Knowledges

Mhedziso yeTopcon photovoltaic module tekinoroji uye zvakanakira

TOPCon (Tunnel Oxide Passivated Contact) photovoltaic (PV) module tekinoroji inomiririra kufambira mberi muindasitiri yesolar yekuvandudza kushanda kwesero uye kuderedza mitengo. Iyo musimboti weiyo TOPCon tekinoroji iri mune yayo yakasarudzika passivation yekubata chimiro, iyo zvinonyatso dzikisa mutakuri kubatanidzwazve panzvimbo yesero, nekudaro ichiwedzera kutendeuka kwesero.

Zvinokosha Zveunyanzvi

1. Passivation Contact Structure: TOPCon maseru anogadzirira yakakura-yakaonda oxide silicon layer (1-2nm) kuseri kwesilicon wafer, inoteverwa nekuiswa kweiyo doped polycrystalline silicon layer. Ichi chimiro hachingopi yakanakisa interface passivation chete asi zvakare inoumba yakasarudzika yekutakura chiteshi, ichibvumira vazhinji vanotakura (maerekitironi) kupfuura apo ichidzivirira vashoma vatakuri (maburi) kubva pakusangana, nekudaro kuwedzera zvakanyanya sero rakavhurika-circuit voltage (Voc) uye kuzadza. chinhu (FF).

2. Kushandura Kubudirira Kwepamusoro: The theoretical maximum performance yeTOPCon masero akakwirira kusvika 28.7%, akakwirira zvikuru kupfuura 24.5% yeP-type PERC masero. Mumashandisirwo anoshanda, kuwanda kwekugadzirwa kwemasero eTOPCon kwapfuura 25%, paine mukana wekuwedzera kuvandudzwa.

3. Low Chiedza-Induced Degradation (LID): N-mhando yesilicon wafers ine yakaderera chiedza-induced degradation, zvinoreva kuti TOPCon modules inogona kuchengetedza yakakwirira yekutanga kushanda mukushandiswa kwechokwadi, kuderedza kushanda kurasikirwa kwenguva refu.

4. Optimized Temperature Coefficient: Chiyero chekushisa cheTOPCon modules chiri nani kupfuura chePERC modules, izvo zvinoreva kuti mumamiriro ekupisa kwepamusoro, kurasikirwa kwemagetsi eTOPCon modules kuduku, kunyanya munzvimbo dzinopisa uye dzerenje uko izvi zvakakosha zvinonyanya kuoneka.

5. kugarisana: TOPCon tekinoroji inogona kuenderana neiripo PERC mitsara yekugadzira, ichingoda mashoma ekuwedzera zvishandiso, senge boron diffusion uye nhete-firimu deposition michina, pasina kudiwa kwekumashure kuvhurwa uye kurongeka, kurerutsa maitiro ekugadzira.

Production Process

Maitiro ekugadzira eTOPCon masero anonyanya kusanganisira anotevera matanho:

1. Silicon Wafer Kugadzirira: Chekutanga, N-mhando silicon wafers anoshandiswa sehwaro zvinhu zvesero. N-mhando mawafer ane epamusoro mashoma ekutakura hupenyu hwese uye nani asina kusimba mwenje mhinduro.

2. Oxide Layer Deposition: Iyo yakanyanya-yakaonda oxide silicon layer inoiswa kumashure kwesilicon wafer. Ukobvu hweiyi oxide silicon layer kazhinji iri pakati pe1-2nm uye ndiyo kiyi yekuwana passivation kuonana.

3. Doped Polycrystalline Silicon Deposition: A doped polycrystalline silicon layer inoiswa pane iyo oxide layer. Iyi polycrystalline silicon layer inogona kuwanikwa kuburikidza ne-low-pressure chemical vapor deposition (LPCVD) kana plasma-enhanced chemical vapor deposition (PECVD) teknolojia.

4. Annealing Treatment: High-tembiricha annealing kurapwa inoshandiswa kushandura crystallinity yepolycrystalline silicon layer, nekudaro activating the passivation performance. Iyi nhanho yakakosha kuti uwane yakaderera interface recombination uye yakakwirira masero kushanda zvakanaka.

5. Metallization: Metal grid mitsetse uye mapoinzi ekusangana anoumbwa kumberi uye kumashure kwesero kuunganidza mafoto-anogadzirwa anotakura. Iyo metallization process yeTOPCon maseru inoda kutariswa kwakanyanya kudzivirira kukuvadza passivation yekubata chimiro.

6. Kuedza uye Kuronga: Mushure mekugadzirwa kwesero kwapera, bvunzo dzekuita kwemagetsi dzinoitwa kuti ive nechokwadi chekuti maseru anosangana neakafanotemerwa maitiro ekuita. Iwo maseru anobva arongwa zvinoenderana nemaitiro ekuita kuti asangane nezvido zvemisika dzakasiyana.

7. Module Gungano: Masero anounganidzwa mumamodules, anowanzo kuputirwa nezvinhu zvakadai segirazi, EVA (ethylene-vinyl acetate copolymer), uye backsheet kudzivirira masero uye kupa rubatsiro rwemaitiro.

Zvakanakira uye Zvinetso

Zvakanakira TOPCon tekinoroji iri mukushanda kwayo kwepamusoro, yakaderera LID, uye yakanaka tembiricha coefficient, izvo zvese zvinoita kuti TOPCon modules ishande uye ine hupenyu hurefu mumashandisirwo chaiwo. Nekudaro, TOPCon tekinoroji inotarisanawo nematambudziko emitengo, kunyanya maererano nekudyara kwemidziyo yekutanga uye mutengo wekugadzira. Nekuenderera mberi kwetekinoroji uye kudzikiswa kwemutengo, zvinotarisirwa kuti mutengo weTOPCon masero uchadzikira zvishoma nezvishoma, uchiwedzera kukwikwidza kwavo mumusika we photovoltaic.

Muchidimbu, TOPCon tekinoroji igwara rakakosha rekusimudzira iyo photovoltaic indasitiri. Iyo inovandudza kutendeuka kwekushanda kwemasero ezuva kuburikidza nehunyanzvi hwekuvandudza tekinoroji uku ichichengetedza kuenderana nemitsara yekugadzira iripo, ichipa rutsigiro rwakasimba rwehunyanzvi hwekusimudzira indasitiri yephotovoltaic. Nekuenderera mberi kwetekinoroji uye kuderedzwa kwemutengo, TOPCon photovoltaic modules inotarisirwa kutonga musika wephotovoltaic mune ramangwana.