Luis A. Cardenas

Post Doctoral Fellow

Université du Québec
Institut national de la recherche scientifique
Énergie, Matériaux et Télécommunications
1650, boulevard Lionel-Boulet
Varennes, Québec, Canada
J3X 1S2

Telephone: +1 (514) 228-6802
Fax: +1 (450) 929-8102
cardenas@emt.inrs.ca
www.emt.inrs.ca

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The pi-conjugated semiconductor structures (polymers) present a growing interest in particular in the field of communication and information technologies. Organic Field-effect Transistors (OFET), light-emitting diodes, and solar batteries are possible applications for these organic semiconductors. One of the key points to reach high performances with such devices using conjugated polymers is the elaboration of highly organized structures on surfaces on the single-molecular scale. Most of the studies about surface polymerization have been performed on conducting substrates. Playing with the organic films composition, the strength of the interaction with the substrate and the exposition of thin films to additional chemical species will give the opportunity to tune the physical properties of organic materials for applications in nanoelectronics. The specific goal of my research is to study the mechanism of molecular (polymer) adsorption on metallic substrates and determine the structural and electronic properties of molecular self-organized. The development of this project will require the use of surfaces science techniques (MBE growth, STM, LEED/Auger and photoemission spectroscopy).

Publications:

L. Chaput, C. Tournier-Colletta, L. Cardenas, A. Tejeda, B. Kierren, D. Malterre, Y. Fagot- Revurat, et al, “Giant alkali-induced lattice relaxation as the driving force of the insulating phase of alkali/Si(111):B”.Phys. Rev. Lett. 107, 187603 (2011)

C. Tournier-Colletta, L. Cardenas, Y. Fagot-Revurat, B. Kierren, A. Tejeda, D. Malterre, “Absolute coverage determination in the K/Si(111) :B 2sqrt3 x 2sqrt3 R30deg Surface”.Phys. Rev. B. 84, 155443, (2011)

R. Gutzler, L. Cardenas and F. Rosei, “Kinetics and thermodynamics in surface-confined molecular self-assembly”. Chem.Sci. (2011)

L. Cardenas, J. Lipton-Duffin and F. Rosei, “Guest Molecules Induce Transformations on Frameworks: Novel Route Toward 2D Self-Assembly in Solid-Liquid Interface”. Jap. J. appl. Phys. Lett. 50, 08LA02, (2011)

C. Tournier-Colletta, L. Cardenas, Y. Fagot-Revurat, B. Kierren, A. Tejeda, D. Malterre, P. Le Fevre, F. Bertran, and A. Taleb-Ibrahimi, “Bipolaronic insulator on alkali/Si(111):B-2(sqrt3xsqrt3) R30”. Phys. Rev. B. 82, 165429, (2010)

C. Tournier-Colletta, L. Cardenas, Y. Fagot-Revurat, B. Kierren, D. Malterre, “Spectral function of the K/Si(111):B surface state: the bipolaronic CDW scenario”. J. Electron. Spectrosc. Relat. Phenom. 181, 1, (2010)

L. Cardenas, Y. Fagot-Revurat, L. Moreau, B. Kierren and D. Malterre, “Surface-state bipolaron formation on a triangular lattice in the sp-type alkali/Si(111) Mott insulator”. Phys. Rev. Lett. 103, 046804, (2009)

L. Cardenas, Y. Fagot-Revurat L. Moreau, B. Kierren, and D. Malterre, “Novel bi-polaronic ground state in K/Si(111):B”. E-J. Surf. Sci. Nanotech. 7, (2009), 259

L. Cardenas, A. Rodriguez, F. Rueda, R. Casanova, A. Loaiza, “Oxygen and Hydrogen Adsorption Studies by Means of the Kelvin Probe on an Iron Phyllosilicate”. Rev. LatinAm. Metal. Mat. 24, 2, (2004)

Conferences, Proceedings and Books:

L. Chaput, A. Tejeda, C. Tournier-Colletta, Y. Fagot-Revurat, L. Cardenas, B. Kierren, D. Malterre, P. Lefevre, F. Bertran, A. Taleb-Ibrahimi, “Electronic structure of alkali/Si(111):B semiconducting interfaces”. Bulletin of the Am. Phys. Soc. APS March Meeting 56, 1, (2011), Dallas (USA)

L. Cardenas, Course PhD summer school self-assembly of molecular nanostructures. Aarhus University (2010), Sønderborg (Denmark)

L. Cardenas, “Etude des propriétés structurales et spectroscopiques des couches ultra-minces d'alcalins déposes sur Si(111)-B”.156 pages, (2009), Ph. D thesis – Diploma with Honor, Nancy (France)

L. Cardenas, Y. Fagot-Revurat, L. Moreau, A. Tejeda, B. Kierren, and D. Malterre, “Etude ARPES, LEED et STM de la transition sqrt3xsqrt3 (isolant) -> 2sqrt3xsqrt3 (isolant) dans les interfaces alcalins/Si(111) :B”. Journées Surfaces et Interfaces (2009), Nancy (France)

L. Cardenas, Y. Fagot-Revurat, L. Moreau, A. Tejeda, B. Kierren, and D. Malterre, “Redefinition of the ground state of alkali/Si(111):B”. The 25th European Conference on Surface Science “ECOSS” (2008), Liverpool (UK)

L. Cárdenas, Y. Fagot-Revurat, L. Moreau, B. Kierren, and D. Malterre, “Surface state bipolarons formation in the alkali/Si(111):B Mott insulators”. The 14th International Conference on Solid Films and Surface ICSFS-14 (2008), Dublin (Ireland)

L. Cárdenas, Y. Fagot-Revurat, L. Moreau, B. Kierren, and D. Malterre, “Temperature dependence of the correlated sp-type surface state observed in the semi-conducting surface K/Si(111)-B”. Strong Correlations and Angle-Resolved Photoemission Spectroscopy International seminar and workshop “CORPES” (2007), Dresden (Germany)

L. Cárdenas, Y. Fagot-revurat, S. Pons, B. Kierren, L. Moreau, D. Malterre, “Propriétés spectroscopiques de l’interface semi-conductrice K/Si(111)-B”. Journées de la matière condensée (2006), Toulouse (France)