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Prof. Ivo A. Hümmelgen Prof. Ivo A. Hümmelgen E-mail: iah@fisica.ufpr.br Phone/Fax:
++55 - 41 - 33613645 Education:
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RESEARCH INTERESTS: |
Charge
carrier injection
and transport in conjugated polymers and blends.
Magnetic field effects in organic semiconductors,
Transistors with magnetic field dependent gain.
Hybrid
and all-organic vertical architecture transistors
Organic memories and oscillators.
Hybrid and Organic photovoltaic devices.
Sensors
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THE GROUP
Post-Doctoral collaborators
Dr. Messai A. Mamo
Graduate Students:
Abd Rashid B. M. Yusoff
Bruno Barros
Cunha
Cristiane de C. Bernardi
Keli F. Seidel
Lucieli Rossi
Marcia de W. C. C. Greenshields
Mohammed F. Ahmed
Wagner S. Machado
FINANCIAL SUPPORT: CAPES, CNPq, CT-ENERG, CT-INFRA, FINEP, Fundação
Araucária, IM2C, PADCT, PRONEX, Renami, Royal Society.
OPPORTUNITIES: Fellowship opportunities for MSc/PhD/Post-doctoral
studies in
Brazilian
PEC-PG program: for students with Portuguese language proficiency
TWAS/CNPq
Fellowships for PhD/Post-doctoral studies in
Fellowships of the OAS - Organization of the American States:
RECENT PUBLICATIONS
2011
AC-Conductance
and Capacitance Measurements for Ethanol Vapor Detection Using Carbon Nanotube-PVA
Composite Based Devices, M. W. C. C. Greenshields,
Michelle S. Meruvia, I. A. Hümmelgen, N. J. Coville, S. D. Mhlanga, H. J. Ceraglioli, J. C. R. Quispe, V. Baranauskas, Journal of Nanoscience and Nanotechnology 11
(2011) 2384.
2010
Hybrid
Vertical Architecture Transistor with 2,6-Diphenylindenofluorene
Based Emitter and Base Permeability Controlled by Polystyrene Spheres
Lithography. L. Rossi, J. P. M. Serbena, M. S. Meruvia, I. A.
Hümmelgen, E. M. Stori, C. K. Saul,Z.
Y. Wang, Journal of Nanoscience and Nanotechnology 10 (2010) 2389.
Electrical
and optical properties of poly(2-dodecanoylsulfanyl-p-phenylenevnylene)
and its application in electroluminescent devices. F. M. Nodari,
R. L. Patyk, L. S. Roman, A. R. V. Benvenho, I. A. Hümmelgen, E. K. C. Yoshikawa, J. Gruber,
Journal of Materials Science. Materials in Electronics 21
(2010) 1235.
Hydrostatic
pressure sensor based on carbon sphere polyvinyl alcohol composites, W. S. Machado, P.
L. Athayde, M. A. Mamo, W.
A. L. van Otterlo, N. J. Coville,
I. A. Hümmelgen, Organic Electronics 11 (2010) 1736.
Simple
write-once-read-many-times memory device based on a carbon sphere-poly(vinylphenol) composite. M. A. Mamo, W. S. Machado,
W. A. L. van Otterlo, N. J. Coville, I. A. Hümmelgen, Organic Electronics 11
(2010) 1858.
2009
Hybrid vertical architecture transistor with
magnetic-field-dependent current amplification as organic magnetocurrent
investigation tool, A. R. B. M. Yusoff and I. A.
Hümmelgen, Journal of Applied Physics 106 (2009) 074505.
Very high magnetocurrent in tris-(8-hydroxyquinoline)
aluminum-based bipolar charge injection devices, A. R. B. M. Yusoff, W. J. da Silva, J. P. M. Serbena, M. S. Meruvia and I. A.
Hümmelgen, Applied Physics Letters 94 (2009) 253305.
Vertical structure permeable-base hybrid transistor
based on multilayered metal base for stable electrical characteristics, J. P. M. Serbena, J. Y. Huang, D. Ma, Z. Y. Wang and I. A.
Hümmelgen, Organic Electronics 10 (2009) 357
Ambipolar permeable metal-base transistor based on NPB/C60
heterojunction, J. Huang, M. Yi, I. A. Hümmelgen and D. Ma, Organic
Electronics 10 (2009) 210.
Sulfonated polyaniline/n-type
silicon junctions. Silva, W. J.; Hümmelgen,
2008
Vertical structure p-type permeable metal-base organic
transistors based on N,N'-diphentyl-N,N'-bis(1-naphthylphenyl)-1,1'-biphenyl-4,4'-diamine. Applied Physics
Letters, v. 92 (2008) 232111.
