Oriented 2D Ruddlesden-Popper metal halides by pulsed laser deposition.

IF 9.1 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

npj 2D Materials and Applications Pub Date : 2025-01-01 Epub Date: 2025-06-12 DOI:10.1038/s41699-025-00571-3

Junia S Solomon, Nada Mrkyvkova, Vojtĕch Kliner, Tatiana Soto-Montero, Ismael Fernandez-Guillen, Martin Ledinský, Pablo P Boix, Peter Siffalovic, Monica Morales-Masis

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引用次数: 0

Abstract

Two-dimensional (2D) Ruddlesden-Popper (RP) metal halides present unique and tunable properties. However, direct and oriented synthesis is challenging due to low formation energies that lead to rapid, uncontrolled growth during solution-based processing. Here, we report the solvent-free growth of oriented n = 1 (PEA)₂PbI₄ RP films by pulsed laser deposition (PLD). In situ photoluminescence (PL) during deposition reveals the formation of the n = 1 phase at the early stages of growth. X-ray diffraction (XRD) and grazing-incidence wide-angle scattering (GIWAXS) confirm a single oriented n = 1 phase, independent of the substrate. Co-localized spatially resolved PL and AFM further validate the conformal growth. While oriented growth is substrate-independent, film stability is not. (PEA)₂PbI₄ films grown on strained epitaxial MAPbI₃ remain stable for over 184 days without any sign of cation exchange. This work highlights the potential of PLD for direct, room-temperature synthesis of 2D (PEA)₂PbI₄ RP films and stable 2D/3D heterostructures.

查看原文本刊更多论文

脉冲激光沉积定向二维Ruddlesden-Popper金属卤化物。

二维（2D） Ruddlesden-Popper （RP）金属卤化物具有独特的可调性质。然而，直接定向合成具有挑战性，因为地层能量低，在溶液处理过程中会导致快速、不受控制的生长。在这里，我们报道了脉冲激光沉积（PLD）定向n = 1 (PEA)2PbI4 RP膜的无溶剂生长。沉积过程中的原位光致发光（PL）揭示了生长早期n = 1相的形成。x射线衍射（XRD）和掠入射广角散射（GIWAXS）证实了单一取向的n = 1相，与衬底无关。共域空间分辨PL和AFM进一步验证了保形生长。虽然取向生长与衬底无关，但薄膜稳定性却不是。在应变外延MAPbI3上生长的（PEA）2PbI4薄膜在184天内保持稳定，没有任何阳离子交换的迹象。这项工作强调了PLD在直接室温合成2D (PEA)2PbI4 RP薄膜和稳定的2D/3D异质结构方面的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

npj 2D Materials and Applications Engineering-Mechanics of Materials

CiteScore

14.50

自引率

2.10%

发文量

审稿时长

15 weeks

期刊介绍： npj 2D Materials and Applications publishes papers on the fundamental behavior, synthesis, properties and applications of existing and emerging 2D materials. By selecting papers with the potential for impact, the journal aims to facilitate the transfer of the research of 2D materials into wide-ranging applications.