Mu nganda zikora imirasire y'izuba (PV) zigenda zihinduka vuba, ubuhanga n'udushya mu bikoresho ni ingenzi cyane mu kongera ubushobozi bwo guhindura ingufu. Mu ntwari zitaramenyekana muri iki gikorwa harimo ubwato bwa graphite y'izuba, igice cyihariye cyagenewe gukora ibikoresho bipima ubushyuhe bwinshi. Byakozwe na VET Energy, ikigo gikomeye mu gukora ibikoresho bigezweho, ubwo bwato bwa graphite bugira uruhare runini mu gukora uturemangingo tw'izuba dukora neza cyane. Reka turebe uko byakoreshwa, imiterere yabyo, n'impamvu ari ingenzi mu ikoranabuhanga rya none ry'izuba.
Ubwato bwa Graphite y'izuba ni iki?
Ubwato bwa Graphite y'izuba ni igikoresho gikoreshwa mu gikorwa cyo gusohora umwuka wa Plasma Enhanced Chemical Vapor Deposition (PECVD), intambwe y'ingenzi mu gukora uturemangingo tw'izuba. Bufata neza utubuto twa silicone mu gihe cyo gushyiramo uduce duto, nk'udupira duto two mu bwoko bwa anti-reflective coating na passivation layers, ibyo bikaba ari ingenzi mu gutuma urumuri rurushaho kwinjiza no kugabanya ibura ry'ingufu mu turemangingo tw'izuba.
VET Energy'sUbwato bwa grafiti bwa PECVDbyakozwe kugira ngo bihangane n’imimerere idasanzwe ariko bikanagaragaza ko ari bimwe kandi ko byizerwa. Imiterere yabyo igira ingaruka ku buryo butaziguye ku bwiza bwa filimi zibitswe, ibyo bikaba ari nabyo bigena imikorere myiza n’uburambe bw’umusaruro wa nyuma w’izuba.
Ikoreshwa ry'ingenzi mu gukora PV zikoresha imirasire y'izuba
1. Gushyiramo irangi rirwanya kugarura urumuri
Uturemangingo tw’izuba twishingikiriza ku bitwikirizo birwanya urumuri kugira ngo bigabanye urumuri kandi byongere ubushobozi bwo kwinjiza fotoni. Ubwato bwa grafiti butuma ibyuma bya silikoni bihura neza n’imyuka ikora mu gihe cya PECVD, bigatuma habaho irangi rimwe rituma urumuri rufata neza.
2. Guhindura imiterere y'ubuso
Uduce tw’ingufu zo gusimbuka (urugero, silicon nitride) dukoreshwa kugira ngo tugabanye inenge zo ku buso n’igihombo cyo gusubiranamo. Uduce twa VET Energy ducunga neza ubushyuhe n’ikwirakwizwa rya gaze, bikaba ari ingenzi cyane mu gukora uduce tw’ingufu zo gusimbuka tudafite inenge, bigatuma uturemangingo turamba.
3. Umusaruro utanga umusaruro mwinshi
Yagenewe guhuza na sisitemu za PECVD zo mu nganda, izi bwato zifasha gutunganya vuba wafer nyinshi icyarimwe, bikongera imikorere myiza mu nganda zikora imiyoboro minini y’amashanyarazi akomoka ku mirasire y’izuba.
Imiterere myiza y'ubwato bwa grafiti bwa VET Energy
Imikorere y'ubwato bwa grafiti ishingiye ku miterere y'ibikoresho byabwo. VET Energy ihuza ubuhanga buhanitse bwa grafiti n'amabara yihariye kugira ngo itange:
1. Ubushyuhe budasanzwe buhamye
- Ubushyuhe bwo gukora muri PECVD bukunze kurenga 1,200°C. Ubwato bugumana imiterere yabwo kandi bugagabanya kwaguka k'ubushyuhe, bigatuma buhora buhuza neza nubwo haba hari ubushyuhe/ubukonje bwihuse.
- Ubushyuhe bwinshi (23 W/m·K) butuma ubushyuhe bukwirakwira neza, bukarinda ahantu hashobora kwangiza wafer.
2. Ubudahangarwa bw'ibinyabutabire
- Irwanya imyuka yangiza nka NH₃ na SiH₄, ikunze kugaragara mu bikorwa bya PECVD. Ibi byongera igihe cyo kubaho k'ubwato kandi bigabanya ibyago byo kwandura.
3. Igishushanyo mbonera cy'umuvuduko wa gaze cyiza
- Imiterere y'umutungo bwite ituma gazi ikwirakwira neza mu macupa yose, bikaba ari ingenzi cyane ku bugari bwa filimi n'imiterere yayo. Ibi bivuze ko amashanyarazi y'izuba akoreshwa neza cyane.
