- Selelekela sa Lisele
(1) Kakaretso:Lisele ke likarolo tsa mantlha tsatlhahiso ea matla a photovoltaic, 'me tsela ea bona ea theknoloji le boemo ba ts'ebetso e ama ka ho toba katleho ea ho hlahisa matla le bophelo ba tšebeletso ea li-module tsa photovoltaic.Lisele tsa photovoltaic li fumaneha bohareng ba ketane ea indasteri ea photovoltaic.Ke lishiti tse tšesaane tsa semiconductor tse ka fetolang matla a khanya a letsatsi ho a etsa matla a motlakase a fumanoang ka ho sebetsana le liphaephe tsa silicon tse le 'ngoe / poly crystalline.
Molao-motheo oatlhahiso ea matla a photovoltaice tsoa ho phello ea photoelectric ea li-semiconductors.Ka ho bonesa, phapang e ka bang teng e hlahisoa lipakeng tsa likarolo tse fapaneng tsa li-semiconductors tse homogeneous kapa li-semiconductors tse kopantsoeng le litšepe.E fetoloa ho tloha ho photons (maqhubu a khanyang) ho li-electrone le matla a khanyang ho matla a motlakase ho etsa motlakase.le tshebetso ya jwale.Li-wafers tsa silicon tse hlahisoang sehokelong se ka holimo ha li khone ho tsamaisa motlakase, 'me lisele tsa letsatsi tse sebetsitsoeng li lekanya matla a ho hlahisa matla a li-module tsa photovoltaic.
(2) Sehlopha:Ho latela mofuta oa substrate, lisele li ka aroloa ka mefuta e 'meli:Lisele tsa mofuta oa P le lisele tsa mofuta oa N.Doping boron ka likristale tsa silicon e ka etsa li-semiconductors tsa mofuta oa P;phosphorus ea doping e ka etsa li-semiconductors tsa mofuta oa N.Thepa e tala ea betri ea mofuta oa P ke mofuta oa P-silicon wafer (e entsoeng ka boron), 'me thepa e tala ea betri ea mofuta oa N ke sephaphatha sa silicon sa mofuta oa N (se nang le phosphorus).Lisele tsa mofuta oa P haholo li kenyelletsa BSF (seleng e tloaelehileng ea aluminium back field cell) le PERC (passivated emitter le back cell);Lisele tsa mofuta oa N li ntse li le theknoloji e tsebahalang haholoTOPCon(tunneling oxide layer passivation contact) le HJT (filimi e tšesaane e ka hare ea Hetero junction).Betri ea mofuta oa N e tsamaisa motlakase ka lielektrone, 'me ho fokotseha ho bakoang ke leseli ho bakoang ke para ea athomo ea boron-oksijene ho fokotsehile, kahoo matla a ho fetola photoelectric a phahame.
3. Kenyelletso ea betri ea PERC
(1) Kakaretso: Lebitso le felletseng la betri ea PERC ke "emitter le back passivation battery", eo ka tlhaho e nkiloeng ho sebopeho sa AL-BSF sa betri e tloaelehileng ea aluminium ea morao.Ho ea ka pono ea meralo, tse peli li batla li tšoana, 'me betere ea PERC e na le sekhahla se le seng feela sa morao ho feta betri ea BSF (theknoloji ea betri ea moloko o fetileng).Sebopeho sa "passivation stack" se ka morao se lumella sele ea PERC ho fokotsa lebelo la ho kopanya sebaka se ka morao ha e ntse e ntlafatsa ponahalo ea leseli le ka morao le ho ntlafatsa ts'ebetso ea phetoho ea sele.
(2) Histori ea tsoelo-pele: Ho tloha 2015, libeteri tsa malapeng tsa PERC li kene sethaleng sa khōlo e potlakileng.Ka 2015, matla a tlhahiso ea betri ea lehae ea PERC a fihlile sebakeng sa pele lefatšeng, a nka karolo ea 35% ea matla a tlhahiso ea betri ea PERC lefatšeng ka bophara.Ka 2016, "Photovoltaic Top Runner Program" e kentsoeng ke National Energy Administration e ile ea lebisa qaleho ea molao ea tlhahiso ea boima ba indasteri ea lisele tsa PERC Chaena, ka karolelano ea katleho ea 20.5%.2017 ke phetoho ea karolo ea 'maraka ealisele tsa photovoltaic.Karolo ea 'maraka ea lisele tse tloaelehileng e ile ea qala ho theoha.Kabelo ea 'maraka ea PERC ea malapeng e eketsehile ho 15%,' me matla a eona a tlhahiso a eketsehile ho 28.9GW;
Ho tloha ka 2018, libeteri tsa PERC e se e le tsona tse ka sehloohong 'marakeng.Ka 2019, tlhahiso e kholo ea lisele tsa PERC e tla potlakisa, ka katleho e kholo ea tlhahiso ea 22.3%, e ikarabellang ho feta 50% ea matla a tlhahiso, e fetang ka molao lisele tsa BSF ho ba theknoloji e ka sehloohong ea lisele tsa photovoltaic.Ho ea ka likhakanyo tsa CPIA, ka 2022, katleho ea tlhahiso ea boima ba lisele tsa PERC e tla fihla ho 23.3%, 'me matla a tlhahiso a tla ikarabella ho feta 80%,' me karolo ea 'maraka e ntse e tla ba ea pele.
4. TOPcon betri
(1) Tlhaloso:TOPCon betri, ke hore, tunneling oxide layer passivation contact cell, e lokiselitsoe ka morao ho betri e nang le lesela le tšesaane haholo la tunneling oxide le lera la polysilicon e tšesaane haholo, e kopantsoeng ho theha sebopeho sa ho kopana le passivation.Ka 2013, e ile ea hlahisoa ke Setsi sa Fraunhofer Jeremane.Ha ho bapisoa le lisele tsa PERC, e 'ngoe ke ho sebelisa silicon ea mofuta oa n e le substrate.Ha ho bapisoa le lisele tsa silicon tsa mofuta oa p, silicon ea mofuta oa n e na le bophelo bo bolelele ba bajari ba batho ba fokolang, bokhoni bo phahameng ba ho sokoloha, le khanya e fokolang.Ea bobeli ke ho lokisa lera la passivation (ultra-thin silicon oxide SiO2 le doped poly silicon thin layer Poly-Si) ka morao ho theha mohaho oa ho kopana o arolang ka ho feletseng sebaka se entsoeng ka tšepe, se ka fokotsang mokokotlo. bokahodimo.Monyetla oa ho kopanya mokhanni o monyenyane pakeng tsa bokaholimo le tšepe o ntlafatsa bokhoni ba ho fetola betri.
Nako ea poso: Aug-29-2023