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June 19, 2019 September 9, 2026

Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires: A Simple Method towards Photoluminescent Materials with Guiding Light Properties - Notes

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Published abstract

High refractive index nanowires are very attractive because of their waveguiding properties and their multiple applications. In this sense, metal halide perovskites, an emerging and appealing optoelectronic material, have also been tailored into nanowire structures. Here, we present an easy, low-cost and versatile method that has made possible to achieve nanowires of controlled and uniform width. The method has been applied here to all-inorganic and hybrid lead bromide perovskite (CsPbBr₃ and CH₃NH₃PbBr₃ respectively) materials. The procedure is based on the spin coating of precursors solutions, at room temperature, on a PDMS replica of the periodic grooves and lands of commercially available Compact Disc (CD) or Digital Versatile Disc (DVD) polycarbonate plates. The method can be applied for the synthesis of other material nanowires before being transferred onto other substrates. The obtained CsPbBr₃ and CH₃NH₃PbBr₃ nanowires exhibit high photoluminescence and guiding light properties along the material.

Figures

CD/DVD groove replication into a hydrophilic PDMS mould, including the resulting template profiles and characteristic dimensions.
Figure 1. Summary. CD/DVD groove replication into a hydrophilic PDMS mould, including the resulting template profiles and characteristic dimensions.

© 2019 The Royal Society of Chemistry and the Chinese Chemical Society. Source: I. Rodriguez et al., Materials Chemistry Frontiers 3(9), 1754-1760 (2019), DOI 10.1039/C9QM00210C. Reproduced by the authors in accordance with RSC author reuse rights.

Spin-coating and solvent-removal sequence used to crystallize MAPbBr₃ or CsPbBr₃ nanowires inside the replicated PDMS grooves.
Figure 2. Summary. Spin-coating and solvent-removal sequence used to crystallize MAPbBr₃ or CsPbBr₃ nanowires inside the replicated PDMS grooves.

© 2019 The Royal Society of Chemistry and the Chinese Chemical Society. Source: I. Rodriguez et al., Materials Chemistry Frontiers 3(9), 1754-1760 (2019), DOI 10.1039/C9QM00210C. Reproduced by the authors in accordance with RSC author reuse rights.

Optical microscopy, X-ray diffraction and FIB cross-sections showing aligned polycrystalline CsPbBr₃ nanowires that conform to the CD- and DVD-derived grooves.
Figure 3. Summary. Optical microscopy, X-ray diffraction and FIB cross-sections showing aligned polycrystalline CsPbBr₃ nanowires that conform to the CD- and DVD-derived grooves.

© 2019 The Royal Society of Chemistry and the Chinese Chemical Society. Source: I. Rodriguez et al., Materials Chemistry Frontiers 3(9), 1754-1760 (2019), DOI 10.1039/C9QM00210C. Reproduced by the authors in accordance with RSC author reuse rights.

Distance-resolved photoluminescence along a CsPbBr₃ nanowire, separating local direct emission (P0) from the red-shifted component collected after guided propagation (P1).
Figure 4. Summary. Distance-resolved photoluminescence along a CsPbBr₃ nanowire, separating local direct emission (P0) from the red-shifted component collected after guided propagation (P1).

© 2019 The Royal Society of Chemistry and the Chinese Chemical Society. Source: I. Rodriguez et al., Materials Chemistry Frontiers 3(9), 1754-1760 (2019), DOI 10.1039/C9QM00210C. Reproduced by the authors in accordance with RSC author reuse rights.

Materials Chemistry Frontiers Inside Front Cover featuring groove-assisted lead bromide perovskite aligned nanowires
Inside Front Cover. Materials Chemistry Frontiers, Volume 3, Number 9 (September 2019), featuring the groove-assisted lead bromide perovskite aligned nanowires research.

© 2019 The Royal Society of Chemistry and the Chinese Chemical Society. Article: I. Rodriguez et al., Materials Chemistry Frontiers 3(9), 1754-1760 (2019), DOI 10.1039/C9QM00210C. Reproduced by the authors with acknowledgement.

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Related publications

Connections within F. Ramiro-Manzano's publication record, selected from shared research topics and evidence reviewed in the source papers.

Figure 1. Schematic representation of the electric contact on the microcrystalline samples, showing the irradiation objective at the bottom part controlled with a piezoelectric stage.
Journal article
Nanomaterials 13, 2570 (2023)
Scanning Photocurrent Microscopy in Single Crystal Multidimensional Hybrid Lead Bromide Perovskites
E. Segura-Sanchis, R. García-Aboal, R. Fenollosa, F. Ramiro-Manzano and P. Atienzar

What the related paper adds

This later paper extends the research direction developed in Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires: A Simple Method towards Photoluminescent Materials with Guiding Light Properties. This study moves from optical resonances to spatially resolved charge transport in individual lead-bromide perovskite crystals. Scanning photocurrent microscopy separates the two transport regimes found in three-dimensional crystals from the single dominant regime in multidimensional 2D-3D crystals and exposes crystal edges as important recombination regions.

