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<p>An important challenge in the commercialization of perovskite solar cells (PSCs) is the simultaneous attainment of high power conversion efficiency (PCE) and high stability. Using polymer interfaces in PSCs can enhance durability by blocking water and oxygen and by suppressing ion interdiffusion, but their electronic shielding poses a challenge for efficient and stable PSCs<sup><CitationRef AdditionalCitationIDS="CR2" CitationID="CR1">1</CitationRef>–<CitationRef CitationID="CR3">3</CitationRef></sup>. Here we report a magnetic endohedral metallofullerene Nd@C<sub>82</sub>–polymer coupling layer, which features ultrafast electron extraction and in situ encapsulation, thereby promoting homogeneous electron extraction and suppressing ion interdiffusion. The Nd@C<sub>82</sub>–polymer coupling layer in PSCs exhibited a PCE of 26.78% (certified 26.29%) and 23.08% with an aperture area of 0.08 cm<sup>2</sup> and 16 cm<sup>2</sup> (modules), respectively. The unencapsulated devices retained about 82% of the initial PCE after 2,500 h of continuous 1-sun maximum power point operation at 65 °C.</p>

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A Nd@C82–polymer interface for efficient and stable perovskite solar cells

  • 期刊论文

  • 发表日期：

    2025年4月8日

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  • Yuexin Lin,
  • Zhichao Lin,
  • Shili Lv,
  • Yuan Shui,
  • Wenjing Zhu,
  • Zuhong Zhang,
  • Wenhan Yang,
  • Jinbo Zhao,
  • Hao Gu,
  • Junmin Xia,
  • Danning Wang,
  • Fenqi Du,
  • Annan Zhu,
  • Jin Liu,
  • Hairui Cai,
  • Bin Wang,
  • Nan Zhang,
  • Haibin Wang,
  • Xiaolong Liu,
  • Tao Liu,
  • Chuncai Kong,
  • Di Zhou,
  • Shi Chen,
  • Zhimao Yang,
  • Tao Li,
  • Wei Ma,
  • Guojia Fang,
  • Luis Echegoyen,
  • Guichuan Xing,
  • Shengchun Yang,
  • Tao Yang,
  • Wenting Cai,
  • Meng Li,
  • Wei Huang,
  • Chao Liang

摘要

An important challenge in the commercialization of perovskite solar cells (PSCs) is the simultaneous attainment of high power conversion efficiency (PCE) and high stability. Using polymer interfaces in PSCs can enhance durability by blocking water and oxygen and by suppressing ion interdiffusion, but their electronic shielding poses a challenge for efficient and stable PSCs1–3. Here we report a magnetic endohedral metallofullerene Nd@C82–polymer coupling layer, which features ultrafast electron extraction and in situ encapsulation, thereby promoting homogeneous electron extraction and suppressing ion interdiffusion. The Nd@C82–polymer coupling layer in PSCs exhibited a PCE of 26.78% (certified 26.29%) and 23.08% with an aperture area of 0.08 cm2 and 16 cm2 (modules), respectively. The unencapsulated devices retained about 82% of the initial PCE after 2,500 h of continuous 1-sun maximum power point operation at 65 °C.