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Issue 37, 2016
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Synthesis and formation mechanism of CuInSe2 nanowires by one-step self-catalysed evaporation growth

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Abstract

High-quality CuInSe2 (CISe) nanowires have been prepared by a one-step evaporation process. The presented growth process results in a composite material consisting of CISe NWs on top of a polycrystalline CISe base layer. The nanowires were extensively characterized by transmission electron microscopy, confirming their composition and atomic-scale crystal structure with a very low number of structural defects. From these analyses, we infer that the growth axis is along the [111] direction. The polycrystalline base layer has a tetragonal chalcopyrite structure and is optically active as confirmed by X-ray diffraction and photoluminescence (PL) analysis, respectively. Potential applications of this composite CISe NW/base-layer material for photovoltaic energy conversion are supported by the reduced reflectivity of the material and its strong PL intensity. The presented growth method is based on elemental evaporation under vacuum conditions, which makes the process compatible with the fabrication of photovoltaic devices.

Graphical abstract: Synthesis and formation mechanism of CuInSe2 nanowires by one-step self-catalysed evaporation growth

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Supplementary files

Article information


Submitted
07 Jun 2016
Accepted
17 Aug 2016
First published
17 Aug 2016

CrystEngComm, 2016,18, 7147-7153
Article type
Paper

Synthesis and formation mechanism of CuInSe2 nanowires by one-step self-catalysed evaporation growth

H. Limborço, P. M. P. Salomé, J. P. Teixeira, D. G. Stroppa, R.-Ribeiro Andrade, N. Nicoara, K. Abderrafi, J. P. Leitão, J. C. Gonzalez and S. Sadewasser, CrystEngComm, 2016, 18, 7147
DOI: 10.1039/C6CE01317A

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