Kupaka Technology mu Calcitonite Solar Cells

Mu 2009, pamene calcite woonda-filimu maselo anayamba kuonekera bwino kutembenuka anali 3.8% okha, ndipo kuchuluka mofulumira kwambiri, Unit 2018, dzuwa lasayansi ladutsa 23%. The Basic molecular formula of chalcogenide compound ndi ABX3, ndipo A position nthawi zambiri imakhala ion yachitsulo, monga Cs + kapena Rb +, kapena gulu logwira ntchito. Monga (CH3NH3;), [CH (NH2)2]+; B malo nthawi zambiri amakhala divalent cations, monga Pb2+ ndi Sn2+ ions; X udindo nthawi zambiri halogen anions, monga Br-, I-, Cl-. Posintha zigawo zamagulu, bandwidth yoletsedwa ya mankhwala a chalcogenide amatha kusintha pakati pa 1.2 ndi 3.1 eV. Kutembenuka kwamphamvu kwambiri kwa photovoltaic kwa maselo a chalcogenide pazifupi-wavelengths, zomwe zimayikidwa pamwamba pa maselo omwe ali ndi kutembenuka kwapadera pamawonekedwe aatali, monga maselo a crystalline crystalline silicon, amatha kupeza kutembenuka kwa photovoltaic kuposa 30%, kuswa malire a crystal crystal 4. 2020, batire yodzaza iyi yakwanitsa kale kutembenuza 29.15% mu Berlin Laboratory ya Heimholtz, Germany, ndipo cell ya chalcogenide-crystalline silicon Stacked cell imadziwika kuti ndi imodzi mwamakina akuluakulu a batire am'badwo wotsatira.

Chosanjikiza cha filimu ya chalcogenide chinazindikirika ndi njira ziwiri: choyamba, mafilimu a porous Pbl2, ndi CsBr adayikidwa pamwamba pa maselo a heterojunction okhala ndi malo osakanikirana ndi mpweya wofanana, ndiyeno amaphimbidwa ndi yankho la organohalide (FAI, FABr) ndi spin-coating. Njira ya organic halide imalowa m'mabowo a filimu yopangidwa ndi nthunzi yoyikidwa ndi nthunzi kenako imachita ndi kunyezimira pa 150 digiri Celsius kupanga wosanjikiza wa filimu ya chalcogenide. Makulidwe a filimu ya chalcogenide yomwe idapezedwa inali 400-500 nm, ndipo idalumikizidwa motsatizana ndi cell yapansi ya heterojunction kuti ikwaniritse zofananira zapano. Zigawo zoyendera ma elekitironi pafilimu ya chalcogenide ndi LiF ndi C60, zopezedwa motsatizana ndi kuyika kwa nthunzi wamafuta, kutsatiridwa ndi kusanjika kwa atomiki kwa wosanjikiza wa buffer, Sn02, ndi sputtering ya magnetron ya TCO ngati electrode yowonekera kutsogolo. Kudalirika kwa selo lodzaza ndi bwino kuposa chalcogenide single-wosayer cell, koma kukhazikika kwa filimu ya chalcogenide pansi pa zochitika zachilengedwe za nthunzi ya madzi, kuwala, ndi kutentha kumafunikabe kuwongolera.