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Updated: Jan 31, 2026

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Will Nontoxic High-Performance Perovskite Photovoltaics Ever Be Possible?

Bai-Qing Zhao1, Xun Xu2, Chuan-Nan Li1

  • 1Materials Department, University of California, Santa Barbara, CA, 93106-5050, USA.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry
|January 30, 2026
PubMed
Summary

Researchers are exploring lead-free perovskite solar cells as a safer alternative to lead-based ones. However, achieving high efficiency with these environmentally friendly materials presents significant challenges.

Keywords:
Pb‐free perovskitesperovskite solar cellspower conversion efficiencystabilitytoxicity

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Area of Science:

  • Materials Science
  • Renewable Energy

Background:

  • Lead-based halide perovskite solar cells achieve high power conversion efficiencies (>27%).
  • Lead toxicity is a major obstacle for commercialization, necessitating Pb-free alternatives.

Purpose of the Study:

  • To examine progress in developing Pb-free perovskite alternatives.
  • To identify performance bottlenecks, material limitations, and development challenges.

Main Methods:

  • Comparative assessment of material properties.
  • Analysis of device performance limitations.

Main Results:

  • Pb-free perovskite development faces fundamental performance bottlenecks.
  • Inherent material limitations hinder simultaneous environmental safety and high efficiency.

Conclusions:

  • A significant dilemma exists between environmental safety and efficiency in perovskite photovoltaics.
  • Material constraints present substantial barriers to developing effective Pb-free perovskite solar cells.