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Tönu Pullerits. Portrait.

Tönu Pullerits

Professor

Tönu Pullerits. Portrait.

Carrier Cooling in Lead Halide Perovskites : A Perspective on Hot Carrier Solar Cells

Author

  • Weihua Lin
  • Sophie E. Canton
  • Kaibo Zheng
  • Tõnu Pullerits

Summary, in English

The concept of hot carrier solar cells (HCSCs) has been proposed as a promising yet elusive path toward high-performance photovoltaics (PV), capable of surpassing the Shockley-Queisser limit by recycling energy that would otherwise be lost during thermalization. Lead halide perovskites (LHPs) have emerged as highly promising materials for PV applications. The reports of slow hot carrier (HC) cooling in these materials have ignited discussions of their potential in realizing HCSCs. Here we summarize the key findings regarding HC dynamics in LHPs, as revealed by numerous studies using advanced time-resolved spectroscopies. We also emphasize the interconnected mechanisms involved in HC cooling. In addition, we discuss the influence of nanostructuring on HC cooling dynamics in LHPs and suggest that two-dimensional LHPs, with their inherent quantum well structure, might exhibit modified phononic features and altered carrier-phonon coupling strength. We conclude by critically discussing the prospects for HCSCs, taking into account our current understanding of HC cooling and excitation conditions under sunlight.

Department/s

  • Chemical Physics
  • NanoLund: Centre for Nanoscience
  • LTH Profile Area: Nanoscience and Semiconductor Technology
  • LU Profile Area: Light and Materials
  • LTH Profile Area: Photon Science and Technology
  • eSSENCE: The e-Science Collaboration

Publishing year

2024-01

Language

English

Pages

298-307

Publication/Series

ACS Energy Letters

Volume

9

Issue

1

Document type

Journal article review

Publisher

The American Chemical Society (ACS)

Topic

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Other

  • ISSN: 2380-8195