Zinc oxide as a hole blocking layer for perovskite solar cells deposited in atmospheric conditions

Warda Hadouchi 1, 2 Jean Rousset 3, 4, 1 Denis Tondelier 2, 4 Bernard Geffroy 5, 2 Yvan Bonnassieux 2, 4
1 IRDEP - Institut de Recherche et Développement sur l'Energie Photovoltaïque
2 LPICM - Laboratoire de physique des interfaces et des couches minces [Palaiseau]
3 EDF R&D STEP - Simulation et Traitement de l'information pour l'Exploitation des systèmes de Production
4 IPVF - Institut Photovoltaïque d’Ile-de-France (ITE)
5 LICSEN - Laboratoire Innovation en Chimie des Surfaces et NanoSciences
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
Abstract : 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.
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Journal articles
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https://hal-cea.archives-ouvertes.fr/cea-01355276
Contributor : Serge Palacin <>
Submitted on : Monday, August 22, 2016 - 6:44:33 PM
Last modification on : Wednesday, December 11, 2019 - 10:36:16 AM

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Warda Hadouchi, Jean Rousset, Denis Tondelier, Bernard Geffroy, Yvan Bonnassieux. Zinc oxide as a hole blocking layer for perovskite solar cells deposited in atmospheric conditions. RSC Advances, Royal Society of Chemistry, 2016, 6 (72), pp.67715-67723. ⟨10.1039/c6ra16865e⟩. ⟨cea-01355276⟩

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