Self-Assembly of 0D/3D Perovskite Bi-Layer from a Micro-Emulsion Ink

Yuchen Hou, Haodong Wu, Jungjin Yoon, Luyao Zheng, Dong Yang, Tao Ye, Ke Wang, Kai Wang, Shashank Priya

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

2D/3D bilayer perovskite synthesized using sequential deposition methods has shown effectiveness in enhancing the stability of perovskite solar devices. However, these approaches present several limitations such as uncontrolled chemical processes, disordered interfacial states, and microscale heterogeneities that can chemically, structurally, and electronically compromise the performance of solar modules. Here, this work demonstrates an emulsion-based self-assembly approach using natural lipid biomolecules in a nonionic solution system to form a 0D/3D bilayer structure. The new capping layer is composed of 0D-entity nanoparticles of perovskite encapsulated by a hydrophobic lipid membrane, analogous to a cell structure, formed through a molecular self-assembly process. This 0D layer provides a strong water repellent characteristics, optimum interface microstructure, and excellent homogeneity that drives significant enhancement in stability. Solar modules with a large active area of 70 cm2 fabricated using films comprising of 0D/3D bilayer structure are found to show consistent efficiency of >19% for 2800 h of continuous illumination in the air (60% relative humidity). This emulsion-based self-assembly approach is expected to have a transformative impact on the design and development of stable perovskite-based devices.

Original languageEnglish (US)
Article number2300570
JournalAdvanced Energy Materials
Volume13
Issue number28
DOIs
StatePublished - Jul 27 2023
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2023 The Authors. Advanced Energy Materials published by Wiley-VCH GmbH.

Keywords

  • 0D/3D bilayers
  • micro-emulsion inks
  • self-assembly
  • solar module scalability
  • stability

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