Ulwazi

Iyini iseli yelanga ye-HJT?

Sekuyiminyaka eminingi ubuchwepheshe be-heterojunction (HJT) bunganakwa, kodwa buye bazuza amandla eminyakeni yamuva, okubonisa amandla abo angempela. Amamojula avamile we-photovoltaic (PV) abhekana neminye yemikhawulo evame kakhulu yamamojula avamile we-photovoltaic (HJT), njengokunciphisa ukuhlanganisa kabusha nokuthuthukisa ukusebenza ezindaweni ezishisayo.

Lesi sihloko ngeyakho uma ufuna ukufunda okwengeziwe ngobuchwepheshe be-HJT.

I-HJT Solar Cell Isekelwe ku-N-uhlobo lweSilicon Wafer 

Njengobuchwepheshe beselula obuvuthiwe, ubuchwepheshe be-heterojunction bufakazelwe ukuthi buletha ukusebenza kahle okuphezulu, ukusebenza okungcono, nokuqina. 

Inqubo yokukhiqiza ye-HJT Cell isebenza kahle kakhulu futhi ithatha isinyathelo esincane uma iqhathaniswa nobunye ubuchwepheshe bokucubungula amaseli.

I-HJT solar cell nayo iyingqamuzana yemvelo ye-bifacial, enombala wamaseli elanga ozinzile kangcono kakhulu.

Isho ukuthini i-HJT Solar Cell?

I-HJT amaseli elanga e-Hetero-Junction. Kusukela ngesikhathi sokubhala, i-HJT iyi-a ozongena esikhundleni seseli yelanga ye-PERC edumile nobunye ubuchwepheshe obufana ne-PERT ne-TOPCON. ISanyo yaqala ukuyethula ngeminyaka yawo-1980 kwathi ngokuhamba kwesikhathi yathengwa yiPanasonic ngeminyaka yawo-2010.

Lo mklamo ungenza ukusebenzisa imigqa ekhona yokukhiqiza amaseli elanga asebenzisa ubuchwepheshe be-PERC kube lula ngoba i-HJT inenani elincane kakhulu lezigaba zokucubungula amaseli kanye nezinga lokushisa eliphansi kakhulu lokucubungula amaseli kune-PERC.

Umfanekiso 1: PERC p-type vs. HJT n-type solar cell.

Umfanekiso 1 ubonisa ukuthi i-HJT ihluke kanjani kusakhiwo esivamile se-PERC. Ngenxa yalokho, izindlela zokukhiqiza zalezi zihloko ezimbili ze-topology ziyahlukahluka kakhulu. Ngokungafani ne-n-PERT noma i-TOPCON, engashintshwa emigqeni ekhona ye-PERC, i-HJT idinga imali eningi ukuze ithenge amathuluzi amasha ngaphambi kokuba iqale ukwenza imali eningi.

Ngaphezu kwalokho, njengobuchwepheshe obuningi obusha, ukusebenza kwesikhathi eside kwe-HJT kanye nokuzinza kokukhiqiza kuyaphenywa. Lokhu kungenxa yezinkinga zokucubungula, okuhlanganisa ukuzwela kwe-amorphous Si ezinkambisweni zezinga lokushisa eliphezulu.

Isebenza kanjani i-HJT?

Ngaphansi komphumela we-photovoltaic, amaphaneli elanga e-heterojunction asebenza ngendlela efanayo namamojula avamile we-PV, ngaphandle kokuthi lobu buchwepheshe busebenzisa izendlalelo ezintathu zezinto zokudonsa, ezihlanganisa ifilimu encane kanye nobuchwepheshe obujwayelekile be-photovoltaic. Kulesi sibonelo, sizoxhuma umthwalo kumojula, futhi imojula iguqule amaphothoni abe ugesi. Lo gesi ugeleza phakathi komthwalo.

Uma i-photon ishaya isibambisi se-PN junction, ijabulisa i-electron, okubangela ukuthi ithuthele ebhendini yokuqhuba futhi yakhe ipheya ye-electron-hole (eh).

Itheminali kungqimba lwe-P-doped ithatha i-electron ejabulile, ebangela ukuthi ugesi ugeleze phakathi komthwalo.

Ngemva kokudlula emthwalweni, i-electron ibuyela ekuthinteni kwangemuva kweseli futhi iphinde ihlangane nembobo, ivale umbhangqwana we-eh. Njengoba amamojula edala amandla, lokhu kwenzeka ngaso sonke isikhathi.

Into eyaziwa ngokuthi i-surface recombination ikhawulela ukusebenza kahle kwamamojula avamile we-c-Si PV. Lezi zinto ezimbili zenzeka ebusweni bento lapho i-electron ijabule. Bangakwazi ukuphinde bahlangane ngaphandle kokuthi i-electron ithathwe futhi igeleze njengomsinga kagesi.

Ingabe i-HJT Solar Cell Iyasebenza Futhi Ithembekile?

Ngenxa ye-hydrogenated intrinsic amorphous Si (a-Si:H emfanekisweni 1) engase inikeze ukukhubazeka okuhle kakhulu kuzo zombili izindawo ezingemuva nangaphambili zama-Si wafers, i-HJT ibonisa ukusebenza kahle kwamaseli elanga (kokubili uhlobo lwe-p kanye nohlobo lwe-n-type polarity ).

I-ITO njengoxhumana nabo obala ithuthukisa ukugeleza kwamanje ngenkathi isebenza njengongqimba olumelene nokubukisa ukuze kuthuthukiswe ukuthwebula ukukhanya. Enye indlela yokubeka i-ITO phansi iwukuba ukwenze ngokusebenzisa i-sputtering emazingeni okushisa aphansi, okuzogcina ungqimba lwe-amorphous lungaphinde lucwebezele. Lokhu kuzokwenza inqwaba ye-Si surface ingadluli ezintweni ezikuyo.

Naphezu kwezinkinga zayo zokucubungula nezindleko zokuqala ezibizayo, i-HJT isewubuchwepheshe obudumile. Uma kuqhathaniswa nobuchwepheshe be-TOPCON, PERT, kanye ne-PERC, le nqubo ibonise amandla okukhiqiza. > 23% ukusebenza kahle kwamaseli elanga.

Imishini ye-HJT Solar Panel?

imishini ye-HJT solar Panel eyenza icishe ifane nokujwayelekile imishini yokwenza amaphaneli elanga, kodwa imishini embalwa ehlukile 

isibonelo: I-HJT solar cell tabber stringer, i-HJT solar cell tester, kanye ne-HJT solar panel laminator.

nemishini yokuphumula icishe ifane nokujwayelekile, yakha izixazululo zethu zokumisa eyodwa esingahlinzeka ngayo yonke imishini yamaphaneli elanga e-HJT