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

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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.　©　2019　WILEY-VCH　Verlag　GmbH　&　Co.　KGaA,　Weinheim

Keyword：

Capacitance Cell engineering Crystallites Doping (additives) Nickel oxide Open circuit voltage Perovskite Perovskite solar cells Sodium Sodium chloride Sodium metallography Surface treatment X ray photoelectron spectroscopy

Community：

[ 1 ] [Di Girolamo, Diego]Department of Chemistry, University of Rome 'Sapienza', Piazzale A. Moro 5, Rome; 00185, Italy
[ 2 ] [Phung, Nga]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 3 ] [Jot, Marko]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 4 ] [Al-Ashouri, Amran]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 5 ] [Chistiakova, Ganna]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 6 ] [Li, Junming]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 7 ] [Li, Junming]State Key Laboratory of Photocatalysis on Energy and Environment Institute of Advanced Energy Materials, Fuzhou University, Fuzhou; Fujian; 350002, China
[ 8 ] [Márquez, José A.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 9 ] [Unold, Thomas]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 10 ] [Korte, Lars]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 11 ] [Albrecht, Steve]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 12 ] [Albrecht, Steve]Faculty IV – Electrical Engineering and Computer Science, Technical University Berlin, Berlin; 10587, Germany
[ 13 ] [Di Carlo, Aldo]C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome-Tor Vergata, Rome; 00133, Italy
[ 14 ] [Di Carlo, Aldo]L.A.S.E – Laboratory of Advanced Solar Energy, National University of Science and Technology NUST-MISiS, Leninskiy prospect 6, Moscow; 119049, Russia
[ 15 ] [Dini, Danilo]Department of Chemistry, University of Rome 'Sapienza', Piazzale A. Moro 5, Rome; 00185, Italy
[ 16 ] [Abate, Antonio]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin; 12489, Germany
[ 17 ] [Abate, Antonio]State Key Laboratory of Photocatalysis on Energy and Environment Institute of Advanced Energy Materials, Fuzhou University, Fuzhou; Fujian; 350002, China
[ 18 ] [Abate, Antonio]Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale Tecchio 80, Naples; Fuorigrotta; 80125, Italy

Reprint 's Address：

[di carlo, aldo]l.a.s.e – laboratory of advanced solar energy, national university of science and technology nust-misis, leninskiy prospect 6, moscow; 119049, russia;;[di carlo, aldo]c.h.o.s.e. (centre for hybrid and organic solar energy), department of electronic engineering, university of rome-tor vergata, rome; 00133, italy

Email：

aldo.dicarlo@uniroma2.it

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Source ：

Advanced Materials Interfaces

Year： 2019

Issue： 17

Volume： 6

4 . 9 4 8

JCR@2019

4 . 3 0 0

JCR@2023

ESI HC Threshold：236

JCR Journal Grade：1

CAS Journal Grade：3

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 1

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