Iyini isikebhe se-Solar Graphite?

Embonini ye-solar photovoltaic (PV) eshintsha ngokushesha, ukunemba kanye nokusungula izinto kubalulekile ekuthuthukiseni ukusebenza kahle kokuguqulwa kwamandla. Phakathi kwamaqhawe angakadunyiswa kule nqubo kukhona iSolar Graphite Boat, ingxenye ekhethekile eyenzelwe ukukhiqizwa kwe-semiconductor yokushisa okuphezulu. Yasungulwa yi-VET Energy, umenzi ohamba phambili wezinto ezithuthukisiwe, lezi zikebhe ze-graphite zidlala indima ebalulekile ekukhiqizeni amaseli elanga asebenza kahle kakhulu. Ake sihlole ukusetshenziswa kwazo, izakhiwo zomzimba, nokuthi kungani zibalulekile kubuchwepheshe belanga besimanje.

Iyini isikebhe se-Solar Graphite?

Isikebhe se-Solar Graphite siyisakhiwo sokuthwala esisetshenziswa enkambisweni ye-Plasma Enhanced Chemical Vapor Deposition (PECVD), isinyathelo esiyinhloko ekwakhiweni kwamaseli elanga. Sibamba ngokuphephile ama-silicon wafers ngesikhathi sokufakwa kwamafilimu amancane, njengezingubo ezivimbela ukukhanya kanye nezendlalelo zokudlula, ezibalulekile ekwandiseni ukumuncwa kokukhanya nokunciphisa ukulahleka kwamandla kumaseli elanga.

I-VET Energy'sIzikebhe ze-graphite ze-PECVDzenzelwe ukumelana nezimo ezimbi kakhulu ngenkathi ziqinisekisa ukufana nokuthembeka. Ukwakheka kwazo kuthinta ngqo ikhwalithi yamafilimu agciniwe, okunquma ukusebenza kahle nokuqina komkhiqizo wokugcina welanga.

Izicelo Eziyinhloko Ekukhiqizweni Kwe-PV Yelanga

1. Ukufakwa Kwengubo Engabonisi Ukukhanya
Amaseli elanga athembele ekumbozweni okuvimbela ukukhanya ukuze anciphise ukukhanya futhi andise ukumuncwa kwe-photon. Isikebhe se-graphite siqinisekisa ukuthi ama-silicon wafers abonakala ngokulinganayo kumagesi asabelayo ngesikhathi se-PECVD, okudala umbozwe ofanayo othuthukisa ukubanjwa kokukhanya.

2. Ukudlula Komphezulu
Izingqimba zokudlulisa (isb., i-silicon nitride) zisetshenziswa ukunciphisa amaphutha obuso kanye nokulahlekelwa kokuphinda kuhlanganiswe. Izikebhe ze-VET Energy zigcina ukulawulwa okunembile kokushisa kanye nokusatshalaliswa kwegesi, okubalulekile ekwakheni izingqimba zokudlulisa ezingenamaphutha ezithuthukisa ubude besikhathi samaseli.

3. Ukukhiqizwa Okuphezulu
Njengoba zenzelwe ukuhambisana nezinhlelo ze-PECVD zezimboni, lezi zikebhe zisekela ukucutshungulwa okusheshayo kwama-wafer amaningi ngasikhathi sinye, okuthuthukisa ukusebenza kahle kokukhiqiza kwemigqa emikhulu yokukhiqiza amaphaneli elanga.

Izakhiwo Eziphakeme Zomzimba Zezikebhe Ze-Graphite ze-VET Energy

Ukusebenza kwesikebhe se-graphite kuncike ezicini zaso ezibonakalayo. I-VET Energy ihlanganisa ubunjiniyela be-graphite obuthuthukisiwe kanye nezingubo ezizimele ukuze ilethe:

1. Ukuzinza Okushisayo Okumangalisayo
- Amazinga okushisa okusebenza ku-PECVD avame ukudlula u-1,200°C. Izikebhe zigcina ubuqotho besakhiwo futhi zinciphisa ukwanda kokushisa, ziqinisekisa ukuhambisana kwe-wafer ngisho nangaphansi kwemijikelezo yokushisa/yokupholisa okusheshayo.
- Ukushisa okuphezulu (23 W/m·K) kuqinisekisa ukusatshalaliswa kokushisa okufanayo, kuvimbela izindawo ezishisayo ezingalimaza ama-wafer.

2. Ukumelana namakhemikhali
- Ayimelani namagesi agqwalisayo njenge-NH₃ kanye ne-SiH₄, avame kakhulu ezinqubweni ze-PECVD. Lokhu kwandisa isikhathi sokuphila kwesikebhe futhi kunciphisa izingozi zokungcola.

3. Umklamo Wokugeleza Kwegesi Okwenziwe Kahle
- Imiklamo yobunini iqinisekisa ukugeleza kwegesi ngokulinganayo kuzo zonke izingcezu ze-wafer, okubalulekile ekuqineni nasekubunjweni kwefilimu okufanayo. Lokhu kuchaza ngqo ukusebenza kahle kwamaseli elanga.

