He mea nui te paninga TaC mō te hanga taputapu GaN me SiC. Ka whakaratohia he parenga pai ake i ngā taiao tukanga waikura, ka whakarei ake i te pumau wera, ā, ka ārai i te poke. He mea nui ēnei āhuatanga mō te whakatutuki i te mahi me te hua teitei o te taputapu. E matapaetia ana e te mākete taputapu hiko GaN o Āhia-Moananui-a-Kiwa he 19.33% te Tere Tipu Tau i waenga i te tau 2025 me te 2032. Ko te mākete whānui mō ēnei taputapu, ko te uara he USD 2.24 piriona i te tau 2023, e matapaetia ana ka eke ki te USD 18 piriona i te tau 2032, ka tipu i te 25% CAGR. Ko tēnei whānui nui o te mākete e whakaatu ana i te hiahia mō ngā otinga hanga pakari.
Ngā Whakaaro Matua
- Ka tiakina e te paninga TaC ngā taputapu e whakamahia ana hei hanga i ngā taputapu GaN me SiC. Ka ārai i te kino mai i ngā matū kino me te wera nui.
- He pai ake ngā taputapu GaN me SiC i ngā taputapu silicon tawhito. He tere ake tā rātou mahi, he iti ake hoki te mana e whakamahia ana, engari he uaua ki te hanga.
- Mā te paninga TaC ka ma ake ngā taputapu GaN me SiC. Ka ārai i ngā kongakonga paru iti kei uru ki roto i ngā taputapu.
- Mā te paninga TaC ka whakarite kia rite tonu te hanga o ngā taputapu i ia wā. Ko te tikanga he nui ake ngā taputapu pai ka hangaia, ā, he iti ake ngā mea e maumauria ana.
- He mea tino nui te paninga TaC mō te hanga hikohiko mana hou. Ka āwhina i ēnei taputapu matatau ki te mahi pai me te roa ake o te ora.
Ngā Pūrere GaN me SiC: Te Reanga Hikohiko Mana e Whai Ake Nei
He Tirohanga Whānui mō ngā Painga o te Pūrere GaN me te SiC
Ko ngā taputapu Gallium Nitride (GaN) me te Silicon Carbide (SiC) he tino whanaketanga nui i roto i te ao hikohiko. He nui ngā whakapainga e tukuna ana e rātou ki ngā wāhanga tuku iho e hangai ana ki te silicon. Hei tauira, he pai ake ngā āhuatanga o ngā taputapu SiC puta noa i ētahi tawhā nui:
| Tawhā | SiC | Hiraka (Si) | Painga |
|---|---|---|---|
| Āputaputa | 3.2 eV | 1.1 eV | 3x teitei ake |
| Ātete-ā-ringa (RDS(ā-ringa)) | Tae atu ki te 10x te iti iho | Teitei ake | Te whakaiti i ngā ngaronga ara iahiko |
| Tere Whakawhiti | 10-100x tere ake | Pōturi ake | Te whakaiti i ngā mate tauwhiro |
| Te Mahana Hononga Mōrahi | 200–250°C | 125–150°C | 2x teitei ake te whānuitanga mahi |
| Te Arahi Wera | 3.7 W/cm·K | 1.5 W/cm·K | 2.5x te pai ake o te tohatoha wera |
| Āpure Wehewehe | 3 MV/cm | 0.3 MV/cm | 10x teitei ake te aukati hiko |
Ka nui ake te pai o te mahi a ngā taputapu SiC, ā, ka iti ake hoki ngā ngaronga mana. Ka whakaitihia e rātou ngā ngaronga ara iahiko me te whakawhiti. E toru ngā wā teitei ake o te āputa o te SiC i ngā silicon, ka taea ai te hanga paparanga angiangi ake. Ka whakaitihia e tēnei te ātete-ki-te-whakaekenga tae atu ki te tekau ngā wā mō te whakatauranga ngaohiko ōrite. E rima ngā wā iti iho o te ngaronga ara iahiko o te 1200V SiC MOSFET i te silicon IGBT. Ka tere ake hoki te whakawhiti a ngā taputapu SiC i te 10 ki te 100 ngā wā i te silicon, ka whakaitihia ngā ngaronga tauwhiro. Ka whakakorehia e ngā diode SiC Schottky te whakaora whakamuri, ka tangohia te pūtake nui o te ngaronga. Ka mahi ēnei taputapu i ngā pāmahana teitei ake, me te pāmahana hononga mōrahi o te 200–250°C, e rua ngā wā i te silicon. E 2.5 ngā wā pai ake hoki o te ara iahiko wera, ka whakarei ake i te marara wera. Ka ātete ngā hononga ngota kaha o te SiC ki te hekenga hiko me te pakaru o te waikura kuaha, ka whai wāhi ki te roa ake o te ora.
