Controlling the polarity in addition to the structural uniformity of ZnO nanowires is critical for real-world-device integration. We have recently demonstrated, by combining selective area growth with chemical bath deposition, the fabrication of epitaxial ZnO nanowire arrays with great structural uniformity and optical quality as well as with controllable polarity. These open new opportunities for fabricating complex heterostructures for electronic, optoelectronic and photovoltaic devices.
(a) Top-view FESEM image of patterned O-polar c-plane ZnO single crystals. (b), (c) Tilted-view FESEM images of ZnO nanowires grown by chemical bath deposition on patterned O-polar c-plane ZnO single crystals. (d) Corresponding x-ray pole figures recorded on the (112 ̅2) asymmetric diffraction peak of ZnO nanowires.
V. Consonni, G. Rey, J. Bonaimé, N. Karst, B. Doisneau, H. Roussel, S. Renet, D. Bellet Synthesis and physical properties of ZnO/CdTe core shell nanowires grown by low-cost deposition methods, Appl. Phys. Lett. 98, 111906 (2011).
E. Puyoo, G. Rey, E. Appert, V. Consonni, D. Bellet Efficient Dye-Sensitized Solar Cells Made from ZnO Nanostructure Composites, J. Phys. Chem. C 116, 18117 (2012).
S. Guillemin, V. Consonni, E. Appert, E. Puyoo, L. Rapenne, H. Roussel Critical Nucleation Effects on the Structural Relationship Between ZnO Seed Layer and Nanowires, J. Phys. Chem. C, 116, 25106 (2012).
S. Guillemin, L. Rapenne, H. Roussel, E. Sarigiannidou, G. Brémond, V. Consonni Formation Mechanisms of ZnO Nanowires: The Crucial Role of Crystal Orientation and Polarity, J. Phys. Chem. C 117, 20738 (2013).
V. Consonni, E. Sarigiannidou, E. Appert, A. Bocheux, S. Guillemin, F. Donatini, I.C. Robin, J. Kioseoglou, F. Robaut Selective area growth of well-ordered ZnO nanowire arrays with controllable polarity, ACS Nano 8, 4761 (2014).
Wide Band Gap Semiconductor Nanowires, Wiley-ISTE, July 2014 Editors : Vincent Consonni, Guy Feuillet / 2 volumes :