Ngo-2009, xa iiseli ze-calcite thin-film zaqala ukubonakala, ukusebenza kakuhle kokuguqulwa kwakuyi-3.8% kuphela, kwaye kwanda ngokukhawuleza kakhulu, kwiYunithi ka-2018, ukusebenza kakuhle kwelebhu kudlule i-23%. Ifomula esisiseko yemolekyuli yekhompawundi ye-chalcogenide yi-ABX3, kwaye isikhundla se-A sidla ngokuba yi-ion yesinyithi, njenge-Cs+ okanye i-Rb+, okanye iqela elisebenzayo le-organic. Ezifana ne-(CH3NH3;), [CH (NH2)2]+; isikhundla se-B sidla ngokuba zii-cations ezidityanisiweyo, ezifana ne-Pb2+ kunye ne-Sn2+ ions; isikhundla se-X sidla ngokuba zii-halogen anions, ezifana ne-Br-, I-, Cl-. Ngokutshintsha izinto zeekhompawundi, i-bandwidth engavumelekanga yeekhompawundi ze-chalcogenide inokulungiswa phakathi kwe-1.2 kunye ne-3.1 eV. Ukuguqulwa kwe-photovoltaic esebenza kakuhle kakhulu kweeseli ze-chalcogenide kubude obufutshane, obubekwe phezu kweeseli ezisebenza kakuhle kakhulu kubude obude, njengeeseli ze-silicon ze-crystalline ezahlukeneyo, zinokufumana ukusebenza kakuhle kokuguqulwa kwe-photovoltaic okungaphezulu kwe-30%, zigqitha umda wokusebenza kakuhle kokuguqulwa kweeseli ze-silicon ze-crystalline ze-29.4%. Ngo-2020, le bhetri idibeneyo sele ifikelele ekusebenzeni kakuhle kokuguqulwa kwe-29.15% kwiBerlin Laboratory yaseHeimholtz, eJamani, kwaye i-chalcogenide-crystalline silicon Iseli edibeneyo ithathwa njengenye yezona teknoloji ziphambili zebhetri zesizukulwana esilandelayo.
Umaleko wefilimu ye-chalcogenide waqatshelwa ngendlela enamanyathelo amabini: okokuqala, iifilimu ze-Pbl2, kunye ne-CsBr ezineembobo zabekwa phezu kweeseli ze-heterojunction ezineendawo ezithambileyo ngokufudumeza, zaza zagqunywa ngesisombululo se-organohalide (FAI, FABr) ngokugquma. Isisombululo se-organic halide singena kwiimbobo zefilimu ye-inorganic efakwe ngumphunga size siphendule kwaye siqine kwi-150 degrees Celsius ukuze senze umaleko wefilimu ye-chalcogenide. Ubukhulu befilimu ye-chalcogenide efunyenweyo yayiyi-400-500 nm, kwaye yadibaniswa ngokulandelelana neseli ye-heterojunction engaphantsi ukuze kuphuculwe ukufana kwamanje. Iileya zothutho lwe-electron kwifilimu ye-chalcogenide yi-LiF kunye ne-C60, ezifunyenwe ngokulandelelana ngokufumba komphunga wobushushu, kulandele ukufumba komaleko we-atomic komaleko we-buffer, i-Sn02, kunye nokutshiza kwe-magnetron kwe-TCO njenge-electrode engaphambili ebonakalayo. Ukuthembeka kwale seli idibeneyo kungcono kunokweseli ye-chalcogenide enomgangatho omnye, kodwa ukuzinza kwefilimu ye-chalcogenide phantsi kwempembelelo yokusingqongileyo yomphunga wamanzi, ukukhanya, kunye nobushushu kusafuneka kuphuculwe.
Ixesha lokuthumela: Okthobha-20-2023