Izixazululo Zokuhlanganisa Amakhemikhali Ezomile Nezimanzi Zokulungiselela Ubuso Bendawo Ye-Topcon Solar Cell Processing

• Intuthuko yakamuva kukhemikhali emanzi ehlobene ne-PERC ne-HJT nayo ingafakwa ukuze kuthuthukiswe i-TOPCon
• I-BSG kanye namathuluzi okukhipha i-single side emitter adinga i-TOPCon izinguquko ezithile phakathi kwamabhentshi amanzi
• Ubuchwepheshe bokufaka okomile kwe-atmospheric kusuka ku-Nines photovoltaics kufanelana kahle nezidingo zokususa ukugoqa kumaseli we-TOPCon

Ngenkathi umnyombo we I-TOPCon ilele ekubekweni kwe-tunneling oxide kanye nongqimba lwe-polysilicon, ukukhiqiza lawa maseli, afana ne-PERC, kudinga izinyathelo ezimbalwa zokucubungula okufanele zishiwo, kodwa ezingabucayi. Ezinye zezinqubo eziyingxenye yokugeleza kwenqubo ye-PERC ziyalungiswa noma zenziwe kahle, kuyilapho kudingeka izinyathelo ezintsha sezizonke. Njenganoma ibuphi obunye ubuchwepheshe beselula, i-TOPCon nayo iqala ngokulungiswa kwendawo, okudinga ukwenziwa ngcono okuthile.

Ukwelashwa ngamakhemikhali amanzi: Nakuba kungahlosiwe ngempela ku-TOPCon kuphela, ukuthuthukiswa okubalulekile okwenzeka endaweni yebhentshi elimanzi kungazuza nakanjani ekuthuthukisweni okwenziwe kwezinye izakhiwo zamaseli. Nakuba amathuluzi amabili okukhiqiza adinga ukulungiswa kunqubo ye-TOPCon - i-BSG namathuluzi okukhipha i-emitter ohlangothini olulodwa -, ukuthuthukiswa nezinye izinyathelo zokwelapha ngamakhemikhali amanzi nakho kubalulekile ohlelweni olukhulu lwezinto. I-RENA ibithuthukisa izinkundla zayo zamathuluzi kumathuluzi enqwaba asetshenziselwa ukushumeka kokulimala kwesaha nokuthumela imiyalezo. Ethula ku-TaiyangNews High Efficiency Conference, u-Kuhnlein we-RENA uthe intuthuko yakamuva kakhulu ehlotshaniswa nalawa mathuluzi enqwaba ikhono lokwamukela amawafa amakhulu kanye nokucubungula abathwali ngokulayisha okuphezulu. Ngekhwalithi ye-wafer ethuthukisiwe ngokujwayelekile kanye nentuthuko emkhakheni wezithasiselo, kunethuba lokuqeda isinyathelo sokususa umonakalo wamasaha kusukela ekulandeleni kwe-PERC ngokuphelele, okungase futhi kuzuze i-TOPCon, ngokusho kuka-Kuehnlein.

Okunye ukuthuthukiswa kwe-PERC okungasiza futhi i-TOPCon usayizi wephiramidi olungiselelwe kanye nokubonakala. Isimo samanje sobuciko siwusayizi wephiramidi ongu-1 kuye ku-3 µm kanye nokubonakala okungu-9.9 kuya ku-10.1% nge-monoTEXH2.3. Yize kunezindlela ezingehlisa usayizi wephiramidi ukusuka ku-0.5 kuye ku-3 µm kanye nokubonakala okuhambisanayo kuka-8.9 kuya ku-10%, lokhu kwakamuva kufinyelelwa kuphela ngenani elilinganiselwe lokugijima okungaba ngu-20. I-RENA isebenza ngenqubo ezinzile engathatha imigijimo engaphezu kuka-200, ithola usayizi wephiramidi ukuya kokusabalalisa okungaba ngu-0.5 womphumela. 2%.

I-RENA ifunde kokuhlangenwe nakho kwayo nge-HJT ukuthi ukuhlanza ngemva kokuthumela umbhalo kunamandla okuthuthukisa ukusebenza kahle - kufika ku-0.05% nge-PERC -, engasetshenziswa futhi ekucubunguleni kwe-TOPCon.

Ukuze kususwe okusongayo, i-RENA iphromotha inkundla yethuluzi lokubhala emgqeni ebizwa ngokuthi i-InPolySide. Phakathi nesinyathelo sokunamathisela ohlangothini olulodwa lwe-alkaline ukuze kuhlulwe i-poly, i-BSG ohlangothini lwe-emitter lweseli ivimbela ukukhishwa kwe-emitter futhi inqubo ihlangothi olulodwa ngqo, okusho ukuthi ingemuva lishiywa lingathinteki nhlobo. Ngemuva kwesinyathelo sokukhumula, ingilazi iyacishwa.

