Thermal Shock Fabrication of Ion-Stabilized Perovskite and Solar Cells.
basic_science · Level V
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- Record sourced from PubMed, PMID 35724329.
- Also identified by DOI 10.1002/adma.202203166.
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Abstract
A highly crystalline tempered-glass-like perovskite grain structure with compressed surface lattice realized by a thermal-shocking fabrication is shown. The strained perovskite grain structure is stabilized by Cl<sup>-</sup> -reinforcing surface lattice and shows enhanced bonding energy and ionic activation temperature, which contributes to hysteresis-free operation of perovskite solar cells (PSCs) at much higher temperature up to 363 K in thermal-shocking-processed MAPbCl<sub>x</sub> I<sub>3-</sub> <sub>x</sub> (T-MPI). The PSCs can be fabricated by a high-speed fully air process without post-annealing based on the scalable bar-coating technique. Both high efficiency and stability are achieved in T-MPI PSC with a power conversion efficiency (PCE) up to 22.99% and long-term operational stability with T<sub>80</sub> lifetime exceeding 4000 h.