihangarau te whakatikatika i te rere o te wera, ā, ka pā ki ngā tere tipu karaihe, te kiato hapa, me te kounga whānui o te whatu. I roto i te tipu karaihe SiC, ka hono tika taua whakahaere wera ki te whakaiti i ngā paipa iti me ngā nekehanga.
He mea hanga ki te huruhuru graphiteHe mahi tautoko anō hoki, engari he mea nui i roto i ngā pūnaha whakatakotoranga kohu matū (CVD) me ngā pūnaha whakatakotoranga kohu matū whakarewa-ora (MOCVD). Hei whakamahana karāpeti, ka āwhina i te pupuri i tētahi taiao wera pumau i roto i te tauhohenga, ka whakaiti i te ngaronga wera me te whakaiti i ngā pānga o te pakitara makariri. Ka whai wāhi tēnei ki te whakapai ake i te ōritetanga o te whakatakotoranga me te auau o te tukanga, inā koa i roto i ngā taiao whakaputa nui.
I roto i ngā tukanga whakamahana me te tohatoha pāmahana teitei, inā koa ko ērā e pā ana ki ngā semiconductors whānui-rohe, ka whai wāhi te huruhuru graphite ki te whai huatanga o te pūngao me te pumau o te wera. Mā te whakaiti i te mararatanga wera, ka taea e ngā oumu te pupuri i ngā pāmahana ōrite me te iti o te whakaurunga pūngao, me te whakaiti hoki i te ahotea huringa wera i runga i ngā wāhanga tukanga.
Haunga te hanga i te anga wafer, he whānuitia te whakamahinga o te whatu karāhe i roto i te tukatuka rauemi o mua, tae atu ki te whakamahana paura, te hanga uku, me te purenga o ngā wāhanga karāhe. Ahakoa kāore e kitea tonutia ana i roto i te whare hanga haurua-ira, he mea nui ēnei tukanga mō te whakaputa i ngā rauemi mahi-teitei e tautoko ana i te hanga taputapu matatau.
Ngā Auahatanga: Te Whakaneke Atu i te Parakore me te Whakaurunga Mahi
I te whanaketanga o te umanga haurua-ira ki ngā tono uaua ake—ina koa i roto i ngā waka hiko, te pūngao hou, me ngā hikohiko auau-tiketike—kei te kaha haere ngā whakaritenga e whakatakotoria ana ki ngā rauemi whakahaere wera. E kitea nuitia ana tēnei ia i roto i te tere o te whakamahi i ngā hangarau SiC me GaN, i reira ko ngā pāmahana whakahaere teitei ake me ngā matapihi tukanga kikī ake e hiahia ana ki te mahi whakamahana pai ake.
Ko tētahi o ngā whanaketanga tino nui ko te pana ki ngā rauemi tino parakore. Kei te hangaia te whatu karāpeti parakore mō te whakamahana me ngā taumata poke iti ake kia tutuki ai ngā paerewa poke o ngā whare hanga o muri mai. I taua wā anō, ko ngā auahatanga hanganga pēnei i te whatu karāpeti pakari me te whatu karāpeti mārō kei te āhei ki te whakahaere i te papa wera tika ake me te roa ake o te ora ratonga.
Ko tētahi atu ia o ngā āhuatanga nui ko te whakaurunga o ngā paninga tiaki, pērā i te silicon carbide (SiC), ki runga i ngā mata whatu karāhe. Ka whakarei ake ēnei paninga i te ātete waikura, ka whakaiti i te whakaputanga matūriki, ka whakaroa i te roa o te mahi, ka aro atu ki ētahi o ngā herenga tuku iho o ngā rauemi whakamahana waro.
Te titiro whakamua,te muka whatue matapaetia ana ka whanake mai i te reo whakamahana kore mahi ki tētahi wāhanga hoahoa taputapu haurua-ā-ira e kaha ake ana te hanga. Mā te tukatuka rauemi matatau me te whakaritenga, ka tautoko tonu i te whai a te umanga i te whai huatanga teitei ake, te pono ake, me te whakahaere tukanga pakari ake.
Wā tuku: 17 Paenga-whāwhā 2026