Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases

Yuping Gao, Zonglong Song, Qiang Fu, Yu Chen, Liu Yang, Ziyang Hu, Yongsheng Chen, Yongsheng Liu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Enhancing stability while maintaining high efficiency is among the primary challenges in the commercialization of perovskite solar cells (PSCs). Here, a crystal growth technique assisted by in situ generated 2D perovskite phases has been developed to construct high-quality 2D/3D perovskite films. The in situ generated 2D perovskite serve as templates for regulating the nucleation and oriented crystal growth in the α-FAPbI3-rich film. This led to a high film quality with much reduced trap density and an ultralong carrier lifetime. The obtained perovskite film shows excellent stability under extreme environment conditions (T = 200 °C, RH = 75 ± 5%). The corresponding PSC achieved an efficiency of 26.16% (certified 25.84%), along with excellent operational stability (T93 > 1300 h, T ≅ 50 °C) as well as outstanding high and low temperature cycle stability.

Original languageEnglish
Article number2405921
JournalAdvanced Materials
Volume36
Issue number33
DOIs
Publication statusPublished - 15 Aug 2024
Externally publishedYes

Keywords

  • 2D perovskite
  • crystal orientation
  • morphology
  • perovskite solar cells
  • stability

Fingerprint

Dive into the research topics of 'Controlled Nucleation and Oriented Crystallization of Methylammonium-Free Perovskites via In Situ Generated 2D Perovskite Phases'. Together they form a unique fingerprint.

Cite this