High gain in hybrid
transistors with BAlq3/Alq3 isotype heterostructure emitter. M. Yi, J. Huang, D. Ma,
I. A. Hümmelgen, Applied Physics Letters 92 (2008) 243312.
Hybrid metal-base transistor
with base of sulfonated polyaniline and fullerene emitter. W. J. da Silva, I. A.
Hümmelgen, R. M. Q. Mello, D. Ma, Applied Physics Letters, 93 (2008) 053301.
Hybrid permeable metal-base
transistor with large common-emitter current gain and low operational voltage. Hümmelgen,
Large current gain and low operational voltage
permeable metal-base organic transistors based on Au/Al double layer metal base. Yi, M. ; J. Huang ; Ma, D. ; Hümmelgen,
2007
Polymer
Solar Cells Using Single-Wall Carbon Nanotubes Modified with Thiophene Pedant
Groups. Hümmelgen, I. A. ; Nogueira, A. F. ; Lomba, B. S ; Soto-Oviedo
,M. A. ; Correia ,C. R. D. ; Corio, P. ; Furtado, C.
A ., Journal of Physical Chemistry C 111(2007)18431.
Magnetic
field release of trapped charges in poly(fluorenylenevinylene)s, Hümmelgen, I. A.
; Meruvia, M. S. ; Freire,
J. A. O.; Gruber, J. ; Graeff, C. F. O., Organic
Electronics 8 (2007) 695.
Synthesis, morphology and device characterizations of a new organic
semiconductor based on 2,6-diphenylindenofluorene, T. Hadizad,
J. Zhang, D. Yan, Z. Y. Wang, J. P. M. Serbena, M. S. Meruvia, I. A. Hummelgen, J. Mater. Sci.: Mater.
Electron. 18 (2007) 903.
Ferrocene-based copolymer for the sensing and discrimination of
low-molecular-weight alcohols. Hümmelgen, I. A. ; Meruvia, M.
S. ; Goncalves, C. S. ; Benvenho, A. R. V. ; Gruber, J. , Sensor Letters 5
(2007) 625.
High
gain in hybrid transistors with vanadium oxide/tris(8-hydroxyquinoline)
aluminium emitter, M. Yi, S. Yu, C. Feng, T.
Zhang, D. Ma, M. S. Meruvia, I. A. Hümmelgen, Organic
Electronics Organic Electronics 8 (2007) 311.
High open-circuit voltage single-layer polybithiophene-based
photovoltaic devices. Leguenza, E. L ; Patyk, R. L.; Mello, R. M. Q.; Micaroni,
L.; Koehler, M.; Hümmelgen, I. A., Journal of Solid State Electrochemistry 11 (2007) 580.
Carbon nanotube-polybithiophene
photovoltaic devices with high open-circuit voltage, R. L. Patyk, B. S. Lomba, A. F. Nogueira, C. A. Furtado, A. P.
Santos, R. M. Q. Mello, L. Micaroni, I. A. Hümmelgen,
Phys. Stat. Sol. (RRL) 1, R43-R45 (2007).
2006
Sulfonated
polyaniline/poly(3-methylthiophene)-based photovoltaic devices, R. Valsaki, F. Muchenski, R. M. Q.
Mello, L. Micaroni, L. S. Roman, I. A. Hümmelgen, J.
Solid State Electrochemistry, 10(2006) 24.
Hybrid molecular/inorganic semiconductor
transistors in vertical architecture, M. S. Meruvia,
I. A. Hümmelgen, Advanced Functional Materials 16 (2006) 459.
Electrodeposited p-type magnetic Metal Base Ttransistor, R. G. Delatorre,
M. L. Munford, V. Stenger, A. A. Pasa,
W. Schwarzacher, M. S. Meruvia,
I. A. Hummelgen, J. Appl.
Phys. 99, 8H704 (2006).
Hybrid Permeable-Base Transistors Based on an Indenofluorene Derivative, J. P. M. Serbena,
High current density Tris(8-hydroxyquinoline) aluminum-based hybrid transistor in vertical architecture, M. Yi, S. Yu, D.
Ma, C. Feng, T. Zhang, M. S. Meruvia,
I. A. Hummelgen,. J. Appl. Phys. 99, 106102 (2006).
p-Type Metal-Base Transistor, R. G. Delatorre, M. L.
Munford, R. Zandonay, V. C. Zoldan,
A. A. Pasa, W. Schwarzacher,
M. S. Meruvia, I. A. Hummelgen,
Appl. Phys. Lett. 88, 233504 (2006).