4. Impilo Ende Yenkonzo
- Izembozo ze-CVD ezithuthukisiwe (isb., i-silicon carbide noma i-tantalum carbide) zithuthukisa ukuqina. Isibonelo, izingxenye ze-VET Energy ezimbozwe nge-TaC zimelana namazinga okushisa angaphezu kuka-2,500°C futhi zimelana nokugqwala kwensimbi encibilikisiwe, okuyisikhathi sokuphila esiphindwe kathathu uma kuqhathaniswa nezinto ezivamile.

5. Amakhono Okwenza Ngokwezifiso
- Ubukhulu kanye nokwembozwa okulungiselelwe ukuze kuhambisane nemishini ethile (isb., ubukhulu be-wafer kusukela ku-4-intshi kuya ku-12-intshi) kanye nezidingo zenqubo, okuqinisekisa ukuhlanganiswa okungenamthungo emigqeni yokukhiqiza ekhona.

Isikebhe se-graphitevs.isikebhe se-quartz

Ukumelana okuhle kakhulu nokushisa okuphezulu

- Izikebhe ze-Graphite zingamelana namazinga okushisa aphezulu kakhulu angu-1,200°C~2,500°C, futhi zibe ne-coefficient yokukhulisa ukushisa ephansi ngaphakathi kwalolu hlu (isibonelo, i-coefficient yokukhulisa ukushisa yemikhiqizo ye-VET Energy ingu-4.8×10⁻⁶/°C), engagcina ukuzinza kwesakhiwo kanye nokunemba kokulungiswa kwe-wafer. Ngokuphambene nalokho, umkhawulo wokushisa ophezulu wezikebhe ze-quartz uvame ukuba ngu-1,200°C, futhi ukusetshenziswa kwesikhathi eside kwezinga lokushisa eliphezulu kungabangela ukuguquka noma imifantu.

Ukushisa okuhle kakhulu kanye nokufana

- Ukushisa kwe-graphite (cishe ama-23 W/m·K) kuphakeme kakhulu kune-quartz (cishe ama-1.4 W/m·K), ngakho-ke ezinqubweni ezifana ne-PECVD (i-plasma enhanced chemical vapor deposition), izikebhe ze-graphite zingafinyelela ukusatshalaliswa kokushisa okufanayo, zinciphise umehluko ekujikeni kwefilimu ye-wafer, futhi zithuthukise ikhwalithi yengqimba yokudlulisa amaseli elanga.

Ukumelana okunamandla nokugqwala kwamakhemikhali

- Izikebhe ze-graphite zibekezelela kakhulu amagesi agqwalisayo njenge-NH₃ (ammonia) kanye ne-SiH₄ (silane), futhi zifanele izinqubo ezidinga ukuchayeka njalo kumagesi asabelayo (njenge-tubular PERC cell coating). Ngaphezu kwalokho, ngokumboza ubuso nge-silicon carbide (SiC) noma i-tantalum carbide (TaC), impilo yesevisi ingandiswa kakhulu (isibonelo, i-VET Energy's TaC coating ingamelana namazinga okushisa aphezulu angu-2,500°C).

Impilo engabizi futhi ende

- Izikebhe ze-graphite ziqinile futhi zingasetshenziswa kabusha izikhathi eziningi emigqeni yokukhiqiza yezimboni, futhi izindleko zokulungisa ziphansi kunezezikebhe ze-quartz. Isibonelo, izikebhe ze-graphite ezenziwe ngokwezifiso ze-VET Energy zingasekela izidingo zokukhiqiza ezinkulu zama-wafer angu-4 ~ 12-intshi ngokuklama okulungiselelwe, kunciphisa izindleko zenqubo nge-wafer ngayinye.

Kungani UkhethaAmandla e-VET?

I-VET Energy ivelele emkhakheni wezinto ezithuthukisiwe ngenxa yalokhu okulandelayo:
- Ubuchwepheshe be-R&D: Ithimba lobuchwepheshe elivela ezikhungweni zocwaningo eziphezulu, okuhlanganisa ne-Chinese Academy of Sciences, liqhuba ukusungula izinto ezintsha kwisayensi yezinto ezibonakalayo.
- Ukuqinisekiswa Kwekhwalithi: Izinhlelo zokulawula ikhwalithi eziqinile kanye nobuchwepheshe bokumboza obunelungelo lobunikazi (isb., izendlalelo ze-CVD eziboshwe ngokuqinile) ziqinisekisa ukuthembeka komkhiqizo.
- Impendulo Esheshayo: Izixazululo ezenziwe ngokwezifiso kanye nezikhathi zokulethwa okusheshayo (isb., izinsuku ezingu-15 zama-oda angaphansi kwamayunithi ayi-1,000) kunciphisa isikhathi sokungasebenzi kwabakhiqizi.
- Ukuqashelwa kwamakhasimende: Ngemva kweminyaka eminingi yokwanda kwemvula nokuqoqana kwezobuchwepheshe, isikebhe se-graphite se-VET Energy selanga sithunyelwe emazweni nasezifundeni ezingaphezu kwe-100, futhi isabelo saso semakethe eYurophu nase-United States siphezulu ngamaphesenti angama-70, sithola udumo olukhulu kanye nodumo olukhulu kumakhasimende. Ngokuqinisekile kuyisinqumo sakho esingcono kakhulu.