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Reducing lead toxicity of perovskite solar cells with a built-in supramolecular complex

Nature Sustainability volume 6, pages 1455–1464 (2023)Cite this article

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Abstract

Perovskite solar cells (PSCs) as an emerging renewable energy technology are expected to play an important role in the transition to a sustainable future. However, lead toxicity of PSCs remains a major flaw hindering their large-scale implementation and compromising their sustainability, as lead is currently inevitable in making high-performance PSCs. Here we show that this can be addressed by embedding a cross-linking supramolecular complex composed of 2-hydroxypropyl β-cyclodextrin (HPβCD) and 1,2,3,4-butane tetracarboxylic acid (BTCA). The built-in HPβCD-BTCA complex can largely inhibit lead leakage from severely damaged PSCs, which retain 97% of the initial efficiency after 522 h dynamic water scouring, with only <14 ppb lead contamination in water. Toxicity evaluation implies that the chelation between HPβCD-BTCA complex and lead-bearing perovskites can also reduce the toxicity of lead-bearing PSCs to the comparable or even lower level than their lead-free counterparts. Moreover, the HPβCD-BTCA incorporation simultaneously improves the stability and reproducibility of PSCs. The proposed strategy paves a new avenue for sustainable PSCs and can move PSCs closer to commercial implementation.

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Fig. 1: Chemical structures of HPβCD and BTCA molecules and their roles in stabilizing perovskite precursors.
Fig. 2: Chemical interaction between perovskite and HPβCD-BTCA and their beneficial roles in modulating perovskite crystallization.
Fig. 3: Photoelectric properties of PSCs fabricated with or without HPβCD-BTCA modification.
Fig. 4: Lead sequestration in broken PSCs and lead toxicity evaluation in perovskite films with or without HPβCD-BTCA incorporation.
Fig. 5: Schematic illustration of Pb recycling and management in PSCs.

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The data that support the findings of this study are available within the Article and its Supplementary Information files and from the corresponding author upon reasonable request. Source data are provided with this paper.

References

  1. Best Research-Cell Efficiency Chart (National Renewable Energy Laboratory, 2023); https://www.nrel.gov/pv/cell-efficiency.html

  2. Jung, E. H. et al. Efficient, stable and scalable perovskite solar cells using poly(3-hexylthiophene). Nature 567, 511–515 (2019).

    Article  CAS  Google Scholar 

  3. Correa-Baena, J.-P. et al. Promises and challenges of perovskite solar cells. Science 358, 739–744 (2017).

    Article  CAS  Google Scholar 

  4. Yang, W. S. et al. Iodide management in formamidinium-lead-halide-based perovskite layers for efficient solar cells. Science 356, 1376–1379 (2017).

    Article  CAS  Google Scholar 

  5. Jeong, M. et al. Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3 V voltage loss. Science 369, 1615–1620 (2020).

    Article  CAS  Google Scholar 

  6. Jeong, J. et al. Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells. Nature 592, 381–385 (2021).

    Article  CAS  Google Scholar 

  7. Yoo, J. J. et al. Efficient perovskite solar cells via improved carrier management. Nature 590, 587–593 (2021).

    Article  CAS  Google Scholar 

  8. Rong, Y. et al. Challenges for commercializing perovskite solar cells. Science 361, eaat8235 (2018).

    Article  Google Scholar 

  9. Rajagopal, A., Yao, K. & Jen, A. K.-Y. Toward perovskite solar cell commercialization: a perspective and research roadmap based on interfacial engineering. Adv. Mater. 30, 1800455 (2018).

    Article  Google Scholar 

  10. Li, X. On-device lead-absorbing tapes for sustainable perovskite solar cells. Nat. Sustain. 4, 1038–1041 (2021).

    Article  CAS  Google Scholar 

  11. Xiao, X. et al. Lead-adsorbing ionogel-based encapsulation for impact-resistant, stable, and lead-safe perovskite modules. Sci. Adv. 7, eabi8249 (2021).

    Article  CAS  Google Scholar 

  12. Hu, Y. et al. Dual functions of performance improvement and lead leakage mitigation of perovskite solar cells enabled by phenylbenzimidazole sulfonic acid. Small Methods 6, 2101257 (2022).

    Article  CAS  Google Scholar 

  13. Chen, S. et al. Trapping lead in perovskite solar modules with abundant and low-cost cation-exchange resins. Nat. Energy 5, 1003–1011 (2020).

