Ulwazi

PERT iseli solar | Konke okudingeka ukwazi

PERT iseli solar | Konke okudingeka ukwazi

Amaseli elanga e-PERT akalwe kakhulu phakathi kobuchwepheshe bamandla elanga obusebenza kahle kakhulu obungafakwa ekwakhiweni kwe-mono facial kanye ne-bifacial cell cell designs. 

Ngisho noma amaseli elanga e-PERT ebiza kancane ukuwenza kunozakwabo bawo abavamile be-silicon futhi asetshenziswa ngokuyinhloko ezimbonini ze-niche ezifana nezimoto zelanga noma izinhlelo zokusebenza zasemkhathini, bonke abenzi bamaseli elanga balwela ukuwakha nokuwamaketha ngenhloso yokuwanikeza isiphetho esiphezulu. kanye nezixazululo zekhwalithi kubathengi bazo. Amaseli elanga akabili athola ukuduma okukhulu. Uma zibekwe kahle ezindaweni ezivulekile noma endaweni eyisicaba, zingase zimunce ukukhanya futhi zikwazi ukukhiqiza amandla kagesi kuzo zombili izindawo ezingaphezulu- zigcine zilethe isivuno esikhuphukela ku-30% kunamaseli akho avamile.

Amaseli elanga e-PERT: Asebenza kanjani? 

I-PERT imele I-Pasivated Emitter Rear Ihlakazeke Ngokuphelele amaseli. Banendawo yangemuva ehlukanisiwe, okuwushintsho olukhulu kozakwabo abavamile abasebenzisa i-BSF ye-aluminium-alloy. Kalula nje, i-emitter ye-wafer esekelwe kuhlobo lwe-p yenziwa ngokusatshalaliswa kwe-phosphorus, futhi i-BSF yenziwa nge-boron doping ku-p-PERT. 

Amaseli e-PERT awakwazi ukushabalala ngenxa yokukhanya futhi angakwazi ukujwayela ukuma kweseli elikabili. Lokhu kusanda kuveza intshisekelo yomkhakha we-solar PV kanye namanyuvesi ocwaningo. Ososayensi be-PV bazama ezinye izakhiwo zamangqamuzana ukuze kuthuthukiswe ukusebenza kahle kwamaseli elanga e-Si asebenziseka embonini- ikakhulukazi njengoba ukwakheka okuhlobene kakhulu kwe-PERC kubonakala sengathi sekufinyelele ithafa lomkhawulo wokuguqulwa kwamandla okungenzeka kube khona.

Ukusebenza kahle kwamaseli elanga e-PERT

 Ngaphansi kwemingcele evamile ye-spectrum ye-AM1.5 ku-25°Celcius lokushisa, ukusebenza kahle okuphezulu kwe-emitter passivated; I-Pasivated Emitter Rear Ihlakazeke Ngokuphelele amaseli athole ukusebenza kahle kokuguqulwa kwamandla okungamaphesenti angaba ngu-25. Lesi yisibalo esithembisa kakhulu sokuguqulwa kwamandla esake sarekhodwa seseli ye-silicon esekelwe ku-non-FZ silicon substrate. Ukusatshalaliswa kwe-boron ethambile esakhiweni seseli yeseli ye-PERT akunciphisanga nje ukumelana nochungechunge lweseli kodwa futhi kwakhulisa amandla ayo ogesi ovula isekethe. 

Uhlobo lwe-P lwe-PERC V/S N-uhlobo lwe-PERT 

I-PERC, emele ukwakheka kokuxhumana kwangemuva kwe-passivated emitter, ifaka inkambu yendawo yangemuva eyenziwe yasendaweni, ewumahluko oyinhloko phakathi kohlobo lwe-p-PERC kanye ne-n-type PERT (BSF). I-BSF isetshenziswa ngesikhathi sokuqhunyiswa kwensimbi ngokubambisana ngokufaka i-Al ku-Si. Ngokusungula ukuxhumana okuphansi kakhulu ne-p-type Si base wafer, i-BSF isiza ekuthuthukiseni ukusebenza kahle kwamaseli elanga. Abagijimi abambalwa bayaxoshwa yileli sixhumanisi, okubavimbela ukuthi baphinde baxhumane endaweni engemuva ye-Si wafer. 

Ingemuva lesakhiwo se-PERT, ngokuphambene nalokho, "lisatshalaliswa ngokuphelele" nge-boron (uhlobo lwe-p) noma i-phosphorus (uhlobo lwe-n). Ubuchwepheshe be-solar cell be-PERT buvame ukusetshenziswa kumaseli we-n-type Si. Lokhu okokuzuza ekubekezeleni okuphezulu ekungcolisweni kwensimbi, i-coefficient yezinga lokushisa eliphansi, kanye nokuncipha kokunciphisa okubangelwa ukukhanya kwama-wafer ohlobo lwe-N ngaphezu kwamawafa ohlobo lwe-Si. Ngenxa yokuthi inqwaba ye-wafer yohlobo lwe-n ilayishwe i-phosphorus, ukuhlukana okubangelwa ukukhanya kuncishiswa ngo-n-uhlobo luka-Si, mhlawumbe ngenxa yokumataniswa okuphansi kwe-boron-oxygen. 

