Reduction of lead leakage from damaged lead halide perovskite solar modules using self-healing polymer-based encapsulation

@article{Jiang2019ReductionOL,
  title={Reduction of lead leakage from damaged lead halide perovskite solar modules using self-healing polymer-based encapsulation},
  author={Yan Jiang and Longbin Qiu and Emilio Jos{\'e} Ju{\'a}rez-P{\'e}rez and Luis K. Ono and Zhanhao Hu and Zonghao Liu and Zhifang Wu and Lingqiang Meng and Qijing Wang and Yabing Qi},
  journal={Nature Energy},
  year={2019},
  volume={4},
  pages={585-593}
}
In recent years, the major factors that determine commercialization of perovskite photovoltaic technology have been shifting from solar cell performance to stability, reproducibility, device upscaling and the prevention of lead (Pb) leakage from the module over the device service life. Here we simulate a realistic scenario in which perovskite modules with different encapsulation methods are mechanically damaged by a hail impact (modified FM 44787 standard) and quantitatively measure the Pb… 
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Although there have been significant advances in the stability of perovskite solar cells through encapsulation techniques to remove extrinsic degradation factors, such as moisture and oxygen,
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Inorganic–organic metal halide perovskite light harvester-based perovskite solar cells (PSCs) have come to the limelight of solar cell research due to their rapid growth in efficiency. At present,
Composite encapsulation enabled superior comprehensive stability of perovskite solar cells.
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A composite encapsulation, by sequentially depositing a compact Al2O3 layer and a hydrophobic FDTS layer on the completed device, to efficiently circumvent vapor permeability is developed, paving the way for scalable and robust encapsulation strategy feasible to hybrid perovskite optoelectronics in a reproducible manner.
Don’t Let the Lead Out: New Material Chemistry Approaches for Sustainable Lead Halide Perovskite Solar Cells
TLDR
New material chemistry approaches that can be applied to reduce the lead leakage/wastage from damaged lead halide perovskite solar cells are discussed and the potential of lead-free perovSKite for optoelectronic applications is discussed.
2D metal–organic framework for stable perovskite solar cells with minimized lead leakage
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A thiol-functionalized 2D conjugated metal–organic framework as an electron-extraction layer at the perovskite/cathode interface enables the realization of highly stable perovSKite solar cells with minimized lead ion leakage.
On-device lead sequestration for perovskite solar cells
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Using lead-absorbing materials to coat the front and back of perovskite solar cells can prevent lead leaching from damaged devices, without affecting the device performance or long-term operation stability.
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