    Article  Google Scholar 

  14. Chen, S. et al. Preventing lead leakage with built-in resin layers for sustainable perovskite solar cells. Nat. Sustain. 4, 636–643 (2021).

    Article  Google Scholar 

  15. Zhang, H. et al. Design of superhydrophobic surfaces for stable perovskite solar cells with reducing lead leakage. Adv. Energy Mater. 11, 2102281 (2021).

    Article  CAS  Google Scholar 

  16. Meng, X. et al. A biomimetic self-shield interface for flexible perovskite solar cells with negligible lead leakage. Adv. Funct. Mater. 31, 2106460 (2021).

    Article  CAS  Google Scholar 

  17. Wu, P. et al. Beyond efficiency fever: preventing lead leakage for perovskite solar cells. Matter 5, 1137–1161 (2022).

    Article  Google Scholar 

  18. Gao, Y. et al. Recent advances in lead-safe perovskite solar cells. Adv. Funct. Mater. 32, 2208225 (2022).

    Article  CAS  Google Scholar 

  19. Li, X. et al. On-device lead sequestration for perovskite solar cells. Nature 578, 555–558 (2020).

    Article  CAS  Google Scholar 

  20. Chen, J. et al. Managing lead leakage in efficient perovskite solar cells with phosphate interlayers. Adv. Mater. Interfaces 9, 2200570 (2022).

    Article  CAS  Google Scholar 

  21. Liu, S. et al. Pseudo-planar heterojunction organic photovoltaics with optimized light utilization for printable solar windows. Adv. Mater. 34, 2201604 (2022).

    Article  CAS  Google Scholar 

  22. Chen, S. et al. A holistic sunscreen interface strategy to effectively improve the performance of perovskite solar cells and prevent lead leakage. Chem. Eng. J. 433, 134566 (2022).

    Article  Google Scholar 

  23. Wang, F. et al. Supramolecular bridging strategy enables high performance and stable organic-inorganic halide perovskite solar cells. Chem. Eng. J. 446, 137431 (2022).

    Article  CAS  Google Scholar 

  24. Lee, J. et al. Nonaromatic green-solvent-processable, dopant-free, and lead-capturable hole transport polymers in perovskite solar cells with high efficiency. Adv. Energy Mater. 10, 1902662 (2020).

    Article  CAS  Google Scholar 

  25. Liang, Y. et al. Lead leakage preventable fullerene-porphyrin dyad for efficient and stable perovskite solar cells. Adv. Funct. Mater. 32, 2110139 (2022).

    Article  CAS  Google Scholar 

  26. Niu, B. et al. Mitigating the lead leakage of high-performance perovskite solar cells via in situ polymerized networks. ACS Energy Lett. 6, 3443–3449 (2021).

    Article  CAS  Google Scholar 

  27. Park, S. Y. et al. Sustainable lead management in halide perovskite solar cells. Nat. Sustain. 3, 1044–1051 (2020).

    Article  Google Scholar 

  28. Wang, X. et al. Sustainable management of lead in perovskite solar cells. J. Mater. Chem. A 10, 15861–15864 (2022).

    Article  CAS  Google Scholar 

  29. Chen, B. et al. Recycling lead and transparent conductors from perovskite solar modules. Nat. Commun. 12, 5859 (2021).

    Article  CAS  Google Scholar 

  30. Wu, W. et al. Blading phase-pure formamidinium-alloyed perovskites for high-efficiency solar cells with low photovoltage deficit and improved stability. Adv. Mater. 32, 2000995 (2020).

    Article  CAS  Google Scholar 

  31. Alsbaiee, A. et al. Rapid removal of organic micropollutants from water by a porous β-cyclodextrin polymer. Nature 529, 190–194 (2016).

    Article  CAS  Google Scholar 

  32. Chen, C. et al. Stabilizing formamidinium lead iodide perovskite precursor solution with phenylboric acid. Sol. RRL 5, 2000715 (2021).

    Article  CAS  Google Scholar 

  33. Li, J. et al. An effective and economical encapsulation method for trapping lead leakage in rigid and flexible perovskite photovoltaics. Nano Energy 93, 106853 (2022).

    Article  CAS  Google Scholar 

  34. Luo, D. et al. Minimizing non-radiative recombination losses in perovskite solar cells. Nat. Rev. Mater. 5, 44–60 (2020).

