A review on organic hole transport materials for perovskite solar cells: Structure, composition and reliability

Zhang, Cuiping; Wei, Kun; Hu, Jianfei; Cai, Xuanyi; Du, Guozheng; Deng, Jidong; Luo, Zhide; Zhang, Xiaoli; Wang, Yang; Yang, Li; Zhang, J.

doi:10.1016/j.mattod.2023.06.009

Cited by 35 publications

(12 citation statements)

References 282 publications

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“…[4][5][6] HTMs as an integral part between the electrode and perovskite layer in PSC devices play a critical role in the transporting and extraction of photo-generated carriers, and the protection of the perovskite. [7][8][9] Therefore, rational design of HTMs can signicantly enhance the performance of PSCs.…”

Section: Introductionmentioning

confidence: 99%

Modulation of intermolecular interactions in hole transporting materials for improvement of perovskite solar cell efficiency: a strategy of trifluoromethoxy isomerization

Qi,

Wang,

Chen

et al. 2024

J. Mater. Chem. A

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Section: Introductionmentioning

confidence: 99%

Modulation of intermolecular interactions in hole transporting materials for improvement of perovskite solar cell efficiency: a strategy of trifluoromethoxy isomerization

Qi,

Wang,

Chen

et al. 2024

J. Mater. Chem. A

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“…Apparently, the optical-electrical properties of PEDOT:PSS are essential for efficient Sn-Pb PSCs. Notably, the surface characteristics of HTLs likely regulate the perovskite growth ( 32 , 37 ). However, the detailed study on such as whether and how PEDOT:PSS affects the growth process of Sn-Pb perovskites and the performance of LBG PSCs and all-perovskite tandems is lacking, and the underlying mechanism remains uncovered.…”

Section: Introductionmentioning

confidence: 99%

Custom-tailored hole transport layer using oxalic acid for high-quality tin-lead perovskites and efficient all-perovskite tandems

Zhu,

Xu,

Luo

et al. 2024

Sci. Adv.

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All-perovskite tandem solar cells (TSCs) have exhibited higher efficiencies than single-junction perovskite solar cells (PSCs) but still suffer from the unsatisfactory performance of low-bandgap (LBG) tin-lead (Sn-Pb) subcells. The inherent properties of PEDOT:PSS are crucial to high-performance Sn-Pb perovskite films and devices; however, the underlying mechanism has not been fully explored and revealed. Here, we report a facile oxalic acid treatment of PEDOT:PSS (OA-PEDOT:PSS) to precisely regulate its work function and surface morphology. OA-PEDOT:PSS shows a larger work function and an ordered reorientation and fiber-shaped film morphology with efficient hole transport pathways, leading to the formation of more ideal hole-selective contact with Sn-Pb perovskite for suppressing interfacial nonradiative recombination losses. Moreover, OA-PEDOT:PSS induces (100) preferred orientation growth of perovskite for higher-quality Sn-Pb films. Last, the OA-PEDOT:PSS–tailored LBG PSC yields an impressive efficiency of up to 22.56% (certified 21.88%), enabling 27.81% efficient all-perovskite TSC with enhanced operational stability.

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“…24 To mitigate potential damage to the perovskite layer and eliminate dependence on dopants, the development of alternative HTMs with efficient electronic properties that do not require these additives is highly desirable for PSC applications. 25,26 In this context, our research group introduced FU7 as the first fullerene-based HTM that exhibited substantial hole mobility and suitable energy alignment with the perovskite layer without doping. 27 The chemical structure of FU7 consisted of a hexakis-C 60 core and 12 methoxy-terminated π-extended triarylamine units.…”

Section: Introductionmentioning

confidence: 99%

Photo-Cross-Linked Fullerene-Based Hole Transport Material for Moisture-Resistant Regular Fullerene Sandwich Perovskite Solar Cells

Cabrera-Espinoza,

Collavini,

Sánchez

et al. 2024

ACS Appl. Mater. Interfaces

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Despite the high efficiencies currently achieved with perovskite solar cells (PSCs), the need to develop stable devices, particularly in humid conditions, still remains. This study presents the synthesis of a novel photo-cross-linkable fullerene-based hole transport material named FT 12 . For the first time, the photo-crosslinking process is applied to PSCs, resulting in the preparation of photo-cross-linked FT 12 (PCL FT 12 ). Regular PSCs based on C 60sandwich architectures were fabricated using FT 12 and PCL FT 12 as dopant-free hole transport layers (HTLs) and compared to the reference spiro-OMeTAD. The photovoltaic results demonstrate that both FT 12 and PCL FT 12 significantly outperform pristine spiro-OMeTAD regarding device performance and stability. The comparison between devices based on FT 12 and PCL FT 12 demonstrates that the photo-cross-linking process enhances device efficiency. This improvement is primarily attributed to enhanced charge extraction, partial oxidation of the HTL, increased hole mobility, and improved layer morphology. PCL FT 12 -based devices exhibit improved stability compared to FT 12 devices, primarily due to the superior moisture resistance achieved through photo-cross-linking.

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A review on organic hole transport materials for perovskite solar cells: Structure, composition and reliability

Cited by 35 publications

References 282 publications

Modulation of intermolecular interactions in hole transporting materials for improvement of perovskite solar cell efficiency: a strategy of trifluoromethoxy isomerization

Modulation of intermolecular interactions in hole transporting materials for improvement of perovskite solar cell efficiency: a strategy of trifluoromethoxy isomerization

Custom-tailored hole transport layer using oxalic acid for high-quality tin-lead perovskites and efficient all-perovskite tandems

Photo-Cross-Linked Fullerene-Based Hole Transport Material for Moisture-Resistant Regular Fullerene Sandwich Perovskite Solar Cells

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