Inhibition of Ion Migration for Highly Efficient and Stable Perovskite Solar Cells

Zhong, Yang; Yang, Jia; Liu, Yikun; Cai, Qianqian; Tan, Licheng; Chen, Yiwang

doi:10.1002/adma.202302552

Cited by 49 publications

(14 citation statements)

References 335 publications

(839 reference statements)

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“…[40] All these interactions between TB and perovskite precursor will retard the crystallization process of perovskite film. [12,41] This is expected to greatly improve the performance and stability of PSCs.…”

Section: Resultsmentioning

confidence: 99%

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

Su,

Yu,

Dong

et al. 2023

Advanced Energy Materials

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Wide‐bandgap (WBG) perovskite solar cells (PSCs) have drawn great attention owing to their promising potential for constructing efficient tandem solar cells. However, the rapid crystallization results in poor film properties and easy formation of defects, thereby greatly restricting the acquisition of a small open‐circuit voltage (VOC) deficit due to the severe nonradiative recombination. Herein, it introduced the triethanolamine borate (TB) to effectively slow down the rapid crystallization for preparing highly crystalline and uniform WBG perovskite films with reduced defects. The strong intermolecular interaction (e.g., coordination and hydrogen bond) between TB and perovskite can suppress the halide vacancy formation and inhibit phase segregation for improving long‐term stability. The devices based on a 1.65 eV perovskite absorber achieved a high efficiency of 21.55% with a VOC of 1.24 V, demonstrating the VOC deficit is as low as 0.41 V, which is one of the lowest reports. By combining a semitransparent WBG subcell with a narrow‐bandgap tin‐based PSC, the four‐terminal tandem solar cell delivers a high efficiency of 26.48%.

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Section: Resultsmentioning

confidence: 99%

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

Su,

Yu,

Dong

et al. 2023

Advanced Energy Materials

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“…The presence of mobile ions in metal halide perovskites of different compositions has been well established and linked to hysteresis and device (in)stability. − Although there is still debate about exactly which ions are moving and how high the corresponding mobile ion densities are, − the important role that mobile ions play in PSCs is generally well recognized (Figure ). In addition to causing phase instabilities and chemical decomposition of the perovskite, mobile ions can influence the performance of PSCs by altering their electronic properties.…”

Section: Origins Of Efficiency Lossesmentioning

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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“…Ion migration is a common phenomenon in the entire device of PSC. 83 In particular, atoms or groups in the perovskite at the interface can move in a disordered manner. 84 Numerous studies have demonstrated that ions (such as MA + or I − ) in perovskite materials show a low activation barrier and a modest ionic diffusion coefficient to move within perovskite devices, particularly under external bias or illumination.…”

Section: The Importance Of Interface Engineeringmentioning

confidence: 99%

Key Roles of Interfaces in Inverted Metal-Halide Perovskite Solar Cells

Li,

Wang,

et al. 2024

ACS Nano

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Metal-halide perovskite solar cells (PSCs), an emerging technology for transforming solar energy into a clean source of electricity, have reached efficiency levels comparable to those of commercial silicon cells. Compared with other types of PSCs, inverted perovskite solar cells (IPSCs) have shown promise with regard to commercialization due to their facile fabrication and excellent optoelectronic properties. The interlayer interfaces play an important role in the performance of perovskite cells, not only affecting charge transfer and transport, but also acting as a barrier against oxygen and moisture permeation. Herein, we describe and summarize the last three years of studies that summarize the advantages of interface engineering-based advances for the commercialization of IPSCs. This review includes a brief introduction of the structure and working principle of IPSCs, and analyzes how interfaces affect the performance of IPSC devices from the perspective of photovoltaic performance and device lifetime. In addition, a comprehensive summary of various interface engineering approaches to solving these problems and challenges in IPSCs, including the use of interlayers, interface modification, defect passivation, and others, is summarized. Moreover, based upon current developments and breakthroughs, fundamental and engineering perspectives on future commercialization pathways are provided for the innovation and design of next-generation IPSCs.

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Inhibition of Ion Migration for Highly Efficient and Stable Perovskite Solar Cells

Cited by 49 publications

References 335 publications

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Key Roles of Interfaces in Inverted Metal-Halide Perovskite Solar Cells

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