PbZrTiO<sub>3</sub> ferroelectric oxide as an electron extraction material for stable halide perovskite solar cells

Pérez‐Tomás, Amador; Xie, Haibing; Wang, Zaiwei; Kim, Hui‐Seon; Shirley, Ian; Turren‐Cruz, Silver‐Hamill; Morales‐Melgares, Anna; Saliba, Benedicte; Tanenbaum, David M.; Saliba, Michael; Zakeeruddin, Shaik M.; Grätzel, Michaël; Hagfeldt, Anders; Lira‐Cantú, Mónica

doi:10.1039/c8se00451j

Cited by 39 publications

(32 citation statements)

References 53 publications

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“…65 ,) which may thus require UV-blocking layers to become more stable. Recently, PSCs with novel transport layers have been shown to be tolerant to UV irradiation 66,67 . PSC stability may be affected differently by light in the UVA and UVB spectral ranges 68 .…”

Section: Existing Isos Stability Protocolsmentioning

confidence: 99%

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

et al. 2020

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Improving the long-term stability of perovskite solar cells is critical to the deployment of this technology. Despite the great emphasis laid on stability-related investigations, publications lack consistency in experimental procedures and parameters reported. It is therefore challenging to reproduce and compare results and thereby develop a deep understanding of degradation mechanisms. Here, we report a consensus between researchers in the field on procedures for testing perovskite solar cell stability, which are based on the International Summit on Organic Photovoltaic Stability (ISOS) protocols. We propose additional procedures to account for properties specific to PSCs such as ion redistribution under electric fields, reversible degradation and to distinguish ambient-induced degradation from other stress factors. These protocols are not intended as a replacement of the existing qualification standards, but rather they aim to unify the stability assessment and to understand failure modes. Finally, we identify key procedural information which we suggest reporting in publications to improve reproducibility and enable large data set analysis.

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Section: Existing Isos Stability Protocolsmentioning

confidence: 99%

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

et al. 2020

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“…In such arrangements, an often-overlooked property of a ferroelectric semiconductor is that the switchable bipolar surface arrangement also implies a switchable surface band-bending. In a heterojunction (with an oxide absorber or other efficient light harvester), this property is used to define cheap and large area compact self-powered neuromorphic two-terminal solar transistors and thus, paving the way to self-powered neuristors and synaptors [89] , [90] . Oxide thin-films also exhibit other photonic properties with inherent photo-switchable and/or photo-memory features such as persistent photoconductivity [91] , [92] , [93] , [94] , photorefraction [95] , [96] , [97] and other electrooptic phenomena such as the Pockels Effect [98] , [99] .…”

Section: Oxide Photo-resistive Switchingmentioning

confidence: 99%

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Pérez‐Tomás

2019

Adv Materials Inter

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New device concepts and new computing principles are needed to balance our ever-growing appetite for data and information with the realization of the goals of increased energy efficiency, reduction in CO 2 emissions and the circular economy. Neuromorphic or synaptic electronics is an emerging field of research aiming to overcome the current computer's Von-Neumann bottleneck by building artificial neuronal systems to mimic the extremely energy efficient biological synapses. The introduction of photovoltaic and/or photonic aspects into these neuromorphic architectures will produce self-powered adaptive electronics but may also open up new possibilities in artificial neuroscience, artificial neural communications, sensing and machine learning which would enable, in turn, a new era for computational systems owing to the possibility of attaining high bandwidths with much reduced power consumption. This perspective is focused on recent progress in the implementation of functional oxide thinfilms into photovoltaic and neuromorphic applications towards the envisioned goal of selfpowered photovoltaic neuromorphic systems or a solar brain.

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“…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 min after which the device stabilized and then maintained its photovoltaic properties under continuous illumination in air for hours [55,56].…”

Section: Stability Of Other Layers In the Stackmentioning

confidence: 96%

Halide perovskites: current issues and new strategies to push material and device stability

Schileo

Grancini

2020

J. Phys. Energy

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This short review aims at summarizing the current challenges related to poor Perovskite Solar Cells (PSCs) stability which nowadays puts severe constrains on near future device commercialization. As a game changer in the field of photovoltaics (PVs), PSCs are highly efficient and cheap to fabricate. However, they suffer from poor long-term stability upon exposure to heat, moisture, oxygen and light, and combinations thereof. Poor device stability originates from intrinsic instability issues of the perovskite active layer itself, as well as extrinsic factors due to partial degradation of the layers composing the device stack. Here we briefly review the chemical and physical processes responsible for intrinsic material instability, and we highlight possible solutions to overcome it; we then consider the whole device, discussing properties and interactions of the stacked layers. Finally, particular emphasis is placed on the need of shared standards for stability tests, which should include detailed report on experimental conditions over a statistically significant number of samples, allowing for a direct comparison of results across different groups and fostering a rapid advance of our understanding of degradation mechanisms and of the solutions to overcome them.

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PbZrTiO₃ ferroelectric oxide as an electron extraction material for stable halide perovskite solar cells

Abstract: Ferroelectric oxides as new electron extraction layers.

Cited by 39 publications

References 53 publications

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Halide perovskites: current issues and new strategies to push material and device stability

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PbZrTiO3 ferroelectric oxide as an electron extraction material for stable halide perovskite solar cells

Abstract: Ferroelectric oxides as new electron extraction layers.

Cited by 39 publications

References 53 publications

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Halide perovskites: current issues and new strategies to push material and device stability

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Product

Resources

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PbZrTiO₃ ferroelectric oxide as an electron extraction material for stable halide perovskite solar cells