Cross-linking strategies for efficient and highly stable perovskite solar cells

Wang, Xuran; Ding, Ziwu; Huang, Xiaozhen; Liu, Xingyu; Wang, Yue; Wang, Yang; Huang, Wei

doi:10.1039/d3tc03183g

“…This suggests that the trifunctional TTI can cross‐link with the bifunctional FAI, forming a three‐dimensional network (Figure 1B). Note that other cross‐linkable organic molecules have also been explored to enhance the performamce of PSCs [33] …”

Section: Resultsmentioning

confidence: 99%

Triisocyanate Derived Interlayer and High‐Melting‐Point Doping Promoter Boost Operational Stability of Perovskite Solar Cells

Li,

Zhang,

Ren

et al. 2024

Angew Chem Int Ed

0

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Formamidinium lead triiodide serves as the optimal light‐absorbing layer in single‐junction perovskite solar cells. However, achieving operational stability of high‐efficiency n‐i‐p type devices at elevated temperatures remains challenging. In this work, we implemented effective surface modifications on microcrystalline perovskite films. This involved the nucleophilic addition of formamidinium cations and coordination of residual PbI2 with triphenylmethane triisocyanate as well as subsequent polymerization. The in‐situ growth of a cross‐linking network chemically anchored on the perovskite film in this approach effectively reduced trap densities, favorably altered surface work function, suppressing interface charge recombination and thus enhancing cell efficiency. Coupled with a high‐melting‐point air‐doping promoter, we fabricated n‐i‐p type perovskite solar cells surpassing 25% efficiency, demonstrating excellent operational stability at 65°C.

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“…Note that other cross-linkable organic molecules have also been explored to enhance the performamce of PSCs. [33]…”

Section: Reaction Of Tti and Fa + In Solutionmentioning

confidence: 99%

Triisocyanate Derived Interlayer and High‐Melting‐Point Doping Promoter Boost Operational Stability of Perovskite Solar Cells

Li,

Zhang,

Ren

et al. 2024

Angewandte Chemie

0

View full text Add to dashboard Cite

Formamidinium lead triiodide serves as the optimal light‐absorbing layer in single‐junction perovskite solar cells. However, achieving operational stability of high‐efficiency n‐i‐p type devices at elevated temperatures remains challenging. In this work, we implemented effective surface modifications on microcrystalline perovskite films. This involved the nucleophilic addition of formamidinium cations and coordination of residual PbI2 with triphenylmethane triisocyanate as well as subsequent polymerization. The in‐situ growth of a cross‐linking network chemically anchored on the perovskite film in this approach effectively reduced trap densities, favorably altered surface work function, suppressing interface charge recombination and thus enhancing cell efficiency. Coupled with a high‐melting‐point air‐doping promoter, we fabricated n‐i‐p type perovskite solar cells surpassing 25% efficiency, demonstrating excellent operational stability at 65°C.

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“…118 In 2020, it was found that Phe-BF 3 could efficiently catalyze the desilylation of silyl ether to yield the alcohol under physiological conditions. 117 The solvolysis of phenylalanine trifluoroborate 111 led to the formation of fluoride with extremely slow kinetics. Therefore, desilylation was believed to occur via fluoride transfer between 111 and silyl ether.…”

Section: Bioorthogonal Prodrugs Using Trifluoroborate-mediated Desily...mentioning

confidence: 99%

Bioorthogonal Bond Cleavage Chemistry for On-demand Prodrug Activation: Opportunities and Challenges

Min,

Ji

2023

J. Med. Chem.

0

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Cross-linking strategies for efficient and highly stable perovskite solar cells

Abstract: Over the past few years, revolutionary progress has been made in perovskite solar cells (PSCs) with the power conversion efficiency (PCE) skyrocketed from initial 3.8% to 26.0% nowadays. However, stability...

Cited by 5 publications

References 219 publications

Triisocyanate Derived Interlayer and High‐Melting‐Point Doping Promoter Boost Operational Stability of Perovskite Solar Cells

Triisocyanate Derived Interlayer and High‐Melting‐Point Doping Promoter Boost Operational Stability of Perovskite Solar Cells

Triisocyanate Derived Interlayer and High‐Melting‐Point Doping Promoter Boost Operational Stability of Perovskite Solar Cells

Bioorthogonal Bond Cleavage Chemistry for On-demand Prodrug Activation: Opportunities and Challenges

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