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Issue 72, 2016, Issue in Progress
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Zinc oxide as a hole blocking layer for perovskite solar cells deposited in atmospheric conditions

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Abstract

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 (TiO2) 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 cm2 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−2) and the open circuit (>1 V) potential remain remarkably constant.

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

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Publication details

The article was received on 30 Jun 2016, accepted on 01 Jul 2016 and first published on 07 Jul 2016


Article type: Paper
DOI: 10.1039/C6RA16865E
Citation: RSC Adv., 2016,6, 67715-67723
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    Zinc oxide as a hole blocking layer for perovskite solar cells deposited in atmospheric conditions

    W. Hadouchi, J. Rousset, D. Tondelier, B. Geffroy and Y. Bonnassieux, RSC Adv., 2016, 6, 67715
    DOI: 10.1039/C6RA16865E

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