Fasahar Rufi a Kwayoyin Hasken Rana na Calcitonite

A shekara ta 2009, lokacin da ƙwayoyin siraran calcite suka fara bayyana ingancin juyawa ya kasance kashi 3.8% kawai, kuma ya ƙaru da sauri, Sashe na 2018, ingancin dakin gwaje-gwaje ya wuce kashi 23%. Tsarin kwayoyin halitta na mahaɗin chalcogenide shine ABX3, kuma matsayin A yawanci ion ne na ƙarfe, kamar Cs+ ko Rb+, ko ƙungiyar aiki ta halitta. Kamar (CH3NH3;), [CH (NH2)2]+; Matsayin B yawanci cations ne na divalent, kamar Pb2+ da Sn2+ ions; Matsayin X yawanci halogen anions ne, kamar Br-, I-, Cl-. Ta hanyar canza abubuwan da ke cikin mahaɗin, ana iya daidaita bandwidth ɗin mahaɗin chalcogenide da aka haramta tsakanin 1.2 da 3.1 eV. Canzawar hasken rana mai inganci ta ƙwayoyin chalcogenide a cikin gajeren zango, wanda aka ɗora a kan ƙwayoyin da ke da kyakkyawan aikin juyawa a tsawon zango mai tsayi, kamar ƙwayoyin silicon na kristal daban-daban, a ka'ida za su iya samun ingancin juyawar hasken rana fiye da 30%, wanda ya karya iyakar ingancin juyawar hasken rana na ƙwayoyin silicon na kristal na 29.4%. A shekarar 2020, wannan batirin da aka tara ya riga ya sami ingancin juyawa na 29.15% a Dakin Gwaji na Berlin na Heimholtz, Jamus, kuma ana ɗaukar ƙwayar chalcogenide-crystalline silicon a matsayin ɗaya daga cikin manyan fasahar batirin ƙarni na gaba.

An gano layin fim ɗin chalcogenide ta hanyar matakai biyu: na farko, an ajiye fina-finan Pbl2, da CsBr masu ramuka a saman ƙwayoyin heterojunction tare da saman laushi ta hanyar tururi, sannan a rufe su da maganin organohalide (FAI, FABr) ta hanyar jujjuyawa. Maganin halide na halitta yana shiga cikin ramukan fim ɗin inorganic da aka ajiye a cikin tururi sannan ya yi aiki da lu'ulu'u a digiri 150 na Celsius don samar da layin fim ɗin chalcogenide. Kauri na fim ɗin chalcogenide da aka samu ta haka shine 400-500 nm, kuma an haɗa shi a jere tare da ƙwayar heterojunction da ke ƙasa don inganta daidaiton yanzu. Layukan jigilar lantarki akan fim ɗin chalcogenide sune LiF da C60, waɗanda aka samu a jere ta hanyar ajiyar tururin zafi, sannan sai a saka Layer na atomic na Layer buffer, Sn02, da kuma magnetron sputtering na TCO a matsayin electrode na gaba mai haske. Ingancin wannan tantanin halitta mai tarin yawa ya fi na tantanin halitta mai layi ɗaya na chalcogenide kyau, amma har yanzu ana buƙatar inganta kwanciyar hankali na fim ɗin chalcogenide a ƙarƙashin tasirin tururin ruwa, haske, da zafi a muhalli.