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<p>Self-assembled molecules (SAMs) have emerged as a promising hole transport material for improving the power conversion efficiency (PCE) of p-i-n inverted perovskite solar cells (PSCs). However, molecular aggregation and insufficient coverage of SAMs, the defects at the bottom surface of perovskite films, and weak adhesive force of perovskite films on SAMs result in poor quality and longevity of the interface between SAMs and perovskite (buried interface), hampering the realization of long-term operationally stable inverted PSCs. Here we report a supramolecular host-guest interaction strategy to stabilize buried interface in inverted PSCs. Through incorporating sulfonyl-functionalized calixarene molecules, namely 4-tert-Butylsulfonylcalix[4]arene (SC4A) with soft Lewis basicity, the reinforced buried interface durability is fulfilled by homogenizing SAM film, passivating interface defects, releasing interface residual stress, and bilateral chemical bridging. The resulting inverted PSCs and large-area modules accomplish a certified PCE of 27.12% and 22.25% (aperture area 655.2 cm<sup>2</sup>), respectively. Moreover, the SC4A-modulated devices retain 97.4% of its initial PCE after continuous operation under one sun illumination for 2125 h, and 90.7% of its original PCE after damp heat aging (85 °C and 85% relative humidity) for 2000 h.</p>

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Soft supermolecule stabilized buried interface for high-performance inverted perovskite solar cells and modules

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月11日

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  • Ruoqi Yang,
  • Jike Ding,
  • Tian Hou,
  • Yue Yu,
  • Ziyuan Liu,
  • Hao Liu,
  • Lang Yu,
  • Chongzhu Hu,
  • Shaokuan Gong,
  • Xihan Chen,
  • Xilai He,
  • Kun Zhang,
  • Meirong Fu,
  • Yang Wang,
  • Xinxing Liu,
  • Dongmei He,
  • Xuxia Shai,
  • Jiajia Zhang,
  • Xingyu Gao,
  • Xuanhua Li,
  • Yuelong Huang,
  • Cong Chen,
  • Jianhong Yi,
  • Jiangzhao Chen

摘要

Self-assembled molecules (SAMs) have emerged as a promising hole transport material for improving the power conversion efficiency (PCE) of p-i-n inverted perovskite solar cells (PSCs). However, molecular aggregation and insufficient coverage of SAMs, the defects at the bottom surface of perovskite films, and weak adhesive force of perovskite films on SAMs result in poor quality and longevity of the interface between SAMs and perovskite (buried interface), hampering the realization of long-term operationally stable inverted PSCs. Here we report a supramolecular host-guest interaction strategy to stabilize buried interface in inverted PSCs. Through incorporating sulfonyl-functionalized calixarene molecules, namely 4-tert-Butylsulfonylcalix[4]arene (SC4A) with soft Lewis basicity, the reinforced buried interface durability is fulfilled by homogenizing SAM film, passivating interface defects, releasing interface residual stress, and bilateral chemical bridging. The resulting inverted PSCs and large-area modules accomplish a certified PCE of 27.12% and 22.25% (aperture area 655.2 cm2), respectively. Moreover, the SC4A-modulated devices retain 97.4% of its initial PCE after continuous operation under one sun illumination for 2125 h, and 90.7% of its original PCE after damp heat aging (85 °C and 85% relative humidity) for 2000 h.