ReviewACS materials Au2025
Is There an Optimal Spacer Cation for Two-Dimensional Lead Iodide Perovskites?
Review in ACS materials Au, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed.
- Stable, Efficient, and Scalable Two-Dimensional Perovskites for Next-Generation Solar Cells.Small science · 2026Review
- Harnessing Metal-Halide Layered Perovskite Structures for Next-Generation Lighting Sources.Accounts of materials research · 2026Article
- Cage Balancing Enhances Optoelectronic and Lasing Performance in Stable Quasi-2D Tin Iodide Perovskites.Journal of the American Chemical Society · 2025Article
- Molecular Engineering of Interlayer Exciton Delocalization in 2D Perovskites.Journal of the American Chemical Society · 2025Article
- Synthesis of zero-dimensional octahedral metal halides through solvent incorporation and their photophysical properties.Nature chemistry · 2025Article
- Lead-free halide perovskite memristors for scalable crossbar arrays.Nano convergence · 2025Review
Corrections and comments
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Two-dimensional lead iodide perovskites have attracted significant attention for their potential applications in optoelectronic and photonic devices due to their tunable excitonic properties. The choice of organic spacer cations significantly influences the light emission and exciton transport properties of these materials, which are vital for their device performance. In this Perspective, we discuss the impact of spacer cations on lattice dynamics and exciton-phonon coupling, focusing on three representative 2D lead iodide perovskites that exhibit distinct types of structural distortions. Minimizing structural distortions, such as dynamic out-of-plane octahedral tilting and lone pair distortion, appears to be essential for achieving narrow photoluminescence (PL) emission peaks, high PL quantum yields, and rapid exciton diffusion by suppressing exciton-phonon coupling, as demonstrated in 2D perovskites based on phenylethylammonium cation or its derivatives. We propose that designing spacer cations with enhanced intermolecular interactions and denser packing, combined with the close packing of inorganic ions to minimize the motions of both organic and inorganic lattices, would be the ideal scenario for yielding the most favorable optoelectronic properties in these materials.
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Registered trials
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