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：

doping; interface engineering; interface recombination; NiO; perovskite solar cells

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[ 1 ] [Di Girolamo, D.]Department of Chemistry, University of Rome “Sapienza”, Piazzale A. Moro 5, Rome, 00185, Italy
[ 2 ] [Phung, N.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 3 ] [Jošt, M.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 4 ] [Al-Ashouri, A.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 5 ] [Chistiakova, G.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 6 ] [Li, J.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 7 ] [Li, J.]State Key Laboratory of Photocatalysis on Energy and Environment Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian 350002, China
[ 8 ] [Márquez, J.A.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 9 ] [Unold, T.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 10 ] [Korte, L.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 11 ] [Albrecht, S.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 12 ] [Albrecht, S.]Faculty IV – Electrical Engineering and Computer Science, Technical University Berlin, Berlin, 10587, Germany
[ 13 ] [Di Carlo, A.]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, A.]L.A.S.E – Laboratory of Advanced Solar Energy, National University of Science and Technology NUST-MISiS, Leninskiy prospect 6, Moscow, 119049, Russian Federation
[ 15 ] [Dini, D.]Department of Chemistry, University of Rome “Sapienza”, Piazzale A. Moro 5, Rome, 00185, Italy
[ 16 ] [Abate, A.]Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstraße 5, Berlin, 12489, Germany
[ 17 ] [Abate, A.]State Key Laboratory of Photocatalysis on Energy and Environment Institute of Advanced Energy Materials, Fuzhou University, Fuzhou, Fujian 350002, China
[ 18 ] [Abate, A.]Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale Tecchio 80, Naples, Fuorigrotta 80125, Italy

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aldo.dicarlo@uniroma2.it

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Source ：

Advanced Materials Interfaces

ISSN： 2196-7350

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

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WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 5

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