All-inorganic CsPb1-xSnxI2Br perovskites mediated by dicyandiamide additive for efficient 4-terminal tandem solar cell

Wen, Qiaoyun; Duan, Chenghao; Zou, Feilin; Luo, Dou; Li, Jiong; Liu, Zidan; Wang, Jiarong; Yan, Keyou

doi:10.1016/j.cej.2022.139697

Cited by 18 publications

(12 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is reported that hydrogen bonding can alleviate halide (e.g., I, Br, etc.) ion migration. − In addition, EAD is expected to cause band-bending at the buried interface through the formation of interfacial dipoles. ,, Hereinafter, we denoted EAD-modulated ZnO as ZnO-EAD.…”

Section: Resultsmentioning

confidence: 99%

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI₂Br Perovskite Solar Cells

Zhang

Guo

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Buried interface modification is promising for preparing high-performance perovskite solar cells (PSCs) by improving the film quality and adjusting the interfacial energy level alignment. In this work, multifunctional ethylenediaminetetraacetic acid diammonium (EAD)-modulated ZnO is employed as an effective buried interface to regulate the interplay between SnO2 and CsPbI2Br in carbon-based inorganic PSCs (C-IPSCs). The burying of EAD into the ZnO interlayer not only enhances the photoelectric properties of ZnO by passivating oxygen defects but also adjusts the energy level alignment of the buried interface. More importantly, the perovskite quality is optimized and the buried interface defects are passivated due to the formation of coordination and hydrogen bondings. Benefiting from such a robust and efficient charge transfer configuration, a maximum power conversion efficiency of 14.58% is achieved in the optimized device, which represents the highest performance reported among those of low-temperature CsPbI2Br C-IPSCs. In addition, the unencapsulated device demonstrates better long-term and thermal stability.

show abstract

Section: Resultsmentioning

confidence: 99%

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI₂Br Perovskite Solar Cells

Zhang

Guo

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…As mentioned before, perovskite surfaces in the film (grain boundaries, interfaces) are a major site of degradation and efficiency loss. Current strategies propose the use of various additives, such as SnF 2 , , Sn(0), , and Pb(0) species, some reductants/antioxidants, ,,− V 3+ /V 2+ ionic pair as a redox shuttle, and the electron-withdrawing ligand that improves the redox potential of the tin adduct . They effectively reduce the content of Sn(IV) in the precursor solution and thus suppress the p -doping in the films caused by the forming of the Sn(II) vacancies.…”

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.

View full text Add to dashboard Cite

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.

show abstract

“…[215] Similarly, inorganic additives such as Rb I , [236] BaI 2 , [245] and SnO x [246] also have demonstrated significant improvement in film quality by suppressing the Sn vacancies leading to enhanced device PCE. Ionic salt [247] and reactive functional molecules [248][249][250] were effective in modulating film crystallization. These functional additives reduced surface residual stress and decreased defect state densities.…”

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

View full text Add to dashboard Cite

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.

show abstract

All-inorganic CsPb1-xSnxI2Br perovskites mediated by dicyandiamide additive for efficient 4-terminal tandem solar cell

Cited by 18 publications

References 72 publications

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI₂Br Perovskite Solar Cells

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI₂Br Perovskite Solar Cells

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

Contact Info

Product

Resources

About

All-inorganic CsPb1-xSnxI2Br perovskites mediated by dicyandiamide additive for efficient 4-terminal tandem solar cell

Cited by 18 publications

References 72 publications

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI2Br Perovskite Solar Cells

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI2Br Perovskite Solar Cells

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

Contact Info

Product

Resources

About

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI₂Br Perovskite Solar Cells

Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI₂Br Perovskite Solar Cells