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

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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.

How to cite

Initials first

I. Rodriguez, R. Fenollosa, F. Ramiro-Manzano, R. García-Aboal, P. Atienzar and F. J. Meseguer. Groove-assisted solution growth of lead bromide perovskite aligned nanowires: a simple method towards photoluminescent materials with guiding light properties. Materials Chemistry Frontiers 3(9), 1754–1760 (2019). DOI: 10.1039/C9QM00210C.

Family name first

Rodriguez, I., Fenollosa, R., Ramiro-Manzano, F., García-Aboal, R., Atienzar, P., & Meseguer, F. J. (2019). Groove-assisted solution growth of lead bromide perovskite aligned nanowires: a simple method towards photoluminescent materials with guiding light properties. Materials Chemistry Frontiers, 3(9), 1754–1760. https://doi.org/10.1039/C9QM00210C

Article access and reuse

The Version of Record is available from the Royal Society of Chemistry and is not hosted on this website. RSC authors retain the right to reuse their own figures in later publications and on personal websites when the original article is properly acknowledged. The four figures below are complete, unmodified compositions extracted from the article PDF.

Figures

Figure 1 from Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires
Figure 1. Schematic illustration of the preparation and features of the PDMS template.

© 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.

Figure 2 from Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires
Figure 2. Preparation procedure of the MAPbBr₃ and CsPbBr₃ nanowires in the grooves of hydrophilized PDMS templates obtained by replication of the CD or DVD profiles.

© 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.

Figure 3 from Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires
Figure 3. Polycrystalline CsPbBr₃ nanowire characteristics. The optical images of the CsPbBr₃ perovskite nanowires obtained on (a) DVD and (b) CD replica PDMS substrates. (c) The XRD pattern of the CsPbBr₃ nanowires and of a CsPbBr₃ film structure. (d) The FESEM image of a lateral view of a sample of CsPbBr₃ nanowires (obtained on the PDMS replica of the DVD structure) cut by FIB milling perpendicularly to the surface and coated with sputtered gold. (e) The FESEM image of the cross-section of a CsPbBr₃ nanowire grown on the PDMS replica of the CD structure (sputtered Pt coating was used to cover the sample before the FIB milling).

© 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.

Figure 4 from Groove-Assisted Solution Growth of Lead Bromide Perovskite Aligned Nanowires
Figure 4. (a–d) Optical images recorded by the camera of the set up described in Fig. S4 (ESI†) of the two neighboring isolated CsPbBr₃ perovskite nanowires obtained in a groove of a DVD-based PDMS substrate. The chosen nanowire for the PL experiments is indicated by a black arrow in the optical microscopy image at the top right of the figure (scale bar: 10 μm). The white spots on the images (a–d) correspond to the PL signals produced by the excitation laser for several distances, dE–C, specified under each image, between excitation and collection (bottom end of the nanowire) points. The intensities between the images are not comparable because they were recorded with different sensitivity conditions of the camera. Down left of the figure: the solid color curves correspond to the PL spectra measured for each dE–C case (same color and label as camera image frames), and the dashed red curves correspond to fits according to a theoretical model described in ref. 65. As an example, the plot at the right side shows that the fitted spectrum “c” results from the overlap of two peaks, P0 and P1 (the blue and red dashed curves), corresponding respectively to the direct emission of the nanowire and the guided light emission from excitation to the collection area.

© 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.

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