%0 Journal Article %T Zinc oxide as a hole blocking layer for perovskite solar cells deposited in atmospheric conditions %+ Institut de Recherche et Développement sur l'Energie Photovoltaïque (IRDEP) %+ Laboratoire de physique des interfaces et des couches minces [Palaiseau] (LPICM) %+ Simulation et Traitement de l'information pour l'Exploitation des systèmes de Production (EDF R&D STEP) %+ Institut Photovoltaïque d’Ile-de-France (ITE) (IPVF) %+ Laboratoire Innovation en Chimie des Surfaces et NanoSciences (LICSEN UMR 3685) %A Hadouchi, Warda %A Rousset, Jean %A Tondelier, Denis %A Geffroy, Bernard %A Bonnassieux, Yvan %< avec comité de lecture %@ 2046-2069 %J RSC Advances %I Royal Society of Chemistry %V 6 %N 72 %P 67715-67723 %8 2016-07-07 %D 2016 %R 10.1039/c6ra16865e %Z Chemical Sciences/Material chemistryJournal articles %X be Zinc oxide (ZnO) is a widely used transparent conductive oxide owing to its tunable optoelectronic properties, particularly in the field of solar energy conversion. In this study a thin layer of this compound has been employed as a hole-blocking layer in a planar perovskite based solar cell in substitution for the classical titanium dioxide (TiO 2) bilayer. The introduction of intrinsic ZnO between the perovskite layer and the degenerate n-type doped contact leads to a large reduction of the recombination at this interface. Optimization of the ZnO layer properties together with that of the perovskite deposition parameters leads to the measurement of a power conversion efficiency of 14.2% measured at a reverse scan on a 0.175 cm 2 cell. Moreover, the ageing cell performance has been investigated over more than two months for both encapsulated and non-encapsulated devices. When a decrease of the fill factor with time, possibly related to the degradation of the cell contact, is observed, the short circuit current (>18 mA cm À2) and the open circuit (>1 V) potential remain remarkably constant. %G English %L cea-01355276 %U https://cea.hal.science/cea-01355276 %~ CEA %~ X %~ ENSCP %~ CNRS %~ ENSC-PARIS %~ X-PICM %~ X-DEP %~ X-DEP-PHYS %~ PARISTECH %~ LPICM %~ IRDEP %~ PUBNIMBE %~ INC-CNRS %~ IRAMIS-NIMBE %~ CEA-UPSAY %~ PSL %~ UNIV-PARIS-SACLAY %~ CEA-UPSAY-SACLAY %~ X-SACLAY %~ EDF %~ ENSCP-PSL %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE