Prospects for Tin-Containing Halide Perovskite Photovoltaics

Hu, Shuaifeng; Smith, Joel A.; Snaith, Henry J.; Wakamiya, Atsushi

doi:10.1021/prechem.3c00018

Cited by 9 publications

(11 citation statements)

References 179 publications

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“…Al 2 O 3 nanoparticles ,, and/or some ammonium salts as a wetting layer, or 1,6-hexylenediphosphonic acid (6dPA) as a second component to the SAM precursor solution, can be implemented to overcome this wettability issue, enabling solar cells with improved efficiency and reproducibility as well as alleviated film delamination. Thus, an improved understanding of SAM processing, especially the impact from the processing solvent, and the surface chemistry, alongside the design of new versatile and processing-tolerant SAMs, will be key to aiding the community to reach the next milestone on both cell efficiency and reliability . To further simplify the PSCs processing, codeposition of the hole-selective contact and the perovskite absorber would be worth investigating in future work.…”

Section: Interface Engineering For Solar Cellsmentioning

confidence: 99%

Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Hu,

Thiesbrummel,

Pascual

et al. 2024

Chem. Rev.

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All-perovskite tandem solar cells are attracting considerable interest in photovoltaics research, owing to their potential to surpass the theoretical efficiency limit of single-junction cells, in a cost-effective sustainable manner. Thanks to the bandgap-bowing effect, mixed tin−lead (Sn−Pb) perovskites possess a close to ideal narrow bandgap for constructing tandem cells, matched with wide-bandgap neat lead-based counterparts. The performance of all-perovskite tandems, however, has yet to reach its efficiency potential. One of the main obstacles that need to be overcome is theoftentimeslow quality of the mixed Sn−Pb perovskite films, largely caused by the facile oxidation of Sn(II) to Sn(IV), as well as the difficult-to-control film crystallization dynamics. Additional detrimental imperfections are introduced in the perovskite thin film, particularly at its vulnerable surfaces, including the top and bottom interfaces as well as the grain boundaries. Due to these issues, the resultant device performance is distinctly far lower than their theoretically achievable maximum efficiency. Robust modifications and improvements to the surfaces of mixed Sn−Pb perovskite films are therefore critical for the advancement of the field. This Review describes the origins of imperfections in thin films and covers efforts made so far toward reaching a better understanding of mixed Sn−Pb perovskites, in particular with respect to surface modifications that improved the efficiency and stability of the narrow bandgap solar cells. In addition, we also outline the important issues of integrating the narrow bandgap subcells for achieving reliable and efficient all-perovskite double-and multi-junction tandems. Future work should focus on the characterization and visualization of the specific surface defects, as well as tracking their evolution under different external stimuli, guiding in turn the processing for efficient and stable single-junction and tandem solar cell devices.

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Section: Interface Engineering For Solar Cellsmentioning

confidence: 99%

Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Hu,

Thiesbrummel,

Pascual

et al. 2024

Chem. Rev.

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“…With Pb content, there is better control of the film growth dynamics. [231] B-site modulated perovskite film has a medium crystallization rate which could minimize nonuniform film growth. Considering the tendency of Sn-HP to undergo oxidation, which can lead to increased defects and instability, it has been found that maintaining an Sn content of %50% is optimal for improving the quality and stability of perovskite films.…”

Section: B-site Modulated: Pb/sn/ge-based Hpscsmentioning

confidence: 99%

Advancing Efficiency and Stability of Lead, Tin, and Lead/Tin Perovskite Solar Cells: Strategies and Perspectives

Khadka,

Shirai,

Yanagida

et al. 2023

Solar RRL

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Halide‐perovskite‐based solar cells (HPSCs) have established themselves as a promising photovoltaic (PV) technology in a remarkably short time. The rapid improvement in HPSCs can be attributed to the unique material and optoelectronic properties of metal halide perovskite semiconductors coupled with a very knowledgeable and experienced PV community. This review briefly summarizes the chemistry of halide perovskites, delving into the fundamental aspects of crystal structure and optical bandgap, followed by a more in‐depth report on the advancements in HPSCs efficiencies, thanks to structural regulation, interfacial modulation, and thin‐film engineering. It is mainly focused on three metal halide perovskites topics: 1) high‐performance Pb‐based perovskites, 2) Sn‐based perovskites and their associated challenges, and 3) emerging work on mixed composition Pb–Sn perovskites. For each of these domains, the effects stemming from the tuning of the monovalent A‐site and the halide site are examined. Additionally, various approaches aimed at passivating defects in the bulk film and at the interface, along with carrier transport engineering, are discussed. The discussions also encompass the broader implications for device performance, stability, and material toxicity. Finally, perspectives on the future directions and the commercial feasibility of perovskite photovoltaic technologies are provided.

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“…[11][12][13] However, the ever-achieved PCE of SnÀ Pb mixed PSCs (the highest efficiency < 24 %) is still far lower than the idealized efficiency and even much lower than that of pure Pb-based counterpart. [14][15][16][17][18][19][20][21][22][23][24] There are mainly three factors influence the photovoltaic performance of SnÀ Pb mixed PSCs: 1) the oxidation of Sn 2 + even under a low oxygen concentration environment, resulting in the formation of Sn vacancies; [25][26][27][28] 2) morphological inhomogeneity of bimetallic cation (Pb 2 + and Sn 2 + ) perovskite films; 3) extennsive nonradiative recombination induced by both bulk and surface defects.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Stable Tin‐Lead Mixed Perovskite Solar Cells Using Post‐Treatment Additive with Synergistic Effects

Ding,

Yan,

Chen

et al. 2024

Angew Chem Int Ed

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Inhibiting the oxidation of Sn2+ during the crystallization process of Sn‐Pb mixed perovskite is found to be as important as the oxidation resistance of precursor solution to achieve high efficiency, but less investigated. Considering the excellent reduction feature of hydroquinone and the hydrophobicity of tert‐butyl group, an antioxidant 2,5‐di‐tert‐butylhydroquinone (DBHQ) was introduced into Sn‐Pb mixed perovskite films using an anti‐solvent approach. Interestingly, we find that DBHQ can act as function alterable additive during its utilization. On the one hand, DBHQ can restrict the oxidation of Sn2+ during the crystallization process, facilitating the fabrication of high‐quality perovskite film; on the other hand, the generated oxidation product 2,5‐di‐tert‐butyl‐1,4‐benzoquinone (DBBQ) can functionalize as defect passivator to inhibit the charge recombination. As a result, this synergetic effect renders the Sn‐Pb mixed PSC a power conversion efficiency (PCE) up to 23.0%, which is significantly higher than the reference device (19.6%). Furthermore, the unencapsulated DBQH‐modified PSCs exhibited excellent long‐term stability and thermal stability, with the devices maintaining 84.2% and 78.9% of the initial PCEs after aging at 25°C and 60°C for 800 h and 120 h under N2 atmosphere, respectively. Therefore, the functional alterable strategy provides a novel cornerstone for high‐performance Sn‐Pb mixed PSCs.

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Prospects for Tin-Containing Halide Perovskite Photovoltaics

Cited by 9 publications

References 179 publications

Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Advancing Efficiency and Stability of Lead, Tin, and Lead/Tin Perovskite Solar Cells: Strategies and Perspectives

Efficient and Stable Tin‐Lead Mixed Perovskite Solar Cells Using Post‐Treatment Additive with Synergistic Effects

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