Ntchito zazikulu za silicon carbide boat support ndi quartz boat support ndizofanana. Thandizo la boti la silicon carbide lili ndi ntchito yabwino koma yokwera mtengo. Zimapanga ubale wina ndi thandizo la boti la quartz pazida zopangira batire zokhala ndi zovuta zogwirira ntchito (monga zida za LPCVD ndi zida za boron diffusion). M'zida zopangira batire zomwe zimakhala ndi ntchito wamba, chifukwa cha ubale wamitengo, silicon carbide ndi quartz boti thandizo amakhala magulu omwe akupikisana.
① Ubale wolowa m'malo mu LPCVD ndi zida zoyatsira boron
Zipangizo za LPCVD zimagwiritsidwa ntchito popanga ma batire cell tunneling oxidation ndi njira yokonzekera yosanjikiza ya polysilicon. Mfundo yogwirira ntchito:
Pansi otsika-anzanu mlengalenga, kuphatikizapo kutentha koyenera, zochita mankhwala ndi mafunsidwe filimu mapangidwe zimatheka kukonzekera kopitilira muyeso tunneling okusayidi wosanjikiza ndi polysilicon filimu. Mu tunneling oxidation ndi doped polysilicon layer yokonzekera, chithandizo cha bwato chimakhala ndi kutentha kwakukulu kogwira ntchito ndipo filimu ya silicon imayikidwa pamwamba. Thermal expansion coefficient of quartz ndi yosiyana kwambiri ndi ya silicon. Mukagwiritsidwa ntchito pamwambapa, ndikofunikira kuthira mafuta nthawi zonse kuti muchotse silicon yomwe idayikidwa pamwamba kuti chiwongolero cha bwato la quartz chisasweke chifukwa chakukula kwamafuta ndi kutsika chifukwa cha kuchuluka kwamafuta komwe kumapangidwa ndi silicon. Chifukwa cha pickling pafupipafupi komanso kutsika kwamphamvu kwa kutentha kwambiri, chotengera bwato la quartz chimakhala ndi moyo waufupi ndipo nthawi zambiri chimasinthidwa mumsewu wa oxidation ndi njira yokonzekera yosanjikiza ya polysilicon, yomwe imakulitsa kwambiri mtengo wopangira batire. Kukula kokwanira kwa silicon carbide kuli pafupi ndi silicon. Munjira yokonzekera makutidwe ndi okosijeni ndi doped polysilicon wosanjikiza, chotengera chophatikizira cha silicon carbide sichifunika kunyamula, chimakhala ndi mphamvu zotentha kwambiri komanso moyo wautali wautumiki, ndipo ndi njira yabwino yosinthira bwato la quartz.
Zida zowonjezera za Boron zimagwiritsidwa ntchito kwambiri popanga zinthu za doping boron pagawo la N-mtundu wa silicon wafer gawo lapansi la cell ya batri kukonzekera emitter yamtundu wa P kuti ipange mphambano ya PN. Mfundo yogwirira ntchito ndikuzindikira momwe zinthu zimachitikira komanso mapangidwe a filimu ya ma molekyulu m'malo otentha kwambiri. Filimuyo ikapangidwa, imatha kufalikira ndi kutentha kwambiri kuti izindikire ntchito ya doping ya silicon wafer pamwamba. Chifukwa cha kutentha kwakukulu kogwira ntchito kwa zida zowonjezera za boron, chogwiritsira ntchito bwato la quartz chimakhala ndi mphamvu zochepa zotentha kwambiri komanso moyo waufupi wautumiki mu zipangizo zowonjezera boron. Chogwirizira chophatikizika cha silicon carbide boat chili ndi mphamvu zotentha kwambiri ndipo ndi njira yabwino kwa chosungira bwato la quartz pakukulitsa kwa boron.
