Anti-aggregation self-assembled monolayers enable high-performance and scalable perovskite solar cells

Stable self-assembled monolayers (SAMs), such as (2-(9H-carbazol-9-yl)) ethylphosphonic acid (2PACz), are crucial for reducing interfacial energy loss in high-performance perovskite solar cells (PSCs). However, the inherent aggregation tendency of SAMs at the buried interface hinders the device's performance. Here, we propose a surfactant-assisted strategy to inhibit the aggregation of 2PACz by functionalizing cetyltrimethylammonium bromide (CTAB). Capitalizing on its distinctive electrostatic potential distribution, CTAB engages in non-bonding interactions with 2PACz. Theoretical and experimental characterizations prove that this promotes the uniform dispersion and anchoring of 2PACz on the substrate, leading…

• ÉP
  École Polytechnique Fédérale de Lausanne
• NN
  National Natural Science Foundation of China

  Award: 52303383
• CP
  China Postdoctoral Science Foundation

  Award: 2024M762713
• GO
  Government of Jiangsu Province

  Award: BE2022610
• SU
  Southeast University