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Updated: Sep 14, 2025

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
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Exciton Properties and Broadband Emission in Two-Dimensional Ruddlesden-Popper Perovskites

Jieyao Tan1,2, Xingxing Jiang1,2, Dongyu Liu2

  • 1Key Laboratory of Micro-Nano Energy Materials and Application Technologies, University of Hunan Province & College of Physics and Electronics Engineering, Hengyang Normal University, Hengyang 421002, China.

The Journal of Physical Chemistry Letters
|July 21, 2025
PubMed
Summary

Broadband emission in two-dimensional Ruddlesden-Popper perovskites originates from extrinsic self-trapped excitons (STEs) associated with iodine vacancies, not intrinsic STEs. This finding offers design principles for efficient light-emitting diodes.

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