Forming a composite electron blocking layer to enhance the performance of carbon-based CsPbI<sub>3</sub> perovskite solar cells

Song, Yongfa; Li, Weiping; Wang, Hailiang; Liu, Huicong; Deng, Yue; Zhang, Qixian; Rao, Hanbing; Jiang, Xiaoyu; Chen, Haining

doi:10.1039/d2qm01124g

Mater. Chem. Front.

2023

DOI: 10.1039/d2qm01124g

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Forming a composite electron blocking layer to enhance the performance of carbon-based CsPbI₃ perovskite solar cells

Yongfa Song

Weiping Li

Hailiang Wang

et al.

Abstract: Carbon-based CsPbI3 perovskite solar cells (C-PSCs) have attracted much interests due to the high chemical stability. However, their efficiency still largely lags behind those achieved by conventional CsPbI3 PSCs because...

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2024

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All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

Shen,

Ye,

Yang

et al. 2024

Advanced Materials

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All‐inorganic perovskite solar cells (PSCs), such as CsPbX3, have garnered considerable attention recently, as they exhibit superior thermodynamic and optoelectronic stabilities compared to the organic‐inorganic hybrid PSCs. However, the power conversion efficiency (PCE) of CsPbX3 PSCs is generally lower than that of organic‐inorganic hybrid PSCs, as they contain higher defect densities at the interface and within the perovskite light‐absorbing layers, resulting in higher non‐radiative recombination and voltage loss. Consequently, defect regulation has been adopted as an important strategy to improve device performance and stability. This review aims to comprehensively summarize recent progresses on the defect regulation in CsPbX3 PSCs, as well as their cutting‐edge applications in extreme scenarios. We first discuss the underlying fundamental mechanisms leading to the defect formation in the crystal structure of CsPbX3 PSCs, and provide an overview of literature‐adopted defect regulation strategies in the context of interface, internal, and surface engineering. Cutting‐edge applications of CsPbX3 PSCs in extreme environments such as outer space and underwater situations are highlighted. Finally, a summary and outlook are presented on future directions for achieving higher efficiencies and superior stability in CsPbX3 PSCs.This article is protected by copyright. All rights reserved

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All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

Shen,

Ye,

Yang

et al. 2024

Advanced Materials

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Stability Strategies and Applications of Iodide Perovskites

Lei,

Zhang,

Huo

et al. 2024

Small

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Iodide perovskites have demonstrated their unprecedented high efficiency and commercialization potential, and their superior optoelectronic properties, such as high absorption coefficient, high carrier mobility, and narrow direct bandgap, have attracted much attention, especially in solar cells, photodetectors, and light‐emitting diodes (LEDs). However, whether it is organic iodide perovskite, organic–inorganic hybrid iodide perovskite or all‐inorganic iodide perovskite the stability of these iodide perovskites is still poor and the contamination is high. In recent years, scholars have studied more iodide perovskites to improve their stability as well as optoelectronic properties from various angles. This paper systematically reviews the strategies (component engineering, additive engineering, dimensionality reduction engineering, and phase mixing engineering) used to improve the stability of iodide perovskites and their applications in recent years.

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Deploying a Dipole Electric Field at the CsPbI₃ Perovskite/Carbon Interface for Enhancing Hole Extraction and Photovoltaic Performance

Zhang,

Liu,

Wei

et al. 2024

Small

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Carbon‐based CsPbI3 perovskite solar cells without hole transporter (C‐PSCs) have achieved intense attention due to its simple device structure and high chemical stability. However, the severe interface energy loss at the CsPbI3/carbon interface, attributed to the lower hole selectivity for inefficient charge separation, greatly limits device performance. Hence, dipole electric field (DEF) is deployed at the above interface to address the above issue by using a pole molecule, 4‐trifluoromethyl‐Phenylammonium iodide (CF3‐PAI), in which the ─NH3 group anchors on the perovskite surface and the ─CF3 group extends away from it and connects with carbon electrode. The DEF is proven to align with the built‐in electric field, that is pointing toward carbon electrode, which well enhances hole selectivity and charge separation at the interface. Besides, CF3‐PAI molecules also serve as defect passivator for reducing trap state density, which further suppresses defect‐induced non‐radiative recombination. Consequently, the CsPbI3 C‐PSCs achieve an excellent efficiency of 18.33% with a high VOC of 1.144 V for inorganic C‐PSCs without hole transporter.

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Forming a composite electron blocking layer to enhance the performance of carbon-based CsPbI₃ perovskite solar cells

Abstract: Carbon-based CsPbI3 perovskite solar cells (C-PSCs) have attracted much interests due to the high chemical stability. However, their efficiency still largely lags behind those achieved by conventional CsPbI3 PSCs because...

Cited by 5 publications

References 48 publications

All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

Stability Strategies and Applications of Iodide Perovskites

Deploying a Dipole Electric Field at the CsPbI₃ Perovskite/Carbon Interface for Enhancing Hole Extraction and Photovoltaic Performance

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Forming a composite electron blocking layer to enhance the performance of carbon-based CsPbI3 perovskite solar cells

Abstract: Carbon-based CsPbI3 perovskite solar cells (C-PSCs) have attracted much interests due to the high chemical stability. However, their efficiency still largely lags behind those achieved by conventional CsPbI3 PSCs because...

Cited by 5 publications

References 48 publications

All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments

Stability Strategies and Applications of Iodide Perovskites

Deploying a Dipole Electric Field at the CsPbI3 Perovskite/Carbon Interface for Enhancing Hole Extraction and Photovoltaic Performance

Contact Info

Product

Resources

About

Forming a composite electron blocking layer to enhance the performance of carbon-based CsPbI₃ perovskite solar cells

Deploying a Dipole Electric Field at the CsPbI₃ Perovskite/Carbon Interface for Enhancing Hole Extraction and Photovoltaic Performance