    Article  CAS  Google Scholar 

  35. Wang, F. et al. Iodine-assisted antisolvent engineering for stable perovskite solar cells with efficiency >21.3 %. Nano Energy 67, 104224 (2020).

    Article  CAS  Google Scholar 

  36. Martwong, E., Sukhawipat, N. & Junthip, J. Cotton cord coated with cyclodextrin polymers for paraquat removal from water. Polymers 14, 2199 (2022).

    Article  CAS  Google Scholar 

  37. Yang, C. Q., Lu, Y. & Lickfield, G. C. Chemical analysis of 1,2,3,4-butanetetracarboxylic acid. Text. Res. J. 72, 817–824 (2002).

    Article  CAS  Google Scholar 

  38. Liu, P. et al. Study on the toxic effect of lead(II) ion on Escherichia coli. Biol. Trace Elem. Res. 115, 195–202 (2007).

    Article  CAS  Google Scholar 

  39. Feng, X. et al. Close-loop recycling of perovskite solar cells through dissolution-recrystallization of perovskite by butylamine. Cell Rep. Phys. Sci. 2, 100341 (2021).

    Article  CAS  Google Scholar 

  40. Tan, Y. et al. Chemical linkage and passivation at buried interface for thermally stable inverted perovskite solar cells with efficiency over 22%. CCS Chem. 1–13 (2022).

  41. Schmidt, F. et al. Organic solvent free PbI2 recycling from perovskite solar cells using hot water. J. Hazard. Mater. 447, 130829 (2023).

    Article  CAS  Google Scholar 

  42. Song, T. et al. Comprehensive performance calibration guidance for perovskites and other emerging solar cells. Adv. Energy Mater. 11, 2100728 (2021).

    Article  CAS  Google Scholar 

  43. Zhao, Y. et al. Perovskite seeding growth of formamidinium-lead-iodide-based perovskites for efficient and stable solar cells. Nat. Commun. 9, 1607 (2018).

    Article  Google Scholar 

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Acknowledgements

We acknowledge financial support from the National Key R&D Program of China (grant number 2019YFB1503200), the National Natural Science Foundation of China (grant number 22005355 to W.-Q. W.), Guangdong Basic and Applied Basic Research Foundation (grant number 2022A1515010282 to W.-Q.W.) and State Key Laboratory of Advanced Technology for Materials Synthesis and Processing (Wuhan University of Technology).

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  1. These authors contributed equally: Meifang Yang, Tian Tian.

Authors and Affiliations

  1. MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, People’s Republic of China

    Meifang Yang, Tian Tian, Yuxuan Fang, Wen-Guang Li, Gengling Liu, Wenhuai Feng & Wu-Qiang Wu

  2. Department of Environmental and Resource Engineering, Technical University of Denmark, Lyngby, Denmark

    Mingyi Xu

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  1. Meifang Yang
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Contributions

W.-Q.W. supervised this work. W.-Q.W. conceived the idea and designed the experiments. M.Y. and T.T. investigated the cross-linking mechanism and fabricated the thin films and devices. M.Y. carried out the characterization of materials and the Pb leakage test. M.Y., Y.F. and G.L. performed the XRD, XPS and transient absorption study. W.-G.L. and M.Y. conducted the spectral corrections, temperature-dependent PL and TRPL measurements. Y.F. and W.F. performed the thick-film devices fabrication and measurement. M.Y., M.X., T.T. and Y.F. investigated the biocompatibility of the HPβCD-BTCA-modified perovskite films and the Pb toxicity. W.-Q.W. and M.Y. wrote the first draft of the manuscript, and all authors discussed the results and reviewed the manuscript.

Corresponding author

Correspondence to Wu-Qiang Wu.

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Nature Sustainability thanks Tao Xu and the other, anonymous, reviewer(s) for their contribution to the peer review of this work.

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Supplementary information

Supplementary Information

Supplementary Figs. 1–45, Discussion and Table 1.

Reporting Summary

Supplementary Video 1

Broken PSCs under dynamic water scouring.

Supplementary Video 2

J–V testing of broken PSCs under dynamic water scouring.

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Yang, M., Tian, T., Fang, Y. et al. Reducing lead toxicity of perovskite solar cells with a built-in supramolecular complex. Nat Sustain 6, 1455–1464 (2023). https://doi.org/10.1038/s41893-023-01181-x

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