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Methodologies toward Highly Efficient Perovskite Solar Cells.

Sang Il Seok1, Michael Grätzel2, Nam-Gyu Park3

  • 1School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 689-798, South Korea.

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|February 13, 2018
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Summary
This summary is machine-generated.

Perovskite solar cells (PSCs) have rapidly advanced, achieving over 22% power conversion efficiency (PCE). Key technologies involve precursor solution chemistry, defect-free films, and grain boundary passivation for reproducible high-efficiency PSCs.

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Area of Science:

  • Materials Science
  • Photovoltaics
  • Solid-State Chemistry

Background:

  • Perovskite solar cells (PSCs) emerged in 2009, initially with low power conversion efficiency (PCE).
  • Early solid-state PSCs showed promising stability (500 h) and efficiency breakthroughs around 10%.
  • Significant advancements in device architecture and perovskite film quality have driven PCE beyond 22%.

Purpose of the Study:

  • To review methodologies for achieving highly efficient perovskite solar cells (PSCs).
  • To disclose key technologies for reproducible PCEs exceeding 20%.
  • To provide insights for further PCE enhancement in PSCs.

Main Methods:

  • Detailed examination of precursor solution chemistry.
  • Processing techniques for fabricating defect-free perovskite films.
  • Strategies for effective passivation of grain boundaries.

Main Results:

  • Methodologies for high-efficiency PSCs are described.
  • Key technologies for reproducible >20% PCE are disclosed.
  • Highest reported PCE reached 22.7% as of October 2017.

Conclusions:

  • Understanding precursor chemistry, crystal growth, and defect control is crucial.
  • These insights facilitate reproducible high PCE (>20%) PSC production.
  • Further research into these areas promises enhanced PSC performance.