Dual functionality of charge extraction and interface passivation by self-assembled monolayers in perovskite solar cells

Azam, Muhammad; Du, Tian; Wan, Zhongquan; Zhao, Heng; Zeng, Huaibiao; Wei, Runmin; Brabec, Christoph J.; Luo, Junsheng; Jia, Chunyang

doi:10.1039/d4ee02661f

Energy Environ. Sci.

2024

DOI: 10.1039/d4ee02661f

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Dual functionality of charge extraction and interface passivation by self-assembled monolayers in perovskite solar cells

Muhammad Azam,

Tian Du,

Zhongquan Wan

et al.

Abstract: This review overviews the challenges at the buried interface of PSCs, defect passivation capabilities of SAMs, and its effectiveness compared to other passivating agents.

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Cited by 3 publications

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Optimizing Conjugation of Polymer Hole Transport Materials via Cyclic Alkoxylation for Highly Efficient and Stable Perovskite Solar Cells

Yin,

Luo,

Tang

et al. 2024

Advanced Energy Materials

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Hole transport materials (HTMs) play a crucial role in realizing efficient perovskite solar cells (PSCs), as they improve perovskite affinity and passivation, charge transport and extraction, and ultimately the performance of PSCs. In this study, manipulating the conjugation extension in poly(triaryl amine) (PTAA) derivatives by cyclic alkoxylation of side benzene groups with benzo[d][1,3]dioxole (PTAAO5) and dihydrobenzo[b][1,4]dioxine (PTAAO6) is focused on. PTAAO6 exhibits extended π‐conjugation within the side groups, leading to improved energy level alignment with perovskite and enhanced charge carrier transport compared to both PTAA and PTAAO5. This strong conjugation also promotes interactions between PTAAO6 and the perovskite, resulting in larger grain sizes with reduced defects within the perovskite layer. Therefore, PSCs incorporating PTAAO6 as the HTM achieve an outstanding power conversion efficiency of 25.19%, along with excellent operational stability, retaining 90.2% of the initial PCE after 1000 h under ISOS‐L‐3 testing conditions. These results underscore cyclic alkoxylation as a promising approach for tailoring polymer HTMs and provide crucial insights for designing high‐performance PSCs.

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Optimizing Conjugation of Polymer Hole Transport Materials via Cyclic Alkoxylation for Highly Efficient and Stable Perovskite Solar Cells

Yin,

Luo,

Tang

et al. 2024

Advanced Energy Materials

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Deciphering the Impact of Aromatic Linkers in Self‐Assembled Monolayers on the Performance of Monolithic Perovskite/Si Tandem Photovoltaic

Li,

Chen,

et al. 2024

Angewandte Chemie

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Aromatic linker‐constructed self‐assembled monolayers (Ar‐SAMs) can modulate the work function of indium tin oxide (ITO), thereby improving hole extraction/transport efficiency. However, the specific role of the aromatic linkers between the polycyclic head and the anchoring groups of SAMs in determining the performance of perovskite solar cells (PSCs) remains unclear. In this study, we developed a series of phenothiazine‐based Ar‐SAMs to investigate how different aromatic linkers could affect molecular stacking, the regulation of substrate work function, and charge carrier dynamics. When served as hole‐selective layers (HSLs) in PSCs and monolithic perovskite/silicon tandem solar cells (P/S‐TSCs), we found that the Ar‐SAM with naphthalene linker along the 2,6‐position axis (β‐Nap) could form dense and highly ordered HSLs, enhancing interfacial interactions and favoring optimal energy level alignment with the perovskite films. Using this strategy, the optimized wide‐bandgap PSCs achieved an impressive power conversion efficiency (PCE) of 21.86% with negligible hysteresis, utilizing a 1.68 eV perovskite. Additionally, the encapsulated devices demonstrated enhanced stability under damp‐heat conditions (ISOS‐D‐2, 50% RH, 65°C) with a T91 of 1000 hours. Notably, the fabricated P/S‐TSCs, based on solution‐processed micron‐scale textured silicon heterojunction (SHJ) solar cells, achieved an efficiency of 28.89% with outstanding reproducibility.

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Deciphering the Impact of Aromatic Linkers in Self‐Assembled Monolayers on the Performance of Monolithic Perovskite/Si Tandem Photovoltaic

Li,

Chen,

et al. 2024

Angew Chem Int Ed

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Dual functionality of charge extraction and interface passivation by self-assembled monolayers in perovskite solar cells

Abstract: This review overviews the challenges at the buried interface of PSCs, defect passivation capabilities of SAMs, and its effectiveness compared to other passivating agents.

Cited by 3 publications

References 224 publications

Optimizing Conjugation of Polymer Hole Transport Materials via Cyclic Alkoxylation for Highly Efficient and Stable Perovskite Solar Cells

Optimizing Conjugation of Polymer Hole Transport Materials via Cyclic Alkoxylation for Highly Efficient and Stable Perovskite Solar Cells

Deciphering the Impact of Aromatic Linkers in Self‐Assembled Monolayers on the Performance of Monolithic Perovskite/Si Tandem Photovoltaic

Deciphering the Impact of Aromatic Linkers in Self‐Assembled Monolayers on the Performance of Monolithic Perovskite/Si Tandem Photovoltaic

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