Ngā Wero Hanga mō ngā Pūrere GaN me SiC
He wero hanga motuhake te hanga taputapu GaN me SiC. I ahu mai ēnei wero i ngā āhuatanga taketake o ngā rauemi me ngā tukanga hanga uaua.
Mō ngā taputapu GaN, he maha ngā arai e pā ana ki ngā kaihanga:
- Te Kounga o te Tioata me te Matotoru o te KohaHe uaua te whakatutuki i te kounga tioata teitei me te iti o te mātotoru hapa. He maha ngā wā ka tipu te GaN i runga i ngā papa pēnei i te hapaira, te silicon rānei, he rerekē ngā pūmau whatunga. Ka puta he hapa i te wā e tipu ana te epitaxial nā tēnei koretake, ka pā ki te mahi a te taputapu.
- Ngā Tukanga Tipu EpitaxialHe utu nui ngā tikanga pēnei i te Metal-Organic Chemical Vapor Deposition (MOCVD) ā, me whakahaere tika. He tere ake te tipu o te Hydride Vapor Phase Epitaxy (HVPE) engari ka uaua ake ngā tauhohenga hau me te kounga o te mata.
- Te Whakatō me te WhakaōriteHe uaua te whakatutuki i ngā taumata tāpiringa ōrite, inā koa mō te GaN momo-p. Nā ngā āhuatanga o te rauemi me ngā tukanga matū uaua tēnei.
- Te Wātea me te Utu o te PapatūānukuKa pā te wātea me te utu o ngā papa ki te tauine o te GaN. He iti ake te utu o ngā papa silicon engari he nui ake ngā rerekētanga whatunga.
He nui hoki ngā uauatanga e pā ana ki te hanga taputapu SiC:
- Te Pakari me te Pakaru Tino NuiKo te pakeke o te SiC (Mohs 9) me tōna pakarukaru ka uaua te hanga. He puhoi, he koretake hoki te whakakanapa i te anga whakarewa, ā, me whakamahi ngā para motuhake.
- Te Whakahaere i te WaferHe uaua te whakahaere i ngā anga SiC nā te mea he pakarukaru. Ka hua ake tēnei i te pakarukaru, te ngatata, me te poke o ngā matūriki.
- Ngā Whakaritenga EpitaxyKo te epitaxy mō te SiC me teitei ake ngā pāmahana i te silicon. Ka whakapotohia te roa o te ora o ngā wāhanga rūma, ā, ka piki ake ngā utu tiaki.
- Te Whakatōnga IonTe whakaurunga konumohe mō ngā mata doping momo-p, ngā take pumau o te pūtake katote. Kāore e ngawari te horapa o ngā dopant, ā, ka taea te hanga i ngā rua. Ka taea e ngā pāmahana whakamahana teitei (1800°C) te whakakāhore i te mata.
Te Raru Matua: Te Pirautanga me te Parahanga o ngā Rauemi i roto i te Tukatuka
Te Waikura me te Horo o ngā Taputapu i ngā Taiao Kino
Ka pāngia ngā taputapu hanga hiko hiko e te pirau me te kakahu nui. Ko ngā taiao kino, tae atu ki te pānga ki ngā matū waikura me ngā tukanga whakakoi, te take o ēnei raruraru. Ka hua ake tēnei i te poto o te roa o te ora o ngā taputapu me te ngoikore o te whai huatanga o te whakaputa. Ina koa ko ngā taputapu whakairo me te whakatakotoranga, ka tu atu ki ngā āhuatanga tino kino. Ka pāngia rātou e te plasma, te pāmahana teitei, me ngā matū tauhohe. Ka hua ake i ēnei āhuatanga te pirau me te whakaeke matū. Ka whai wāhi ngātahi ēnei āhuatanga ki te rahunga o ngā taputapu mā te whakaiti i ngā rauemi me te whakaiti i te mahi a te taputapu.