I-atmospheric dry etching: Njengenye indlela yezixazululo ze-wet-chemical ukususa i-wraparound, I-Nines Photovoltaics isekelwe ngaphandle kwe-Dublin, e-Ireland, iphromotha isisombululo esisha. Le nkampani isungule inqubo yobunikazi ebizwa nge-ADE, emele i-Atmospheric Dry Etching. Inkampani ibilokhu ithuthukisa inqubo ye-etching eyomile kusukela ngo-2010 njengokungena esikhundleni sezinqubo ezivame ukusetshenziswa zamakhemikhali amanzi asetshenziswa ekukhiqizeni amaseli e-PV. Okwenza lobu buchwepheshe buhluke ukuthi bufeza ukubhala okomile ngomfutho womoya, kuqede isidingo se-vacuum ne-plasma, okuyizithako eziyinhloko nezishayeli zezindleko kubuchwepheshe obujwayelekile bokufaka okomile, kugcizelela i-Nines Photovoltaics' CTO Laurent Clochard.

Indawo yokusabela ye-reactor ihlukaniswe kwezinye ngokusebenzisa amakhethini egesi. Inqubo yenziwa ngendlela esemgqeni. Ama-wafer afakwa emishinini kusetshenziswa isithwali se-wafer esishisayo. I-etching gas, okuyi-fluorine (F₂), icushwa ngokushisa ukuze ihlukanise ama-molecule. I-etchant ibe ihanjiswa kumawafa ngomshini wokusabalalisa oklanywe ngokukhethekile ukuze kudalwe ukujula kwe-etch okudingekile, ukuthungwa kanye nokufana. UClochard ucacisa ukuthi ubuchwepheshe abunawo umthelela omubi okhethekile emvelweni. Umcabango we-fluorine njenge-etching gas ngokwawo ukhala izinsimbi mayelana namagesi abamba ukushisa. Kodwa-ke, ngokungafani ne-SF evame ukusetshenziswa₆ namandla aphezulu okufudumala kwembulunga yonke etching okomile, i-fluorine yamangqamuzana esetshenziswa ngabakwaNines ayinakho ukufudumala kwembulunga yonke.

Ithuluzi, ngenkathi yethulwa ku-2017, yayiklanyelwe ngokuyinhloko ukuthumela umbhalo, ukucacisa, i-multicrystalline, lapho ukuzuza ekuboniseni i-ADE kuphakeme kakhulu kunalokho okungafinyelelwa ngesimo sezixazululo ze-wet-chemical solution. Kodwa-ke, njengoba imakethe ishintshela ku-monocrystalline, i-Nines Photovoltaics iphinde yaphendulela ukugxila kwayo ku-PERC evamile kanye nobunye ubuchwepheshe obuthuthukisiwe. Ngenkathi ubuchwepheshe busaqhubekisela phambili izinzuzo zabo ekuthumeleni umbhalo, i-ADE ithole uhlelo lokusebenza oluthandeka nakakhulu ekucutshungulweni kweseli ye-TOPCon. Njengoba kunikezwe uhlobo lwayo olulodwa lwenqubo, ingasetshenziswa ngokuphumelelayo ekususeni i-wraparound. “Yini enye?” kusho uClochard, "Ungakhetha ukuqoshwa kwendawo kanye/noma ukususwa konqenqema, njengoba ubuchwepheshe buyakhetha." Lokho kusho ukuthi inqubo ye-Nines Photovoltaics' ayifezi nje kuphela ukushumeka ngaphandle kokuphazamisa iphrofayili ye-emitter engaphansi, kodwa ingakhiwa futhi ukuze isuse i-polysilicon emaphethelweni ama-wafer, okunomthelela omkhulu kuma-shunts kanye nokulahlekelwa kwesivuno. Ithuluzi linohlelo lokusebenza noma ngabe izinqubo zokubeka zinohlangothi olulodwa.

I-Nines njengamanje isebenzisa ulayini wokuhlola endaweni yawo e-Dublin futhi ibambisene ne-Fraunhofer ISE ekuthuthukisweni kwenqubo yamaseli kuyilapho futhi ihlinzeke ngohlelo lwesikali se-R&D. Inkampani manje isilungile ngeplatifomu yesikali sokukhiqiza, ehlinzekwa ngezinhlobonhlobo ezi-2 - i-ADE-3000 ne-ADE-6000. Izinqubo zakamuva zifika kusayizi we-M4 emigwaqweni eyisithupha kanye ne-M6 ukuya ku-G12 emigwaqweni e-4. Ithuluzi linomphumela olinganiselwe wama-wafers ayi-12,000 kanye ne-8,000 ngehora, ngokulandelana, endaweni eyi-12 m.². Inombolo yemizila iyingxenye ncamashi ene-ADE-3000, kanjalo nokuphumayo. Lezi zibalo ze-output, nokho, ezenqubo yokuthumela umbhalo, okusho ukuthi umthamo wethuluzi uzoba phezulu kakhulu ekubhalweni kohlangothi olulodwa ku-TOPCon. "Inani le-silicon elidinga ukususwa izikhathi ezingaphansi kwe-10 kunalokho obungathanda ukuthumela imiyalezo," kuchaza uClochard. Inkampani futhi izimisele ukuhlinzeka ngohlelo lwesikali lwe-R&D ngomzila owodwa wezokuthutha. Mayelana nezindleko, uClochard uthi izindleko ziphansi kakhulu kunezinqubo zamakhemikhali amanzi futhi izinzuzo zibonakala kakhulu ekukhiqizweni kwesilinganiso esikhulu. Lokhu kwenziwa ukuthi igesi ebambayo ingakhiqizwa endaweni, ngokusho kukaClochard.

Umthombo ovela Izindaba ze-Taiyang