Mechanically exfoliated single-phase 2D Ruddlesden-Popper (PA)2MAn−1PbnBr3n+1 (n = 1, 2, 3, and 4) perovskites

Natarajan Thirugnanam; Huanfeng He; Yunbin He; Debesh Devadutta Mishra; Cher Ming Tan

doi:10.1016/j.matlet.2025.138965

Mechanically exfoliated single-phase 2D Ruddlesden-Popper (PA)₂MA_n−1Pb_nBr_3n+1 (n = 1, 2, 3, and 4) perovskites

Natarajan Thirugnanam^*, Huanfeng He, Yunbin He, Debesh Devadutta Mishra, Cher Ming Tan

^*Corresponding author for this work

Department of Electronic Engineering

Research output: Contribution to journal › Journal Article › peer-review

Abstract

Two-dimensional (2D) Ruddlesden-Popper (RP) multilayered Organic-Inorganic Hybrid Perovskites (OIHPs) in the structural form of (PA)₂MA_n-1Pb_nBr_3n+1 (n = 1, 2, 3, and 4) were synthesized by temperature cooling crystallization method. Subsequently, the synthesized 2D RP OIHPs were mechanically exfoliated to obtain in single-phase. Their crystallinity and thickness were studied by X-ray diffraction (XRD). Interestingly, the thickness determined from XRD matches with atomic force microscopy(AFM) results. Further, the optical properties of 2D RP OIHPs were tuned with its layer thickness. Our results provide a foundation for future research into the synthesis of single-phase 2D RP multilayered OIHPs with different bulky organic cations as spacers.

Original language	English
Article number	138965
Journal	Materials Letters
Volume	398
DOIs	https://doi.org/10.1016/j.matlet.2025.138965
State	Published - 01 11 2025

Bibliographical note

Publisher Copyright:
© 2025

Keywords

2D
Mechanical exfoliation
Multilayer
Ruddlesden-Popper phase

Access to Document

10.1016/j.matlet.2025.138965

Cite this

@article{d7bcf84955c74f99b43dea169ce8d9d0,

title = "Mechanically exfoliated single-phase 2D Ruddlesden-Popper (PA)2MAn−1PbnBr3n+1 (n = 1, 2, 3, and 4) perovskites",

abstract = "Two-dimensional (2D) Ruddlesden-Popper (RP) multilayered Organic-Inorganic Hybrid Perovskites (OIHPs) in the structural form of (PA)2MAn-1PbnBr3n+1 (n = 1, 2, 3, and 4) were synthesized by temperature cooling crystallization method. Subsequently, the synthesized 2D RP OIHPs were mechanically exfoliated to obtain in single-phase. Their crystallinity and thickness were studied by X-ray diffraction (XRD). Interestingly, the thickness determined from XRD matches with atomic force microscopy(AFM) results. Further, the optical properties of 2D RP OIHPs were tuned with its layer thickness. Our results provide a foundation for future research into the synthesis of single-phase 2D RP multilayered OIHPs with different bulky organic cations as spacers.",

keywords = "2D, Mechanical exfoliation, Multilayer, Ruddlesden-Popper phase",

author = "Natarajan Thirugnanam and Huanfeng He and Yunbin He and Mishra, \{Debesh Devadutta\} and Tan, \{Cher Ming\}",

note = "Publisher Copyright: {\textcopyright} 2025",

year = "2025",

month = nov,

day = "1",

doi = "10.1016/j.matlet.2025.138965",

language = "英语",

volume = "398",

journal = "Materials Letters",

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TY - JOUR

T1 - Mechanically exfoliated single-phase 2D Ruddlesden-Popper (PA)2MAn−1PbnBr3n+1 (n = 1, 2, 3, and 4) perovskites

AU - Thirugnanam, Natarajan

AU - He, Huanfeng

AU - He, Yunbin

AU - Mishra, Debesh Devadutta

AU - Tan, Cher Ming

PY - 2025/11/1

Y1 - 2025/11/1

N2 - Two-dimensional (2D) Ruddlesden-Popper (RP) multilayered Organic-Inorganic Hybrid Perovskites (OIHPs) in the structural form of (PA)2MAn-1PbnBr3n+1 (n = 1, 2, 3, and 4) were synthesized by temperature cooling crystallization method. Subsequently, the synthesized 2D RP OIHPs were mechanically exfoliated to obtain in single-phase. Their crystallinity and thickness were studied by X-ray diffraction (XRD). Interestingly, the thickness determined from XRD matches with atomic force microscopy(AFM) results. Further, the optical properties of 2D RP OIHPs were tuned with its layer thickness. Our results provide a foundation for future research into the synthesis of single-phase 2D RP multilayered OIHPs with different bulky organic cations as spacers.

AB - Two-dimensional (2D) Ruddlesden-Popper (RP) multilayered Organic-Inorganic Hybrid Perovskites (OIHPs) in the structural form of (PA)2MAn-1PbnBr3n+1 (n = 1, 2, 3, and 4) were synthesized by temperature cooling crystallization method. Subsequently, the synthesized 2D RP OIHPs were mechanically exfoliated to obtain in single-phase. Their crystallinity and thickness were studied by X-ray diffraction (XRD). Interestingly, the thickness determined from XRD matches with atomic force microscopy(AFM) results. Further, the optical properties of 2D RP OIHPs were tuned with its layer thickness. Our results provide a foundation for future research into the synthesis of single-phase 2D RP multilayered OIHPs with different bulky organic cations as spacers.

KW - 2D

KW - Mechanical exfoliation

KW - Multilayer

KW - Ruddlesden-Popper phase

UR - https://www.scopus.com/pages/publications/105008876585

U2 - 10.1016/j.matlet.2025.138965

DO - 10.1016/j.matlet.2025.138965

M3 - 文章

AN - SCOPUS:105008876585

SN - 0167-577X

VL - 398

JO - Materials Letters

JF - Materials Letters

M1 - 138965

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