Seminários

Seminário de Física da Matéria Condensada

Nesta quinta-feira (09/05) às 11h na sala 429 (torre nova) teremos o
seminário do palestrante Carlos Cesar Bof Bufon (LNNano). São todos
muito bem vindos!
Segue abaixo o título e resumo:

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Palestrante: Carlos Cesar Bof Bufon (LNNano)

Titulo: Hybrid organic-inorganic vertical junctions based on
freestanding nanomembranes

Resumo: The understanding of the charge transport mechanisms across
thin organic films is of fundamental importance for the design of
novel electronic and optoelectronic devices. In this work,
self-released metallic nanomembranes [1,2] are used to form vertical
junctions based on ultra-thin organic semiconducting (OS) layers
[3,4]. The charge transport across Au/OS/Au junctions consisting of
various molecular systems, with thicknesses ranging from 4 to 60nm,
can be set/mapped by using temperature and applied electric-field as
tuning knobs [3, 4, 6]. The nanomembrane-based contacts provide a
robust electrode on top of the OS, where no damage due to metal
interdiffusion and/or short circuits via pinholes have been observed.
Furthermore, applying the self-rolling phenomenon, we achieve an
approach that is entirely integrative on a chip, and several
components can be fabricated in parallel using well-established
semiconductor processing technologies.
This presentation will cover both, the fabrication processes as well
as the electrical characterization of each device systems.

References
[1] C.C. Bof Bufon, J. D. Arias Espinoza, D. J. Thurmer, M. Bauer, C.
Deneke, U. Zschieschang, H. Klauk, O. G. Schmidt, Nano Lett. 11,
(2011), 3727.
[2] C.C. Bof Bufon, J.D.C. Gonzalez, D. J. Thurmer, D. Grimm, M.
Bauer, O. G. Schmidt Nano Lett., 10, (2010), 2506.
[3] C. C. Bof Bufon, D. J. Thurmer, M. Fronk, G. Salvan, S., M.
Knupfer, D. R. T. Zahn, O. G.
Schmidt, J. Phys. Chem. C, 118, (2014), 7272.
[4] L. Merces, R.F. Oliveira, D. H. S. de Camargo, C. C. Bof Bufon, J.
Phys. Chem. C, 121, (2017), 16673.
[5] R.F. de Oliveira, L. Merces, F. Marques, E. Teixeira-Neto, D.H. de
Camargo, C. C. Bof Bufon, J. Phys. Chem. C, 122, (2018), (23), 12131.
[6] L. Merces, R.F. de Oliveira, H. L. Gomes, C. C. Bof Bufon, ACS
Appl. Mater. Interfaces, 10 (2018), (45) 39168.