Ukadaulo Wophimba Ma Calcitonite Solar Cells

Mu 2009, pamene maselo a calcite thin-film anayamba kuonekera, mphamvu yosinthira inali 3.8% yokha, ndipo inawonjezeka mofulumira kwambiri, Unit 2018, mphamvu ya labotale yapitirira 23%. Fomula yoyambira ya molekyulu ya chalcogenide compound ndi ABX3, ndipo malo a A nthawi zambiri amakhala ion yachitsulo, monga Cs+ kapena Rb+, kapena gulu la organic functional. Monga (CH3NH3;), [CH (NH2)2]+; Malo a B nthawi zambiri amakhala ma divalent cations, monga ma Pb2+ ndi ma Sn2+ ions; Malo a X nthawi zambiri amakhala ma halogen anions, monga Br-, I-, Cl-. Posintha zigawo za mankhwala, bandwidth yoletsedwa ya mankhwala a chalcogenide imasinthidwa pakati pa 1.2 ndi 3.1 eV. Kusintha kwamphamvu kwa ma cell a chalcogenide pa ma wavelengths afupiafupi, komwe kumayikidwa pa ma cell omwe ali ndi magwiridwe antchito abwino kwambiri pa ma wavelengths aatali, monga ma cell a silicon a crystalline osiyanasiyana, kungathe kupeza mphamvu yosinthira ya photovoltaic yoposa 30%, kudutsa malire a mphamvu yosinthira ya theoretical ya ma cell a silicon a crystalline ya 29.4%. Mu 2020, batri iyi yolumikizidwa kale yafika kale pa 29.15% mu Berlin Laboratory ya Heimholtz, Germany, ndipo chalcogenide-crystalline silicon Stacked cell imaonedwa kuti ndi imodzi mwamaukadaulo akuluakulu a batri a m'badwo wotsatira.

Gawo la filimu ya chalcogenide linapezeka mwa njira ziwiri: choyamba, mafilimu a Pbl2, ndi CsBr okhala ndi mapokoso anaikidwa pamwamba pa maselo a heterojunction okhala ndi malo osalala mwa kusinthasintha kwa mpweya, kenako n’kuviikidwa ndi yankho la organohalide (FAI, FABr) mwa kupota. Yankho la organic halide limalowa m’mabowo a filimu ya inorganic yomwe imayikidwa ndi nthunzi kenako n’kuchitapo kanthu ndi kuuma pa madigiri 150 Celsius kuti lipange gawo la filimu ya chalcogenide. Kukhuthala kwa filimu ya chalcogenide yomwe inapezeka kunali 400-500 nm, ndipo inalumikizidwa motsatizana ndi selo la heterojunction lomwe lili pansi pake kuti liwongolere kufanana kwa magetsi. Zigawo zoyendera ma electron pa filimu ya chalcogenide ndi LiF ndi C60, zomwe zimapezeka motsatizana ndi kutentha kwa nthunzi, kutsatiridwa ndi atomic layer deposition ya buffer layer, Sn02, ndi magnetron sputtering ya TCO ngati electrode yowonekera kutsogolo. Kudalirika kwa selo lokhala ndi zigawo zambirili kuli bwino kuposa kwa selo la chalcogenide lokhala ndi zigawo ziwiri, koma kukhazikika kwa filimu ya chalcogenide pansi pa mphamvu ya nthunzi ya madzi, kuwala, ndi kutentha kukufunikabe kuwongolera.