② Chiyanjano cholowa m'malo mwa zida zina
Zothandizira mabwato a SiC zimakhala ndi mphamvu zolimba zopangira komanso magwiridwe antchito abwino kwambiri. Mitengo yawo nthawi zambiri imakhala yokwera kuposa ya mabwato a quartz. Pazonse zogwirira ntchito pazida zopangira ma cell, kusiyana kwa moyo wautumiki pakati pa zothandizira mabwato a SiC ndi zothandizira mabwato a quartz ndizochepa. Makasitomala otsika makamaka amafanizira ndikusankha pakati pa mtengo ndi magwiridwe antchito potengera njira zawo ndi zosowa zawo. Zothandizira mabwato a SiC ndi zothandizira mabwato a quartz zakhala zokhazikika komanso zopikisana. Komabe, phindu lalikulu la zothandizira za boti la SiC ndizokwera kwambiri pakadali pano. Ndi kuchepa kwa mtengo wopangira ma boti a SiC othandizira, ngati mtengo wogulitsa wa SiC boti umathandizira kutsika mwachangu, zidzabweretsanso mpikisano wokulirapo pazothandizira mabwato a quartz.
(2) Chiŵerengero cha kagwiritsidwe ntchito
Njira yaukadaulo yama cell ndiukadaulo wa PERC ndiukadaulo wa TOPCon. Gawo lamsika laukadaulo wa PERC ndi 88%, ndipo gawo la msika laukadaulo wa TOPCon ndi 8.3%. Msika wophatikizana wa awiriwa ndi 96.30%.
Monga momwe chithunzi chili pansipa:
Muukadaulo wa PERC, zothandizira zamabwato zimafunikira pakufalikira kwa phosphorous kutsogolo ndi njira zowotchera. Muukadaulo wa TOPCon, zothandizira zamabwato zimafunikira pakufalikira kwa boron kutsogolo, LPCVD, kufalikira kwa phosphorous kumbuyo ndi njira zolumikizira. Pakalipano, zothandizira za silicon carbide boat zimagwiritsidwa ntchito makamaka mu ndondomeko ya LPCVD ya teknoloji ya TOPCon, ndipo kugwiritsa ntchito kwawo mu njira ya kufalikira kwa boron kwatsimikiziridwa makamaka.
Chithunzi Ntchito ya boti imathandizira pakukonza ma cell:
Zindikirani: Pambuyo pakuphimba kutsogolo ndi kumbuyo kwa matekinoloje a PERC ndi TOPCon, palinso masitepe monga kusindikiza pazithunzi, sintering ndi kuyesa ndi kusanja, zomwe sizimaphatikizapo kugwiritsa ntchito zothandizira bwato ndipo sizinalembedwe pazithunzi pamwambapa.
(3) Chitukuko chamtsogolo
M'tsogolomu, motsogozedwa ndi zabwino zonse zamaboti a silicon carbide, kukulitsa kwamakasitomala ndikuchepetsa mtengo komanso kuwongolera bwino kwamakampani opanga ma photovoltaic, gawo lamsika lazothandizira za silicon carbide boat likuyembekezeka kukulirakulira.
① M'malo ogwirira ntchito a LPCVD ndi zida zoyatsira boron, magwiridwe antchito a ma silicon carbide boat ndi abwino kuposa a quartz ndipo amakhala ndi moyo wautali.
② Kukula kwamakasitomala kwa opanga ma boti a silicon carbide omwe akuimiridwa ndi kampaniyo ndikosavuta. Makasitomala ambiri pamakampani monga North Huachuang, Songyu Technology ndi Qihao New Energy ayamba kugwiritsa ntchito zida za silicon carbide boat.
③ Kuchepetsa mtengo ndi kukonza bwino kwakhala kutsata makampani opanga ma photovoltaic. Kupulumutsa ndalama kudzera m'maselo akuluakulu a batri ndi chimodzi mwa zizindikiro zochepetsera mtengo komanso kukonza bwino pamakampani a photovoltaic. Ndi kachitidwe ka ma cell akuluakulu a batri, zabwino zamaboti a silicon carbide zothandizira chifukwa chakuchita bwino kwawo zimawonekera kwambiri.
Nthawi yotumiza: Nov-04-2024