What this paper adds to the related work

This paper provides an earlier basis for the later development reported in Scanning Photocurrent Microscopy in Single Crystal Multidimensional Hybrid Lead Bromide Perovskites. This paper converts low-cost CD and DVD surface profiles into moulds for aligned CsPbBr3 and MAPbBr3 nanowires. The process controls wire width and alignment at room temperature, allows transfer to other substrates, and demonstrates bright photoluminescence together with guided light propagation over distances longer than twelve micrometres.

Figure 4: MAPbBr3 crystal optical properties
Article
Dalton Trans. 49(36), 12798-12804 (2020)
Optical Properties of Organic/Inorganic Perovskite Microcrystals through the Characterization of Fabry-Pérot Resonances
F. Ramiro-Manzano, R. García-Aboal, R. Fenollosa, S. Biasi, I. Rodriguez, P. Atienzar and F. Meseguer

What the related paper adds

This later paper extends the research direction developed in Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires: A Simple Method towards Photoluminescent Materials with Guiding Light Properties. This work uses the Fabry-Perot fringes of individual MAPbBr3 microcrystals as a source of quantitative information. A simultaneous fit of transmittance and photoluminescence retrieves crystal thickness and the real and imaginary parts of the refractive index near the band edge, while defining when a planar microcrystal behaves as an optical cavity.

What this paper adds to the related work

This paper provides an earlier basis for the later development reported in Optical Properties of Organic/Inorganic Perovskite Microcrystals through the Characterization of Fabry-Pérot Resonances. This paper converts low-cost CD and DVD surface profiles into moulds for aligned CsPbBr3 and MAPbBr3 nanowires. The process controls wire width and alignment at room temperature, allows transfer to other substrates, and demonstrates bright photoluminescence together with guided light propagation over distances longer than twelve micrometres.

Figure 2. SEM images of perovskite crystal morphologies
Journal article
ACS Omega 3, 5229-5236 (2018)
Single Crystal Growth of Hybrid Lead Bromide Perovskites Using a Spin-Coating Method
R. García-Aboal, R. Fenollosa, F. Ramiro-Manzano, I. Rodríguez, F. Meseguer and P. Atienzar

What the related paper adds

This earlier paper establishes a scientific basis for Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires: A Simple Method towards Photoluminescent Materials with Guiding Light Properties. This study develops a fast spin-coating route to micrometre-sized MAPbBr3 single crystals and shows how rotation speed and coordinating additives control shape, orientation and defect density. The improved planar crystals are not only cleaner model specimens but also support optical resonances, providing the material platform used by later optical studies.

What this paper adds to the related work

Building on the earlier contribution Single Crystal Growth of Hybrid Lead Bromide Perovskites Using a Spin-Coating Method, this paper advances the research line. This paper converts low-cost CD and DVD surface profiles into moulds for aligned CsPbBr3 and MAPbBr3 nanowires. The process controls wire width and alignment at room temperature, allows transfer to other substrates, and demonstrates bright photoluminescence together with guided light propagation over distances longer than twelve micrometres.

Research fields

Bottom-up

Perovskite precursor solutions crystallise inside submicrometre grooves replicated from commercial CD and DVD surfaces into PDMS. Confinement guides the room-temperature growth of aligned CsPbBr₃ and MAPbBr₃ nanowire arrays with dimensions set by the template profile.

Characterization

Optical microscopy, X-ray diffraction and FIB-assisted cross-sectional electron microscopy establish the nanowire alignment, phase and geometry. Spatial photoluminescence measurements then show that excitation can be guided along an individual wire, relating its crystal morphology to light transport.

RESEARCH TOPICS

EmissionThe nanowires act as both emitters and waveguides. The decomposition shown with the optical measurements distinguishes local emission from guided light and explains why the remote spectrum changes shape rather than merely becoming weaker.MaterialsThe method is demonstrated with both all-inorganic CsPbBr3 and hybrid CH3NH3PbBr3, producing aligned polycrystalline wires whose width is imposed by a mould rather than only by a crystal growth direction. Because CD and DVD masters have different pitches and groove dimensions, the same low-cost process provides two controlled wire geometries and can be transferred to other solution-processed materials.ChemistryPDMS replicas are cast from the periodic grooves and lands of commercial CDs or DVDs, then spin-coated at room temperature with the appropriate lead-bromide perovskite precursor. This links solution chemistry directly to the final one-dimensional optical geometry.
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