Unveiling Charge Transfer and Recombination Dynamics in 3D/2D Heterostructure via Ultrafast Spectroscopy for Efficient Perovskite Solar Cells.

ABSTRACT: Charge transfer properties between 3D and 2D perovskite layers play a key role in determining the performance of 3D/2D heterostructure perovskite solar cells (PSCs). However, the exact photophysical behaviors at 3D/2D perovskite heterostructure remain ambiguous, which makes it challenging to form the desired 3D/2D heterostructure. Herein, via combining the state-of-the-art ultrafast spectroscopies of femtosecond transient absorption spectroscopy, transient absorption microscopy and time-resolved photoluminescence spectroscopy, charge transfer and recombination dynamics are unveiled at 3D/2D perovskite heterostructure, for comparison, where the 2D layers are fabricated through the two distinct approaches of organic ligand surface reaction (2D_L) and 2D crystal seed direct depositi

SUBMITTER: Li D 

PROVIDER: S-EPMC12462917 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature