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Proceedings Paper

Novel complex oxides as electron transport material for stable halide perovskite solar cells (Conference Presentation)
Author(s): Monica Lira-Cantu

Paper Abstract

Here we report the fabrication and lifetime analysis of PSCs applying a thin film of Pb[ZrxTi1-x]O3 (PZT) ferroelectric oxide as the ETM. The PZT was made as dense thin film and applied in planar configuration PSCs of the type: FTO/PZT/CsMAFA/ spiro-OMeTAD/Au, where CsMAFA refers to the halide perovskite material with formula Cs5(MA0.17FA0.83)(95)Pb(I0.83Br0.17)3 and PZT refers to the nominal composition Pb[Zr0.6Ti0.4]O3. For comparison purposes, reference solar cells were made applying SnO2 as dense ETM as in FTO/SnO2/CsMAFA/spiro-OMeTAD/ Au. We also explored the effect of the PZT layer on the triple cation perovskite under illumination with respect to solar cell stability. Analysis of the solar cells were made at 1-sun AM 1.5 G, including UV light, in air (no encapsulation), at 45 ºC and 55% RH. The solar cells were poled up to 2 V in order to polarize the PZT electrode. Poling resulted in a slow but steady improvement of the photovoltaic properties of the PZT-based PSC. The improvement was observed during the first 90 minutes after which the device stabilized and then maintained its photovoltaic properties under continuous illumination in air for hours. Our results demonstrate, for the first time, the possibility of applying the PZT ferroelectric oxide as ETM in air and UV-stable PSCs.

Paper Details

Date Published: 10 September 2019
Proc. SPIE 11095, Women in Renewable Energy (WiRE), 1109504 (10 September 2019); doi: 10.1117/12.2530577
Show Author Affiliations
Monica Lira-Cantu, Institut Català de Nanociència i Nanotecnologia (ICN2) (Spain)

Published in SPIE Proceedings Vol. 11095:
Women in Renewable Energy (WiRE)
Monica Lira-Cantu; Zakya H. Kafafi, Editor(s)

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