Poly(3,4-Ethylenedioxythiophene) as a Hole-Transport Layer for Highly Efficient and Stable Inverted Perovskite Solar Cells

Gu, Wei-Min; Jiang, Ke-Jian; Jiao, Xinning; Wu, Limei; Gao, Cai-Yan; Fan, Xin-Heng; Yang, Lian-Ming; Wang, Qing; Song, Yanlin

doi:10.1016/j.cej.2024.149512

Chemical Engineering Journal

2024

DOI: 10.1016/j.cej.2024.149512

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Poly(3,4-Ethylenedioxythiophene) as a Hole-Transport Layer for Highly Efficient and Stable Inverted Perovskite Solar Cells

Wei-Min Gu,

Ke-Jian Jiang,

Xinning Jiao

et al.

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2024

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Cited by 9 publications

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Perovskite Solar Cells: Challenges Facing Polymeric Hole Selective Materials in p–i–n Configuration

Ganesan,

Nazeeruddin,

Gao

2024

Adv Funct Materials

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Polymeric hole‐selective materials (P‐HSMs) offer advantages like solution processability, tunable energy levels, and improved mechanical stability, making them suitable for large‐scale and flexible substrates. Poly[bis(4‐phenyl) (2,4,6‐trimethylphenyl) amine] (PTAA) based p–i–n perovskite solar cells exhibit promising power conversion efficiency (PCE), but wettability, dopant, and cost challenges necessitate the development of advanced next‐generation P‐HSMs. To provide a clear understanding of the structural property with photovoltaic performance, this review classifies such newly developed P‐HSMs into five distinct structural categories. Specifically, this review discusses the current status, advancements, challenges, and prospects in structural design and synthetic variations, focusing on enhancing photovoltaic performance, wettability, mitigating surface defects, and stability. Notably, incorporating polar units into P‐HSMs enhances wettability and mitigates ion instabilities and uncoordinated lead defects. Promising structural designs like polymeric self‐assembled monolayers and in situ polymerized hole‐selective materials are examined. Despite performance advancements, emerging, P‐HSMs face significant challenges such as limited thermal stress analysis (55–85 °C) and scalability restricted to small‐scale devices. To bridge this gap, this review emphasizes the urgent need for prioritizing thermal stability testing and large‐scale device fabrication in future research, paving the way for commercial viability of P‐HSMs in p–i–n perovskite photovoltaics.

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Perovskite Solar Cells: Challenges Facing Polymeric Hole Selective Materials in p–i–n Configuration

Ganesan,

Nazeeruddin,

Gao

2024

Adv Funct Materials

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2,2′‐Bipyridyl‐4,4′‐Dicarboxylic Acid Modified Buried Interface of High‐Performance Perovskite Solar Cells

Zhao,

Gu,

Jiang

et al. 2024

Angewandte Chemie

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The regulation of interfaces remains a critical and challenging aspect in the pursuit of highly efficient and stable perovskite solar cells (PSCs). Here, 2,2′‐bipyridyl‐4,4′‐dicarboxylic acid (HBPDC) is incorporated as an interfacial layer between SnO2 and perovskite layers in PSCs. The two carboxylic acid moieties on HBPDC bind to SnO2 through esterification, while its nitrogen atoms, possessing lone electron pairs, interact with uncoordinated lead (Pb2+) atoms through Lewis acid‐base interactions. This dual functionality enables simultaneous passivation of surface defects on both the SnO2 and buried perovskite layers. In addition, the electron‐deficient nature of HBPDC enhances interfacial energy band alignment and facilitates electron transfer from the perovskite to SnO2. Furthermore, the incorporation of HBPDC strengthens the interfacial adhesion, improving mechanical reliability. As a result, the PSCs exhibited an impressive power conversion efficiency (PCE) of 25.41% under standard AM 1.5G conditions, along with remarkable environmental stability.

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2,2′‐Bipyridyl‐4,4′‐Dicarboxylic Acid Modified Buried Interface of High‐Performance Perovskite Solar Cells

Zhao,

Gu,

Jiang

et al. 2024

Angew Chem Int Ed

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Poly(3,4-Ethylenedioxythiophene) as a Hole-Transport Layer for Highly Efficient and Stable Inverted Perovskite Solar Cells

Cited by 9 publications

References 45 publications

Perovskite Solar Cells: Challenges Facing Polymeric Hole Selective Materials in p–i–n Configuration

Perovskite Solar Cells: Challenges Facing Polymeric Hole Selective Materials in p–i–n Configuration

2,2′‐Bipyridyl‐4,4′‐Dicarboxylic Acid Modified Buried Interface of High‐Performance Perovskite Solar Cells

2,2′‐Bipyridyl‐4,4′‐Dicarboxylic Acid Modified Buried Interface of High‐Performance Perovskite Solar Cells

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