Within the Ph.D study supervised by Charles CORNET and co-supervised by Laurent PEDESSEAU at FOTON Institute, Ida LUCCI proposes an original study based on scanning tunneling microscopy images, transmission electron microscopy, and atomic force microscopy to show that the stability of (114)A facets can be used to design a large‐scale textured GaP template monolithically integrated on Si. These observations are then discussed in terms of thermodynamics through DFT calculations. As a result, a stress-free nano-patterned surface is obtained by molecular beam epitaxy, composed of a regular array of GaP (114)A facets over a 2 in. vicinal Si substrate. Advantages of such textured (114)A GaP/Si template are enlightened in terms of surface gain, band lineups, and ohmic contacts for solar water-splitting applications.
 Ida LUCCI, FOTON Institute ida.lucci insa-rennes.fr +33 2 23 23 82 13 |
 Charles CORNET, FOTON Institute charles.cornet insa-rennes.fr +33 2 23 23 83 99 |
 Laurent PEDESSEAU, FOTON Institute laurent.pedesseau insa-rennes.fr +33 2 23 23 88 69 |
IPR (Rennes, France), CEMES (Toulouse, France), IES (Montpellier, France), C2N (Marcoussis, France)
A Stress‐Free and Textured GaP Template on Silicon for Solar Water Splitting, I. Lucci, S. Charbonnier, M. Vallet, P. Turban, Y. Léger, T. Rohel, N. Bertru, A. Létoublon, J.‐B. Rodriguez, L. Cerutti, E. Tournié, A. Ponchet, G. Patriarche, L. Pedesseau, C. Cornet. Adv. Funct. Mat. Hot Topic : Water Splitting, 1801585, 2018, (hal-01803990)
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