4. Igihe kirekire cyo gukorera
- Irangi rya CVD rigezweho (urugero, silicon carbide cyangwa tantalum carbide) rituma ibintu biramba. Urugero, ibice bya VET Energy bya TaC bihangana n'ubushyuhe buri hejuru ya 2,500°C kandi birwanya ingese y'icyuma gishongeshejwe, bikaba bimara igihe kinini incuro eshatu ugereranije n'ibikoresho bisanzwe.
5. Ubushobozi bwo guhindura ibintu
- Ingano n'amabara byakozwe neza kugira ngo bihuze n'ibikoresho byihariye (urugero, ingano ya wafer kuva kuri santimetero 4 kugeza kuri santimetero 12) n'ibisabwa mu gutunganya, bigamije gushyira hamwe neza mu miyoboro isanzwe ikorwa.
Ubwato bwa grafitiugereranije naubwato bwa quartz
Ubudahangarwa bwiza cyane ku bushyuhe buri hejuru
- Ubwato bwa grafiti bushobora kwihanganira ubushyuhe bwinshi cyane bwa 1.200°C ~ 2.500°C, kandi bukagira igipimo cyo kwaguka k'ubushyuhe gito muri uru rwego (urugero, igipimo cyo kwaguka k'ubushyuhe bw'ibicuruzwa bya VET Energy ni 4.8×10⁻⁶/°C), bishobora kubungabunga imiterere ihamye no guhuza neza inyubako. Mu buryo bunyuranye, ubushyuhe bwo hejuru bw'ubwato bwa quartz bukunze kuba 1.200°C, kandi gukoreshwa igihe kirekire mu bushyuhe bwinshi bishobora gutera kwangirika cyangwa kwangirika.
Uburyo bwiza bwo gutwara ubushyuhe n'ubukonje
- Ubushyuhe bwa grafiti (hafi 23 W/m·K) buri hejuru cyane ugereranyije n’ubwa quartz (hafi 1.4 W/m·K), bityo mu buryo nka PECVD (plasma enhanced chemical vapor deposition), ubwato bwa grafiti bushobora kugera ku gukwirakwiza ubushyuhe bumwe, kugabanya itandukaniro mu bunini bwa wafer film, no kunoza ubwiza bw’urwego rwa passivation rw’uturemangingo tw’izuba.
Ubudahangarwa bukomeye ku kwangirika kw'ibinyabutabire
- Ubwato bwa grafiti bushobora kwihanganira cyane imyuka ihumanya nka NH₃ (ammonia) na SiH₄ (silane), kandi bukwiriye ibikorwa bisaba guhura kenshi n'imyuka ikora (nk'ingufu za PERC cell coating). Byongeye kandi, iyo usize hejuru silicon carbide (SiC) cyangwa tantalum carbide (TaC), ubuzima bwo gukora bushobora kongerwa (urugero, ingufu za VET Energy za TaC zishobora kwihanganira ubushyuhe bwinshi bwa 2,500°C).
Ihendutse kandi iramba
- Ubwato bwa grafiti buramba cyane kandi bushobora gukoreshwa inshuro amagana ku nganda zikora, kandi ikiguzi cyo kubungabunga kiri hasi ugereranyije n'ubwato bwa quartz. Urugero, ubwato bwa grafiti bwa VET Energy bushobora gufasha mu gutunganya cyane wafers za santimetero 4 ~ 12 binyuze mu buryo bwiza, bigabanyiriza ikiguzi cyo gukora kuri wafer imwe.
Impamvu yo GuhitamoVET Energy?
VET Energy iragaragara cyane mu rwego rw'ibikoresho byateye imbere bitewe nuko:
- Ubuhanga mu bushakashatsi no mu iterambere: Itsinda ry’abahanga mu bya tekiniki riturutse mu bigo bikomeye by’ubushakashatsi, harimo n’Ishuri Rikuru ry’Ubumenyi ry’Abashinwa, riyobora udushya mu bumenyi bw’ibikoresho.
- Gutanga Ireme: Sisitemu zikomeye zo kugenzura ubuziranenge n'ikoranabuhanga ryo gusiga rifite uburenganzira bwo gukoresha (urugero, imiterere ya CVD ifatanye neza) bishimangira ko ibicuruzwa byizewe.
- Gusubiza byihuse: Ibisubizo byihariye n'igihe cyo gutanga vuba (urugero, iminsi 15 ku bicuruzwa biri munsi y'ibicuruzwa 1.000) bigabanya igihe cyo gukora ku nganda.
- Kumenyekana kw'abakiriya: Nyuma y'imyaka myinshi y'imvura n'ubwinshi bw'izuba mu ikoranabuhanga, ubwato bwa VET Energy bwo gukoresha imirasire y'izuba bwoherejwe mu bihugu birenga 100 n'uturere, kandi isoko ryabwo mu Burayi na Leta Zunze Ubumwe za Amerika riri hejuru ya 70%, rikaba ryarahawe ishimwe rikomeye kandi rigashimwa n'abakiriya benshi. Ni bwo buryo bwiza cyane bwo guhitamo.
Igihe cyo kohereza: 22 Mata 2025