Operation of metallic base transistors with fullerene emitter, L. Rossi, M. S. Meruvia, I. A. Hummelgen, W. Schwarzacher, A. A. Pasa, J. Appl. Phys. 2006, in press.
Copper phthalocyanine based hybrid p-type
permeable-base transistor in vertical architecture, C. Feng,
M. Yi, S. Yu, D. Ma, T. Zhang, M. S. Meruvia, I. A. Hummelgen,. Appl. Phys. Lett. 88, 203501 (2006).
Polymeric Electronic Oscillators Based on Bistable Conductance Devices, J. A. O. Freire, G. D. Moro, R. Toniolo,
I. A. Hummelgen, C. A. Ferreira, Organic Electronics,
2006, in press.
Physical and chemical characterization of
poly(2-bromo-5-hexyloxy-p-phenylenevinylene) and
poly(5,5'-dibromo-2,2'-bis-hexyloxy-4,4'-biphenylenevinylene) - comparison to
related polymers, A. R. V. Benvenho, R. Lessmann, I. A. Hümmelgen, R. M. Q. Mello, R. W. C. Li, F. Bazito, J. Gruber, Materials Chemistry and Physics, 95
(2006) 176.
Magnetoresistive hybrid transistor in vertical architecture, M. S. Meruvia A. R. V. Benvenho, I. A.
Hümmelgen, J. A. Gomez, C. F. O. Graeff, R. W. C. Li;
L. H. J. M. C. Aguiar, J. Gruber, Physica
Status Solidi A-Applied Research, 202 (2005) R158.
Hybrid magnetic transistor, M. S. Meruvia, A. R.
V. Benvenho, I. A. Hummelgen,
R. W. C. Li, L. H. J. M. C. Aguiar, J. Gruber, Solid
State Commun. 139, 27 (2006).
2005
Magnetoresistive hybrid transistor in vertical architecture, M. S. Meruvia, I. A. Hümmelgen J. A. Gomez, C. F. O Graeff, R. W. C. Li, L. H. J. M. C. Aguiar,
J. Gruber, physica status solidi
(a) 202, R158 (2005).
Pseudo-metal-base transistor with high gain, M. S. Meruvia,
A. R. V. Benvenho, I. A. Hümmelgen, A. A. Pasa, W. Schwarzacher, Applied
Physics letters 86, 263504 (2005).
Electrical optimization of single-layer light-emitting diodes based on
binary organic semiconductor blends, A. Gusso,
I. A. Hümmelgen, M. G. E. da Luz, Journal of Physics
- D (Applied Physics), 38, 260 (2005).
2004
Organic Electronic Pulse Generator, R. Toniolo,
C. M. Lepienski, I. A. Hümmelgen Electronics Letters,
v. 40, n. 9, p. 566-567, 2004.
Organic-metal-semiconductor transistor with high gain, M. S. Meruvia, I. A. Hümmelgen, M. L. Sartorelli,
A. A. Pasa, W. Schawarzacher,
Applied Physics Letters, v. 84, n. 20, p. 3978-3980, 2004.
Photovoltaics based on thin electrodeposited bilayers of poly(3-methylthiophene)
and polypyrrole, I. A. Hümmelgen, R. Valaski, L. S. Roman, L. Micaroni,
E. C. Rios, R. M. Q. Mello, Physica Status Solidi A-Applied Research, Alemanha,
v. 201, n. 5, p. 842-849, 2004.
Poly(3-methylthiophene)-based photovoltaic devices prepared onto
tin-oxide/sulfonated-polyaniline electrodes, R. Valaski,
R. Lessmann, L. S. Roman, I. A. Hümmelgen, R. M. Q.
Mello, L. Micaroni, Electrochemistry Communications, Holanda, v. 6, p. 357-360, 2004.
Simple and fast organic device encapsulation using polyisobutene, R. Toniolo, I. A. Hümmelgen, Macromeolecular
Materials And Engineering, v. 289, n. 4, p. 311-314, 2004.
Surface roughness of electropolymerized
polyaniline and sulfonatedpolyaniline layers, L. F. O. Martins,
R. M. Q. Mello, M. L. Sartorelli, I. A. Hümmelgen, A.
A. Pasa, Physica Status Solidi A-Applied Research, Alemanha,
v. 201, n. 5, p. 902-907, 2004.
Thin copolymer-based light-emitting display made with fluorine-doped tin
oxide substrates, R. Lessmann, I. A.
Hümmelgen, Materials Research, v. 7, n. 13, p. 467-471, 2004.
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