Alumina template-assisted growth of bismuth selenide nanowire arrays

• Published in: Journal of crystal growth Vol. 310; no. 2; pp. 428 - 433
• Main Authors: Jagminas, A., Valsiūnas, I., Veronese, G.P., Juškėnas, R., Rutavičius, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15.01.2008; Elsevier
• Subjects: A1. Characterization; A1. X-ray diffraction; B1. Nanomaterials; B2. Semiconducting materials; Catalytic methods; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Methods of crystal growth; physics of crystal growth; Methods of nanofabrication; Nanoscale materials and structures: fabrication and characterization; Other topics in nanoscale materials and structures; Physics; Quantum wires; Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation; 78.6.Hf; B1. Nanomaterials; 61.82.Fk; 61.82.Rx; B2. Semiconducting materials; A1. Characterization; A1. X-ray diffraction; 81.05.Vs; Aluminium oxide; Scanning electron microscopy; Vacuum annealing; Order-disorder transformations; Semiconductor materials; Template reaction; XRD; Dispersive spectrometry; 61.82.Rx; 61.82.Fk; 78.6.Hf; 81.05.Vs; Bismuth selenides; Aqueous solutions; Optical properties; Growth mechanism; Ordering; A1. Characterization; A1. X-ray diffraction; B1. Nanomaterials; B2. Semiconducting materials; Nanowires; Arrays; Alumina; Nanostructured materials; Nanomaterial synthesis
• ISSN: 0022-0248; 1873-5002
• DOI: 10.1016/j.jcrysgro.2007.10.073

An aqueous solution has been developed to synthesize densely packed nanowire (nw) arrays of Bi 3Se 2 and Bi 2Se 3 or almost pure phase of Bi 2Se 3 within the pores of an alumina template by alternating current (ac) deposition protocol. Structural, morphological and optical properties exhibited by nw arrays before and after annealing in vacuum at 250 °C for 3 h have been studied ex situ for several nw compositions and different ordering degree. Typical cyclic voltammograms recorded in situ in the developed solutions for various electrodes are also presented and discussed. The as-grown and annealed products were characterized by XRD, EDX, WDX, FE-SEM and SEM.