Bateri ya TOPCon isobanura iki?
Izina ryuzuye rya TOPCon ni Tunnel Oxide Passivating Contacts, bisobanurwa ko Tunneling Oxide Passivated Contacts, ikoranabuhanga rya seli ya silikoni ya wafer yo mu bwoko bwa N ryatanzwe mu 2013. Uturemangingo twa TOPCon, ni ukuvuga uturemangingo tw’izuba twa Tunneling Oxide Passivated Contacts, twagenewe kunoza imikorere y’uturemangingo tw’izuba binyuze mu gukemura ikibazo cyo kudakoresha neza uturemangingo mu turemangingo.
Ubuso bw'imbere bw'uturemangingo twa TOPCon n'imiterere isanzwe y'uturemangingo tw'izuba two mu bwoko bwa N ni bimwe, itandukaniro rikomeye riri inyuma y'uturemangingo kugira ngo hategurwe urwego rwa silicon oxide yoroshye cyane, hanyuma urwego rworoshye rw'ifatizo rya silicon, byombi hamwe bigakora imiterere y'ifatizo idakora, bigagabanya neza ifatizo ry'ubuso n'ifatizo ry'icyuma.
Bitewe n’ingaruka nziza zo gusimbuka kw’ingufu za silicon oxide nto cyane hamwe na filime ya silicon ifite dope nyinshi bituma imigozi y’ingufu zo hejuru za silicon wafer ikora ipfundo, bityo igakora ingaruka zo gusimbuka kw’ingufu, amahirwe yo gusimbuka kw’amashanyarazi yariyongereye cyane, ubushobozi bwo guhangana n’ibintu bugabanuka, kandi amaherezo binongera ubushobozi bwo guhindura ibintu.
Kuki TOPCon isimbura ikoranabuhanga rya PERC?
Mu 2023, inganda za PV zabonye iterambere rikomeye, hongewemo ubushobozi bushya bwo gukora TOPCon burenga 400GW. Biteganijwe ko ikoranabuhanga rya TOPCon cells rizarenga PERC isanzwe, rikaba ikoranabuhanga rishya risanzwe mu 2024. Mu bijyanye n'umusaruro, biteganijwe ko umusaruro wa TOPCon uzagera kuri 100GW uyu mwaka, bingana na 20%-30% by'umusaruro wose wa TOPCon cells. Nk'inzira ihendutse cyane ya N-type cells, TOPCon cells zifatwa nk'izifite ubushobozi bwo gukora bwiza kandi bucye, kandi imiterere y'umusaruro irenze isabwa izakomeza umwaka wose. Hamwe no kunoza imikorere ya bateri za TOPCon, umwanya wa bateri za TOPCon zo mu bwoko bwa N-type TOPCon witezweho kwiyongera, bizagira ingaruka nziza ku iterambere ry'ubucuruzi bw'ibigo bireba.
Bateri yo mu bwoko bwa N ntabwo irasobanukirwa ko ikibazo cy'ingenzi cyo kwagura umusaruro mu buryo bunini ari uko imikorere yayo na bateri zo mu bwoko bwa P bitarafungura icyuho kinini hagati y'igiciro kitari silicon kiri hejuru ya 30% -40% ugereranyije na bateri ya PERC. Imikorere myiza ya bateri ya PERC yari hafi y'igisenge, umwanya wo kugabanya ikiguzi cy'umwanya waragabanutse, ariko imikorere myiza ya bateri ya TOPCon yo kunoza iracyafite ubushobozi bwinshi. Dukurikije amakuru ya PV Infolink, igiciro kitari silicon cy'uturemangingo twa TOPCon kiri hafi ya $0.3 kuri watt, ugereranije n'igiciro cy'uturemangingo tunini twa PERC kiri hagati ya $0.21-0.23 kuri watt, kandi haracyari icyuho. Ariko, hamwe n'imbaraga zihoraho, ikiguzi cyo gukora uturemangingo twa TOPCon kizajya cyegereza urwego rwa selile za PERC buhoro buhoro.
Ni izihe nyungu za batiri ya TOPCon?
1. Akamaro ko gusimbuka: imikorere yo gusimbuka hejuru ishingiye ahanini ku gusimbuka kw'ibinyabutabire n'ugusimbuka kw'ubutaka, ukwiyongera k'ubushyuhe bwa SiO2 bufite ubushobozi bwiza bwo gusimbuka kw'ibinyabutabire. Gukoresha cyane polysilicone bishobora gutuma ingufu za silikoni zigongana, bigatuma ubwinshi bw'ibinyabutabire biterana ndetse n'ibinyabutabire bike bigabanuka ku murongo, bigabanura ibigize urusobe rw'ibinyabutabire kandi bikagira uruhare rwo gusimbuka kw'ubutaka.
2. Akamaro ku byuma bihuza ibyuma: ibyuma bihuza ibyuma biba inzitizi ku mikorere isanzwe y’ingirabuzimafatizo z’izuba. Ubusanzwe ibyuma bihuza ibyuma bikoreshwa mu gucapa mu buryo bwa ecran nyuma yo gushyushya cyane, ibyuma bihuza ikoranabuhanga mu buryo bwa "spring" (ubushyuhe bwinshi), ibyuma bihuza ibyuma bikoresha "spring" kugira ngo bikore "spring", bigasenya imiterere y’ibyuma, bigatuma icyuma gihuza J0c kiri hejuru mu gice gihuza ibyuma kurusha mu gice gihuza ibyuma. Ariko p + poly na n + poly metal, nubwo "spring" yangiza imiterere y’icyuma gihuza ibyuma, bishobora gutuma icyuma gihuza ibyuma kiri hasi cyane ugereranyije n’aho gihurira n’icyuma gisanzwe / inyuma.
3. Akamaro ko kugabanya imbaraga mu gukorana n'icyuma: uretse gukorana n'icyuma, gukorana n'icyuma gikoresha imirasire y'izuba (ρc) nabyo ni ingenzi ku mikorere y'ibikoresho bya silikoni y'izuba, metal-semiconductor kugira ngo bikore gukorana neza kwa ohmic kugira ngo bifashe kugabanya igihombo cyo kugabanya imbaraga no kunoza ubushobozi bwo kuzuza.