Ngaphandle kwalokhu, i-BSF "esatshalaliswe ngokuphelele" idinga ukuqashwa kwezindlela ezintsha ezifana nezinga lokushisa eliphezulu i-POCL kanye nokusabalalisa kwe-BBr3. Ngenxa yalokho, ukukhiqiza amaseli elanga e-PERT kubiza kakhulu kune-PERC. 

Nokho, i  I-Pasivated Emitter Rear Ihlakazeke Ngokuphelele I-BSF yendawo egcwele yamaseli ingase inikeze ukuhumusha okuphumelela kakhulu okuphansi kwe-junction passivation kune-PERC's evalekile, e-Al-based BSF eqinile. Isakhiwo se-tunnel oxide passivated contact (TOPCON) singaphinda sihlanganiswe nohlobo lwe-n-PERT. Inamandla okwenza lula okukhiphayo kwedivayisi nakakhulu. 

Ngenxa yokuphaphatheka kwe-Si substrate enobude besikhathi obuyidlanzana obunwetshiwe futhi akukho okonakaliswa kwe-BO okuyinkimbinkimbi ehambisanayo, amaseli elanga e-silicon e-N-type akhuphuka kancane kancane kumashadi adumile. Ngenxa yobulula bokucubungula, i-Bifacial Passivation Emitter kanye namaseli elanga e-PERT n-type ayizixazululo ezisebenza kahle kakhulu ezingathuthukiswa kalula yizimboni. Isizukulwane sama-P+ emitters bekungenye yezindlela eziphawulekayo ze-PERT. Sekuyiminyaka, ukusabalalisa kwe-BBr3 kusungulwe ukukhiqizwa ngobuningi, kodwa imboni ye-n-type ye-solar cell iye yaphazanyiswa yi-dopant homogeneity kanye nokuhlanganiswa kwenqubo. Inhlanganisela ye-boron inki spin coating kanye ne-POCl3 yokusabalalisa kumaseli elanga e-n-PERT yacwaningwa futhi yabhalwa phansi iphepha lokucwaninga. Amaseli elanga ane-bifaciality engaphezu kwamaphesenti angu-90 atholakale esebenza kahle ngaphezu kwamaphesenti angu-20.2, ngokusho kwemiphumela.

I-n-type bifacial bifacial PERT cell cell ingakhiqizwa kusetshenziswa ukugeleza kwenqubo okuhlanganisa ukufakwa kwe-ion ye-doping ehlangothini olulodwa. Kuholela kwikhwalithi evelele ye-emitter junction kanye nokuvumelana.

Amaseli elanga e-PERT ahlinzeka ngezinzuzo ezimbalwa, eziningi zazo ezibhalwe ngezansi:

●      Ngokungafani namaseli elanga e-PERC, inguqulo ye-PERT ifinyelela ukusebenza kahle okuphezulu ngokudlula ezintweni eziningi, okungukuthi i-Boron BSF PERT uphahla oluningi, engenakho ukuwohloka okubangelwa ukukhanya (LID).

●      Izindleko zobunikazi ziyefana namaseli e-PERC.

●      Ulayini we-PERT ungase futhi usetshenziselwe amaseli obuso obubodwa noma obuso obubili, okuwunikeza ukuguquguquka okuningi.

Ukukhiqizwa kwamaseli elanga e-PERT 

Amaseli elanga e-PERT akhiqizwa kusetshenziswa izindlela ezintsha nezinhlanganisela zokwandisa izinhlobo zamaseli ahlukile. Ngaphezu kweminyaka eyishumi, ubuchwepheshe obusha obuhlakaniphile obufana nezinhlelo ze-Atmospheric Pressure Chemical Vapor Deposition (APCVD) zinikelwe ekukhiqizeni ukuze kunikezwe izimpahla ngokwamukeleka okuphezulu. Ukwengeza, kusetshenziswa i-Horizontal Tube Furnace, i-phosphorus emitter kanye ne-boron BSF zitholakala ngomjikelezo owodwa wokushisa, okuholela ekubeni ubude bomjikelezo obufushane. Ngoba I-Pasivated Emitter Rear Ihlakazeke Ngokuphelele amaseli angase futhi asetshenziswe kumamojula weshidi elingemuva lendabuko, ukulungisa kabusha ulayini wokukhiqiza ukuthi usuke ekwenziweni kobuso obubodwa ukuya kobuso obubili kuwumsebenzi wamahora ambalwa kuphela.