He maha ngā wā ka puta he "tikanga pakaru hononga waikura-kākahu". Ka ngoikore te kaha o te here o te rohe witi nā te mea waikura. Mā tēnei ngoikore ka tere te horapa o ngā kapiti ngenge i puta mai i te waku. Ka horapa ēnei kapiti i ngā rohe whakakotahitanga wāhanga kua whakareihia ki te tine. He uaua te pehi i tēnei aratau kino hiato mā ngā hangarau paninga mata tuku iho, inā koa i roto i ngā taiao waikura-waku tino kino.
Te Pānga o te Parahanga ki te Mahi a te Pūrere GaN me te SiC
He nui te pānga o te poke ki te mahi me te hua o ngā taputapu GaN me SiC. Ahakoa ngā poke iti noa iho, ka taea e rātou te hanga hapa, ka arahi ki te kore mahi tika o te taputapu, te heke rānei o te whai huatanga. Mō ngā taputapu GaN, he maha ngā wā ka puta he raruraru i ngā poke motuhake:
- Ngā mahanga irahiko hōhonu (E2 me E4)Ka piki ake ēnei mahanga i muri i te whakamātao i te pūrotene me te irahiko. Ka puta he āhuatanga kuaha me te whakaroa i te rerenga wai, ka whai wāhi ki te hinga me te pirau o te iahiko i roto i ngā AlGaN/GaN HEMT.
- Ngā nekehangaKa whakatairangahia e ngā nekehanga tīwiri tuwhera-matua te turuturu o te kuaha i roto i ngā AlGaN/GaN HEMT. Ka pāngia ngā InAlN/GaN HEMT e ngā nekehanga kua whakapaipaihia e te Indium (In). Ka hono atu hoki ēnei ki ngā mahanga irahiko hohonu, te mahanga, te turuturu o te iahiko paepae-iti, me te hekenga whānui.
- Ngā wāhi takoto kau o te kariuma kua whakakotahitia ki te silicon (Si) me te hāora (O) rāneiKa mahi ēnei matatini hei mahanga poka nui i roto i te n-GaN me te n-AlGaN.
- Waro (C)He mahi anō hoki te waro hei mahanga nui mō ngā kōhao i roto i te n-GaN me te n-AlGaN.
- HauwaiKo tēnei poke papamuri, e kitea ana i roto i ngā rauemi MBE whai rawa i te MOCVD me te NH3, ka pā ki ngā nekehanga ngaohiko paepae me te whakahekenga transconductance i raro i te hihi proton.
- Ngā kaiwhiwhi hōhonuMā te whakaurunga o ngā kaiwhiwhi hōhonu ki te paparanga ārai ka whakamārama i ngā huringa o te ngaohiko paepae me te nekenekehanga o te hongere i roto i ngā transistors AlGaN/GaN.
- Ngā mahanga hohonu i roto i te paparanga arai GaNKa taea e ēnei mahanga te arahi ki ngā pānga rite ki ngā kaiwhiwhi hohonu. Ka whai wāhi atu rātou ki te whakahekenga wāhanga o te 2DEG me te marara irahiko 2DEG.
Te Āhua o te Whakatutukitanga a te TaC Coating i ngā Wero Hanga Nui
Te Āhua Matū Motuhake o te Paninga TaC
He tino pai te āhua o te paninga TaC. Nā tēnei āhuatanga i tino whai hua ai i roto i te hanga haurua-haurua. Ka ātete pai ki te pirau mai i ngā hau waikura pēnei i te hauota me te haurore. Ka mau tonu te iti o te tauhohenga o te paninga i roto i ngā taiao pāmahana teitei. Ka ārai tēnei i ngā tauhohenga matū kāore e hiahiatia me ngā hau tauhohenga. He mea nui tēnei āhuatanga hei whakarite i te parakore o te tukanga me te whakatakotoranga rauemi kounga teitei. He tino whai hua ki ngā tono e pā ana ki ngā Waka Wafer Silicon Carbide me ētahi atu wāhanga matua.
