Novel complex oxides as electron transport material for stable halide perovskite solar cells (Conference Presentation)

Monica Lira-Cantu

doi:10.1117/12.2530577

10 September 2019 Novel complex oxides as electron transport material for stable halide perovskite solar cells (Conference Presentation)

Monica Lira-Cantu

Author Affiliations +

Proceedings Volume 11095, Women in Renewable Energy (WiRE); 1109504 (2019) https://doi.org/10.1117/12.2530577
Event: SPIE Organic Photonics + Electronics, 2019, San Diego, California, United States

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.

Conference Presentation

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Monica Lira-Cantu "Novel complex oxides as electron transport material for stable halide perovskite solar cells (Conference Presentation)", Proc. SPIE 11095, Women in Renewable Energy (WiRE), 1109504 (10 September 2019); https://doi.org/10.1117/12.2530577

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KEYWORDS

Solar cells

Ferroelectric materials

Perovskite

Complex oxides

Electron transport

Oxides

Photovoltaics

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