Sunday, January 23, 2022

Researchers develop self-healing perovskite solar cell

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Degradation of the perovskite materials with moisture. Credit: Niu Yunjuan

A staff led by Prof. Hu Linhua on the Hefei Institutes of Physical Science of the Chinese Academy of Sciences (CAS) has not too long ago developed a kind of self-healing perovskite solar cell by useful mixture of polyvinylpyrrolidone (PVP). Related outcomes had been printed within the Journal of Energy Chemistry.

These have proven superb humidity stability and self-healing habits after 500 hours of operation, in response to the researchers.

Organic-inorganic hybrid perovskite solar cells are thought of to be a aggressive various to standard silicon solar cells. However, they’re vulnerable to degrading when uncovered to air. Scientists have been working to make them secure and higher self-healing to withstand harsh working environments.

Air moisture is the important thing situation for perovskites. It invades the movies and accelerates the injury of units. Therefore, the researchers launched PVP to the methylammonium lead iodide perovskite precursor. It can management and endow the units with self-healing potential in a moisture setting.

PVP is a polymer with many carbonyl teams. When it was launched in solar cells, it acted as a “protective armor with an automatic blood backflow effect” towards water vapor.

In addition, PVP can enhance crystal progress with fewer defects and bigger grains.

  • Researchers develop self-healing perovskite solar cell
    Self-healing impact. Credit: Niu Yunjuan
  • Researchers develop self-healing perovskite solar cell
    Composition of self-healing perovskite solar cell. Credit: Kong Fantai

Scientists create secure supplies for extra environment friendly solar cells

More data:
Yunjuan Niu et al, Improved crystallinity and self-healing results in perovskite solar cells through useful incorporation of polyvinylpyrrolidone, Journal of Energy Chemistry (2021). DOI: 10.1016/j.jechem.2021.10.029

Researchers develop self-healing perovskite solar cell (2021, December 28)
retrieved 28 December 2021

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