"Ki te whakaritea ki te paninga SiC, he nui ake te ātete matū o TaC me te ātete ki te waikura."
Ka ātete ngā paninga TaC ki te haukini wera. Ka ātete hoki ki ngā kohu hauwai, ngā kohu silicon, me ngā konganuku rewa. Ka whakaratohia e ēnei paninga he parenga ki te H2, NH3, SiH4, me te Si i roto i ngā taiao matū kino.
Te Pūmautanga Wera Teitei me te Pakari Ā-Mīhini o te Paninga TaC
He mea nui te pumau wera me te pakeke ā-pūkaha mō ngā wāhanga i roto i te hanga GaN me te SiC. He pai ake te ātete ki te waikura matū i te karāpeti tahanga, i te karāpeti pania ki te SiC rānei. Ka noho pumau tonu i ngā pāmahana teitei, tae atu ki te 2600°C. Kāore e tauhohe ki ngā huānga whakarewa maha. Nā tēnei ka waiho hei paninga pai mō te tipu tioata kotahi haurua-whakatipuranga tuatoru me te whakairo papatahi. He tino whai hua mō ngā taputapu MOCVD i roto i te tipu tioata kotahi GaN, AlN rānei, me ngā taputapu PVT i roto i te tipu tioata kotahi SiC. Ka tino whakarei ake tēnei i te kounga tioata.
Ka taea te whakamahi pumau i ngā paninga Tantalum Carbide (TaC) i ngā pāmahana teitei tae atu ki te 2600°C. Kāore e tauhohe ki te maha o ngā huānga whakarewa. E kiia ana he pai rawa atu tēnei paninga mō te tipu tioata kotahi haurua-whakatipuranga tuatoru me te whakairo wafer. Ina koa, he painga ki te tipu taputapu MOCVD o ngā tioata kotahi GaN, AlN rānei me te tipu taputapu PVT o ngā tioata kotahi SiC.
Ko te pakeke ā-pūkaha o tēnei rauemi he mea nui anō hoki ki tōna pakari. Ko tōna pakeke Vickers he tata ki te 1,880 HV.
| Momo Paninga | Te Pakari o Vickers (HV) |
|---|---|
| Tantalum carbide (TaC) | 1600 ki te 1800 |
| Kāpira titanium (TiC) | 3200 |
| Pūmua kāpira (B4C) | 3400 ki te 3700 |
| Momo Paninga | Te pakeketanga (GPa) |
|---|---|
| ta-C (Si 1.25 at.%) | 41 |
| ta-C (Si 3.85 at.%) | 33 |
| ta-C (Si 6.04 at.%) | 23 |
| SiC | 27 |
Te Parakore Tino-Teitei me te Whakaputa Matūriki Iti me te Paninga TaC
Ko te pupuri i te parakore tino teitei me te whakaiti i te whakaputanga matūriki he mea tino nui i roto i te hanga semiconductor. Ko ngā kaikawe CVD kua pania ki te TaC e mōhiotia ana mō ō rātou tere whakaputa matūriki tino iti. Ko ō rātou āhuatanga mata maeneene ka tino whakaiti i te kaha o te poke o te matūriki. Mā tēnei, ka āwhina ki te whakapai ake i te parakore me te hua i roto i ngā tukanga tipu epitaxial.
