Mu gawo lomwe likusintha mofulumira la ukadaulo wa photovoltaic, HJT (Heterojunction) ndi TOPCon (Tunnel Oxide Passivated Contact) zakhala zinthu zofunika kwambiri pamakampaniwa. Komabe, poyambitsa zipangizo za perovskite, HJT pamodzi ndi perovskite ikuyamba kutchuka chifukwa cha ubwino wake wapadera, ndipo ikukhala nkhani yofunika kwambiri mumakampani opanga mphamvu ya dzuwa. Nkhaniyi ikufotokoza za ubwino wa HJT pamodzi ndi perovskite kuposa TOPCon ndi momwe kuphatikiza kumeneku kukupangira tsogolo la ukadaulo wa photovoltaic.
1. Chiyambi cha Ukadaulo wa HJT
HJT imadziwika ndi mphamvu zake zosinthira kuwala kwa dzuwa komanso magwiridwe antchito abwino kwambiri m'malo opanda kuwala kwenikweni. Imapanga mgwirizano wapakati mwa kuyika filimu yopyapyala ya silicon pa kristalo ya silicon, kuchepetsa kuyanjana kwa pamwamba ndikuwonjezera mphamvu yamagetsi yotseguka komanso mphamvu yamagetsi yochepa.
2. Mavuto ndi TOPCon Technology
TOPCon imakwaniritsa kusuntha kwa pamwamba mwa kugwiritsa ntchito gawo la oxide ndi gawo la polycrystalline silicon pamwamba pa selo, zomwe zimachepetsa kutayika kwa recombination. Komabe, kuchita bwino kwambiri ndi TOPCon kumakumana ndi zovuta, kuphatikizapo njira zovuta, kasamalidwe ka ndalama, komanso zovuta zowonjezera magwiridwe antchito.
3. Udindo wa Zipangizo za Perovskite
Zipangizo za Perovskite ndi zabwino kwambiri popititsa patsogolo mphamvu ya maselo a dzuwa chifukwa cha kuchuluka kwa kuyamwa kwa zinthu, kusiyana kwa band komwe kungasinthidwe, komanso momwe zinthu zimagwiritsidwira ntchito. Mwa kuphatikiza perovskite ndi ukadaulo wa HJT, ndizotheka kugwiritsa ntchito mphamvu ya HJT ndikuyikulitsa kudzera mu mphamvu ya perovskite yoyamwa zinthu zambiri.
4. Ubwino wa HJT Yophatikizidwa ndi Perovskite
a. Kugwira Ntchito Mwapamwamba Kwambiri Posintha Ma Photoelectric:Kuwonjezeredwa kwa perovskite kumakulitsa kwambiri momwe maselo a HJT amayankhira, ndikuwonjezera chiwerengero cha maselo opangidwa ndi zithunzi. Maselo a HJT, omwe ali ndi malire a luso la 27.5%, aposa kale ukadaulo wachikhalidwe wa PV. Kapangidwe ka heterojunction, kosinthasintha magawo a silicon osasinthika ndi a crystalline, kumawonjezera kuyamwa kwa kuwala, ndikuwonjezera mphamvu yosinthira mphamvu.
b. Kukhazikika Bwino:Maselo a HJT samangopereka mphamvu zambiri komanso kukhazikika kwapamwamba. Kapangidwe ka HJT-perovskite tandem kamakhala ndi mphamvu zambiri pakagwiritsidwa ntchito kwa nthawi yayitali, mosiyana ndi TOPCon-perovskite, yomwe, ngakhale kuti ndalama zochepa zopangira, imavutika kufanana ndi HJT pankhani ya mphamvu.
c. Njira Yosavuta Yopangira Zinthu:Kapangidwe ka zinthu za perovskite komwe kamakonzedwa bwino kumachepetsa ndalama zopangira, zomwe ndizofunikira kwambiri pochepetsa mtengo wofanana wamagetsi (LCOE). Ma cell a HJT alinso ndi mwayi wopanga, pogwiritsa ntchito low-temperature chemical vapor deposition (CVD) kuti aike zigawo za silicon zosasinthika, kutsatiridwa ndi transparent conductive oxide (TCO) ndi zigawo za silicon zosasinthika za p-type kapena n. Njira yosavuta iyi imachepetsa ndalama ndikukweza kuchuluka kwa zokolola poyerekeza ndi njira ya TOPCon yopangira kutentha kwambiri, yomwe imawonjezera ndalama zopangira komanso kusinthasintha kwa khalidwe.
d. Kupanga Kopanda Chilengedwe:Zipangizo za Perovskite zimapereka njira yopangira zinthu zosawononga chilengedwe chifukwa sizimaphatikizapo zinthu zoopsa kapena zosowa. Mosiyana ndi zinthu zina za PV zomwe zimafuna zinthu zoopsa monga lead kapena cadmium, ma perovskite alibe poizoni wotere, zomwe zimachepetsa zoopsa zachilengedwe ndi thanzi. Kuphatikiza apo, ma perovskite sadalira zinthu zosowa, zomwe kutulutsa kwawo kungawononge chilengedwe. Kupanga kwawo kumagwiritsa ntchito mphamvu zochepa, zomwe zimapangitsa kuti mpweya woipa wa kaboni uchepe.
Pomaliza, kuphatikiza kwa HJT ndi perovskite kukuwonetsa njira yabwino kwambiri yopititsira patsogolo mphamvu ya photovoltaic mtsogolo, ndi ubwino wake mu kugwira ntchito bwino, kukhazikika, kugwiritsa ntchito bwino ndalama, komanso kukhazikika kwa chilengedwe kuposa TOPCon m'mbali zambiri.
