Ubwino ndi kuipa kwa ma cell a solar amafilimu opyapyala
Ubwino ndi kuipa kwa ma cell a solar amafilimu opyapyala
Ma cell a solar opyapyala amagwiritsidwa ntchito kwambiri m'malo obiriwira obiriwira amtundu wa photovoltaic ndi malo opangira ma photovoltaic omwe amafunikira kufalitsa kuwala. Kodi mukudziwa ubwino ndi kuipa kwa maselo woonda filimu dzuwa? Kodi solar yamtundu wopyapyalayi imakhala zaka zingati?
Pakalipano, maselo a dzuwa omwe alipo omwe alipo kwambiri amaphatikizapo: ma cell a dzuwa a cadmium telluride, copper indium gallium selenide, ndi maselo a dzuwa a amorphous silicon.
1. Ubwino wa ma cell a solar amafilimu opyapyala
(1) Mtengo wa kuwala kwa dzuwa komwe kumayamwa kwambiri.
Ma GaAs ndi a III-V pawiri semiconductor zida, ndipo kusiyana kwake kwa mphamvu ndi 1.4eV, komwe kuli mtengo wokha wa kuwala kwa dzuwa, komwe kuli koyenera kufananiza ndi mawonekedwe a solar.
(2) Kutentha kwakukulu kwa kutentha.
Pansi pa 250 ° C, kutembenuka kwa photoelectric kudakali kwabwino kwambiri, ndipo kutembenuka kwake kwapamwamba kwambiri kwazithunzi kumakhala pafupifupi 30%, komwe kumakhala koyenera kwambiri kutentha kwambiri kumayang'ana ma cell a solar.
(3) Mtengo wotsika.
Pogwiritsa ntchito zitsulo za silicon monga magawo, njira ya heteroepitaxial ya teknoloji ya MOCVD ndi njira yodalirika yochepetsera mtengo wa maselo a GaAs.
2. Kuipa kwa maselo a dzuwa opyapyala
(1) Zosavuta kudya.
Kukula kwa ma cell a solar amtundu wopyapyala kumatsimikizira kuti ma cell a solar amtundu wowonda kwambiri amakhala odekha, kotero kukana kwamadzi kwa zinthu zomwe zili ndi fluorine zomwe zimafunikira kuti zitsekere ma cell a solar amtundu wa 9 nthawi yamphamvu kuposa ma crystalline silicon cell.
(2) Photoinduced attenuation.
The attenuation wa woonda-filimu maselo dzuwa ndi pafupifupi 30%.
(3) Kuthekera kosinthika kwa ma cell a solar amafilimu ocheperako ndikotsika.
Chifukwa cha kutembenuka kwakukulu kwa maselo a dzuwa a nembanemba, ambiri aiwo amangowoneka muzinthu zazing'ono komanso zosinthika zamagetsi.
(4) Cadmium telluride muzinthu zopangira ndi chinthu chapoizoni.
Cadmium ndi chinthu chapoizoni kwambiri chomwe chimaunjikana muzakudya ngati mercury, zomwe zimasemphana ndi lingaliro lakukhala wokonda zachilengedwe, wotetezeka komanso wopanda poizoni. Mabungwe ambiri ndi ma laboratories akuyang'ana njira zina zokondera zachilengedwe, zogwira ntchito kwambiri, ndipo opanga ma solar akufufuza njira zopezera ndi kubwezeretsanso zida zomwe zili ndi cadmium kuti athetse mavuto a chilengedwe.
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