Te Whakarei Ake i te Tukanga me te Hua mePaninga TaC
Ka whakarei ake te paninga TaC i te auau o te tukanga i roto i te hanga taputapu GaN me SiC. Mā te roa o te paninga me te ātete ki ngā taiao tukatuka uaua ka mau tonu te āhua me ngā āhuatanga o te mata o ngā wāhanga tauhohenga mō ngā wā mahi roa. He mea nui tēnei ōritetanga mō te whakatutuki i te whakatakotoranga kiriata ōrite, ngā kōtaha tāpiri tika, me ngā āhuatanga wera pumau puta noa i ngā oma whakaputa maha. Ina pumau tonu ngā mata o ngā taputapu, ā, kāore he pirau, ka taea e ngā kaihanga te whakaputa anō i ngā tawhā tukanga e hiahiatia ana. Mā tēnei matapae ka whakaitihia ngā rerekētanga o ngā āhuatanga o te taputapu mai i te wafer ki te wafer me te puranga ki te puranga.
Mā tēnei whakapainga o te auautanga ka hua ake ngā hua hangahanga. Ka whakaitihia e te taiao tukanga pumau te maha o ngā hapa i puta mai i te pirau rauemi, te poke, ngā āhuatanga tukatuka koretake rānei. Hei tauira, ko te koretake o te matū o te paninga TaC ka ārai i ngā tauhohenga kāore e hiahiatia i waenga i ngā hau tukanga me ngā pakitara tauhohenga, ka taea ai te whakauru i ngā poke, te whakarerekē rānei i ngā nekehanga rere hau. Ko tōna pumau wera teitei ka whakarite kia kore ngā wāhanga e piko, e memeha rānei i raro i ngā pāmahana tino nui, me te pupuri i ngā āhuahanga tika e tika ana mō te tipu ōrite. Hei tāpiri, ko te tino parakore me te iti o te whakaputanga matūriki e pā ana ki te paninga TaC ka tino whakaitihia te poke matūriki, he take nui o ngā rahunga taputapu. Mā te whakaiti i ēnei pūtake noa o te rerekētanga me ngā hapa, ka hangaia e ngā kaihanga he maha ake o ngā taputapu GaN me SiC mahi mō ia wafer, ka arotau i te pai o te whakaputanga whānui me te whakaiti i te para.
Ngā Whakamahinga Matua o te Paninga TaC i roto i te Hanganga GaN me te SiC
Paninga TaC mō ngā Wāhanga Tauhohenga
He mea nui te paninga TaC ki te tiaki i ngā wāhanga tauhohenga rerekē i roto i te hanga GaN me te SiC. Ko ngā wāhanga motuhake e whai hua ana mai i tēnei paninga matatau ko ngā kaikawe wafer, ngā werohanga, ngā whakapūmau, me ngā whakamahana. I roto i ngā tauhohenga SiC CVD, ka whakaatuhia e ngā wāhanga nui kua pania ki te Tantalum Carbide he whakapainga nui ki te mahi. Ka kitea tēnei paninga mō tōna pakeke nui me tōna kawe hiko whakarewa. Ka tukuna he ātete tino pai ki te waikura halogen me te hauwai, he mea tino pai mō ngā taiao plasma kino me te pāmahana teitei.
Ka whakaratohia hoki e te paninga he kawe wera teitei, ka whakamararatia te wera me te ārai i te wera nui i te wā o ngā tukanga pāmahana teitei. Ka tiakina e ia ngā wāhanga oumu me te tauhohenga nui i ngā pāmahana tae atu ki te 2200°C, ka pupuri i te pumau matū me te pumau ā-mīhini. He kaha te ātete waikura o te tantalum carbide ki te nuinga o ngā waikawa me ngā kawakore, ka ārai i te kino o te papa i roto i ngā taiao waikura. Ka ātete ki te hauwai, te haukini, te monosilane, me te silicon, ka whakarato i te tiaki i roto i ngā tautuhinga matū kino. Mā tēnei tiakitanga whakarei ake ka roa ake te roa o te oranga o te wāhanga. He tino parakore te paninga TaC, me ngā taumata poke i raro iho i te 5 ppm. Ka whakaitihia e tēnei ngā hapa pēnei i ngā micropores me ngā poka keri i roto i ngā tioata SiC, ka whakapai ake i te kounga tioata.
