Boka reUS-Canadian revasayendisiti rakashandisa Lewis base mamorekuru kuvandudza kufambiswa kwepasi mu perovskite solar cell.Chikwata chakagadzira mudziyo une voltage yakavhurika yedunhu uye mwero wakadzikama unoshamisa.
Chikwata chekuUS-Canada chekutsvagisa chakagadzira inverted perovskitesolar cellnekushandisa Lewis base mamorekuru epasi passivation.Lewis mabhesi anowanzo shandiswa mu perovskite solar tsvagiridzo kuti ipfuure kuremara kwepasi mu perovskite layer.Izvi zvine mhedzisiro yakanaka pakurongeka kwesimba, interfacial recombination kinetics, hysteresis maitiro, uye kugadzikana kwekushanda.
"Lewis basicity, iyo inversely proportional to electronegativity, inotarisirwa kuona simba rinosunga uye kudzikamisa kwenzvimbo uye miganhu yezviyo," masayendisiti akadaro, achiona kuti mamorekuru ainyatso shanda mukugadzira hukama hwakasimba pakati pezvikamu zvemasero pa. iyo interface level."Lewis base molecule ine maatomu maviri ekupa maerekitironi inogona kusunga uye mabhiriji machinjiro uye miganhu yepasi, ichipa mukana wekusimudzira kunamatira uye kusimbisa kuoma kwemagetsi kweperovskite solar maseru."
Masayendisiti akashandisa diphosphine Lewis base molecule inozivikanwa se 1,3-bis(diphenylphosphino) propane (DPPP) kuti ipfuure imwe yeanonyanya kuvimbisa halide perovskites - iyo formamidinium lead iodide inozivikanwa seFAPbI3 - yekushandisa musero inonyudza layer.
Vakaisa perovskite layer pane DPPP-doped hole transport layer (HTL) yakagadzirwa nickel (II) oxide (NiOx).Vakacherechedza kuti mamwe mamolekemu eDPPP akanyungudutswa uye akaparadzaniswa pane zvose perovskite / NiOx interface uye perovskite pamusoro pematunhu, uye kuti crystallinity yefirimu yeperovskite yakavandudzwa.Vati danho iri rinosimudziramechanicalkuoma kweiyo perovskite/NiOx interface.
Vatsvagiri vakavaka sero ne substrate yakagadzirwa negirazi uye tin oxide (FTO), iyo HTL yakavakirwa paNiOx, dhiri remethyl-inotsiva carbazole(Me-4PACz) segomba-yekutakura layer, perovskite layer, nhete ye phenethylammonium iodide (PEAI), electron transport layer yakagadzirwa nebuckminsterfullerene (C60), tin(IV) oxide (SnO2) buffer layer, uye simbi yakaitwa nesirivheri (Ag).
Chikwata chakafananidza mashandiro eDPPP-doped solar cell nereferensi mudziyo usina kupinda mukurapwa.Iyo doped cell yakawana simba rekushandura simba re24.5%, yakavhurika-circuit voltage ye1.16 V uye inozadza chinhu che82%.Chishandiso chisina kuvharwa chakasvika pakubudirira kwe22.6%, yakavhurika-circuit voltage ye1.11 V uye inozadza 79%.
"Kuvandudzwa kwekuzadza chinhu uye kuvhurika-circuit voltage kwakasimbisa kudzikiswa kwehurema paNiOx / perovskite pamberi pekutarisa mushure mekurapwa kweDPPP," masayendisiti akadaro.
Vatsvakurudzi vakavakawo doped cell ine nzvimbo inoshanda ye 1.05 cm2 iyo yakawana shanduko yesimba.kushanda zvakanaka kusvika ku23.9%uye haana kuratidza kuderedzwa mushure me1,500 h.
"NeDPPP, pasi pemamiriro ekunze - ndiko kuti, hapana kuwedzera kupisa - simba rose rekushandurwa kwesero rakagara rakakwirira kwemaawa angangoita 3,500," akadaro muongorori Chongwen Li."Perovskite solar masero akambobudiswa mumabhuku anowanzoona kuderera kukuru mukushanda kwavo mushure me1,500 kusvika kumaawa 2,000, saka uku ndiko kuvandudza kukuru."
Boka iro, iro richango nyorera patent yemaitiro eDPPP, rakapa cell tech mu "Rational dhizaini yeLewis base molecules ye.yakagadzikana uye inobudirira inverted perovskite solar cells,” ichangobva kubudiswa muScience.Chikwata ichi chinosanganisira vadzidzi vepaUniversity yeToronto kuCanada, pamwe nevesainzi vekuUniversity yeToledo, University of Washington, neNorthwestern University muAmerica.
Nguva yekutumira: Feb-27-2023