From Bulk to Surface: Sodium Treatment Reduces Recombination at the Nickel Oxide/Perovskite Interface - Details

author：

Indexed by：

EI Scopus SCIE

Abstract：

The　effect　of　sodium　doping　in　NiO　as　a　contact　layer　for　perovskite　solar　cells　is　investigated.　A　combined　X-ray　diffraction　and　X-ray　photoelectron　spectroscopy　analysis　reveals　that　Na+　mostly　segregates　as　NaOx/NaCl　species　around　NiO　crystallites,　with　the　effect　of　reducing　interface　capacitance　as　revealed　by　impedance　spectroscopy.　Inspired　by　this　finding,　the　NiO/perovskite　interface　in　perovskite　solar　cells　is　modified　via　insertion　of　an　ultrathin　NaCl　interlayer,　which　increases　the　NiO　work-function　by　0.3　eV.　This　leads　to　an　increase　of　power　conversion　efficiency,　approaching　18%,　and　open-circuit　voltage　due　to　a　remarkable　suppression　of　surface　recombination,　as　revealed　by　photoluminescence　analysis　and　light　intensity-dependent　electrical　measurements.

Keyword：

doping interface engineering interface recombination NiO perovskite solar cells

Community：

[ 1 ] [Di Girolamo, Diego]Univ Rome Sapienza, Dept Chem, Piazzale A Moro 5, I-00185 Rome, Italy
[ 2 ] [Dini, Danilo]Univ Rome Sapienza, Dept Chem, Piazzale A Moro 5, I-00185 Rome, Italy
[ 3 ] [Phung, Nga]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 4 ] [Jost, Marko]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 5 ] [Al-Ashouri, Amran]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 6 ] [Chistiakova, Ganna]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 7 ] [Li, Junming]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 8 ] [Marquez, Jose A.]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 9 ] [Unold, Thomas]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 10 ] [Korte, Lars]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 11 ] [Albrecht, Steve]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 12 ] [Abate, Antonio]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany
[ 13 ] [Li, Junming]Fuzhou Univ, Inst Adv Energy Mat, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
[ 14 ] [Abate, Antonio]Fuzhou Univ, Inst Adv Energy Mat, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China
[ 15 ] [Albrecht, Steve]Tech Univ Berlin, Fac Elect Engn & Comp Sci 4, D-10587 Berlin, Germany
[ 16 ] [Di Carlo, Aldo]Univ Roma Tor Vergata, Dept Elect Engn, CHOSE, I-00133 Rome, Italy
[ 17 ] [Di Carlo, Aldo]Natl Univ Sci & Technol NUST MISiS, LASE, Leninskiy Prospect 6, Moscow 119049, Russia
[ 18 ] [Abate, Antonio]Univ Naples Federico II, Dept Chem Mat & Prod Engn, Piazzale Tecchio 80, I-80125 Naples, Italy

Reprint 's Address：

ANTONIO ABATE
[Dini, Danilo]Univ Rome Sapienza, Dept Chem, Piazzale A Moro 5, I-00185 Rome, Italy;;[Abate, Antonio]Helmholtz Zentrum Berlin Mat & Energie, Kekulestr 5, D-12489 Berlin, Germany;;[Abate, Antonio]Fuzhou Univ, Inst Adv Energy Mat, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China;;[Di Carlo, Aldo]Univ Roma Tor Vergata, Dept Elect Engn, CHOSE, I-00133 Rome, Italy;;[Di Carlo, Aldo]Natl Univ Sci & Technol NUST MISiS, LASE, Leninskiy Prospect 6, Moscow 119049, Russia;;[Abate, Antonio]Univ Naples Federico II, Dept Chem Mat & Prod Engn, Piazzale Tecchio 80, I-80125 Naples, Italy

Email：

aldo.dicarlo@uniroma2.it |
danilo.dini@uniroma1.it |
antonio.abate@helmholtz-berlin.de

Show more details

Version：