Te paninga TaC mō ngā rūma whakairo me ngā taputapu tukatuka plasma
He mea nui anō hoki te paninga TaC mō ngā rūma whakairo me ngā taputapu tukatuka parāuma. Ko tōna pakari me tōna koretake matū he ātete ki te pakaru me te waikura mai i ngā taiao parāuma whakakoi me ngā tauhohenga matū kino. Mā tēnei ka noho tonu ngā wāhanga ki te mahi i raro i ngā āhuatanga tino kino. Ko te tino parakore o te paninga, me ngā taumata poke i raro i te 5 ppm, ka whakaiti i ngā tūponotanga poke i roto i ngā tukanga tipu tioata.
Mā te piri kaha me te iti o te horapa wera ka ārai i te pakaru, i te wehewehe rānei i te wā e huri ana te wera. He mea nui tēnei hei pupuri i te tika me te ōritetanga i roto i te hanganga haurua-ira. I roto i te tipu epitaxial GaN/SiC, ka ārai te paninga i ngā tauhohenga hau me te whakaiti i ngā hapa, ka whakapai ake i te hua whānui. Mā ngā rauemi parakore teitei me te paninga TaC pakari ka whakaiti i te whakaputanga matūriki me te hau. Ka whakaitihia tēnei i te mōrearea o te poke o te wafer me ngā hapa. Ka whakarato te paninga pakari i te ātete pai ki te horo o te plasma me te whakaeke matū, ka roa ake te ora mahi o ngā wāhanga.
Ehara i te mea he painga anake te paninga TaC; he mea nui hoki mō te āheinga o te whakaputa pono, te mahi teitei, me te utu-whai hua o ngā taputapu GaN me SiC. Ka whakaitihia e ia ngā wero poke me te pirau e pā ana ki ā rātou tukanga hanga. Ka tipu haere tonu tōna tūranga i te whanaketanga tonu o ēnei hangarau matatau. Mā tēnei ka whakarite kia mau tonu te auahatanga me te whānui haere o te mākete.
Ngā Pātai Auau
He aha te paninga TaC?
Ko te paninga TaC he paparanga tiaki o te Tantalum Carbide e pania ana ki ngā wāhanga karāpeti. Ka whakamahia e ngā kaihanga he tukanga Whakatakotoranga Vapor Chemical (CVD). Ka whakarei ake tēnei matū uku mārō, ātete-waikura i te pumau me te ātete matū mō ngā tono haurua-ira.
Me pēhea te whakapai ake a te paninga TaC i te hua o te hanga?
Mā te paninga TaC ka whakarite kia rite tonu ngā āhuatanga tukanga. Ka ārai i te pirau me te poke o ngā rauemi. Mā tēnei pumau ka whakaitihia ngā hapa me ngā rerekētanga o ngā āhuatanga o te taputapu. Ka tutuki i ngā kaihanga te maha ake o ngā taputapu GaN me SiC mahi mō ia wafer.
He aha i pai ake ai te paninga TaC i te paninga SiC i ētahi whakamahinga?
He pai ake te ātete matū me te ātete waikura o te paninga TaC ki te paninga SiC. Ka ātete ki ngā taiao matū kaha me ngā pāmahana teitei ake. Nā tēnei ka pai ake mō ngā tukanga uaua motuhake i roto i te hanga GaN me te SiC.
He aha ngā wāhanga motuhake e whai hua ana mai i te paninga TaC i roto i te hanga GaN/SiC?
He nui ngā painga o ngā wāhanga tauhohenga pēnei i ngā kaikawe wafer, ngā werohanga, ngā whakapūmau, me ngā whakamahana. Ka whakamahia hoki e ngā rūma keri me ngā taputapu tukatuka plasma te paninga TaC. Ka tiakina ēnei wāhanga mai i ngā hau waikura, ngā pāmahana teitei, me te plasma whakakoi.
Tangohia te taahiraa e whai ake nei
Kua rite koe ki te kawe mai i te pumau me te hua onge ki ō tukanga GaN me SiC?
Whakapā mai ki ā mātou tohunga pūtaiao rauemi i tēnei rāki te matapaki me pēhea te hurihanga o te mahi a tō tauhohenga MOCVD, CVD rānei e te otinga paninga TaC.
Wā tuku: Whiringa-ā-rangi 14-2025