I. Hümmelgen

发表

High mobility organic field-effect transistors based on defect-free regioregular poly(3-hexylthiophene-2,5-diyl)

I. A. Hümmelgen, Ashok Kumar, A. Pal, 2016 .

Hollow carbon spheres and a hollow carbon sphere/polyvinylpyrrolidone composite as ammonia sensors

I. A. Hümmelgen, D. Wamwangi, N. Coville, 2017 .

Poly(vinyl alcohol) gate dielectric in organic field-effect transistors

I. A. Hümmelgen, A. Nawaz, I. Hümmelgen, 2019, Journal of Materials Science: Materials in Electronics.

Experimental and modeling study of low-voltage field-effect transistors fabricated with molecularly aligned copolymer floating films

I. A. Hümmelgen, P. Sonar, A. Nawaz, 2018 .

Ultra-high mobility in defect-free poly(3-hexylthiophene-2,5-diyl) field-effect transistors through supra-molecular alignment

I. A. Hümmelgen, Ashok Kumar, A. Nawaz, 2017 .

Polymer-dielectric molecular interactions in defect-free poly(3-hexylthiophene): dependence and consequences of regioregularity on transistor charge transport properties

I. A. Hümmelgen, Anilesh Kumar, M. Koehler, 2017 .

Organic electronic solid state device: electrochemistry of material preparation

I. A. Hümmelgen, I. Hümmelgen, 2017, Journal of Solid State Electrochemistry.

Tin Oxide as a Cathode in Organic Light‐Emitting Diodes

I. A. Hümmelgen, A. Arias, J. Lima, 1998 .

Changing inter-molecular spin-orbital coupling for generating magnetic field effects in phosphorescent organic semiconductors

Carlos Frederico de Oliveira Graeff, I. A. Hümmelgen, M. Shao, 2012 .

Hybrid vertical architecture transistor with magnetic-field-dependent current amplification as organic magnetocurrent investigation tool

I. A. Hümmelgen, A. Yusoff, I. Hümmelgen, 2009 .

Very high magnetocurrent in tris-(8-hydroxyquinoline) aluminum-based bipolar charge injection devices

Wilson José da Silva, I. A. Hümmelgen, A. Yusoff, 2009 .

Magnetic field release of trapped charges in poly(fluorenylenevinylene)s

Carlos Frederico de Oliveira Graeff, I. A. Hümmelgen, J. Freire, 2007 .

Hierarchical Nanoflowers of Colloidal WS2 and Their Potential Gas Sensing Properties for Room Temperature Detection of Ammonia

I. A. Hümmelgen, M. Moloto, N. Moloto, 2021, Processes.

Limiting the Oxidation of WS2 Nanostructures by Oleylamine Surface Passivation for Room Temperature NH3 Sensing

I. A. Hümmelgen, M. Moloto, T. Kolokoto, 2020 .

Nitrogen-doped hollow carbon spheres as chemical vapour sensors

I. A. Hümmelgen, N. Coville, B. Mutuma, 2019, New Journal of Chemistry.

Giant Seebeck coefficient in thin sulfonated polyaniline film based devices

I. A. Hümmelgen, Isidro Cruz-Cruz, Marcelo H. Penteado, 2019, Organic Electronics.

Polymer Solar Cells Using Single-Wall Carbon Nanotubes Modified with Thiophene Pedant Groups

I. A. Hümmelgen, A. Nogueira, C. R. Correia, 2007 .

Low voltage vertical organic field-effect transistor with polyvinyl alcohol as gate insulator

I. A. Hümmelgen, K. Seidel, W. S. Machado, 2011 .

GaxSe10-x based solar cells: Some alternatives for the improvement in their performance parameters

I. A. Hümmelgen, Isidro Cruz-Cruz, A. Hoff, 2019, Solar Energy Materials and Solar Cells.

Influence of an interfacial cesium oxide thin layer in the performance and internal dynamic processes of GaSe9 solar cells

I. A. Hümmelgen, Isidro Cruz-Cruz, A. Hoff, 2017 .

Morphological, optical and electrical properties of GaSe9 films and its application in photovoltaic devices

Isidro Cruz-Cruz, A. Hoff, K. D. Machado, 2016, Journal of Materials Science: Materials in Electronics.

Copper phthalocyanine based vertical organic field effect transistor with naturally patterned tin intermediate grid electrode

I. A. Hümmelgen, Isidro Cruz-Cruz, Adan Kvitschal, 2015 .

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

I. A. Hümmelgen, Dongge Ma, J. Y. Huang, 2008 .

Surface roughness of electropolymerized polyaniline and sulfonated polyaniline layers

I. A. Hümmelgen, Regina M. Q. Mello, L. F. Martins, 2004 .

Electrochemically deposited poly(3-methylthiophene) performance in single layer photovoltaic devices

I. A. Hümmelgen, L. Micaroni, R. Valaski, 2003, The European physical journal. E, Soft matter.

Physical and tribological properties of hard amorphous DLC films deposited on different substrates

V. P. Poliakov, I. A. Hümmelgen, C. M. Lepienski, 2004 .

Modification of the charge transport properties of the copper phthalocyanine/poly(vinyl alcohol) interface using cationic or anionic surfactant for field-effect transistor performance enhancement

I. A. Hümmelgen, M. Koehler, A. Nawaz, 2015 .

Improved charge carrier mobility in copper phthalocyanine based field effect transistors by insertion of a thin poorly conducting layer as gate insulator extension

M. Koehler, A. Tavares, M. Meruvia, 2015 .

Tristimulus mathematical treatment application for monitoring fungi infestation evolution in melon using the electrical response of carbon nanostructure-polymer composite based sensors

I. A. Hümmelgen, A. Bozza, N. Coville, 2013 .

Electronic detection of Drechslera sp. fungi in charentais melon ( Cucumis melo Naudin) using carbon-nanostructure-based sensors.

I. A. Hümmelgen, N. Coville, M. Mamo, 2012, Journal of agricultural and food chemistry.

Concomitant in Situ FTIR and Impedance Measurements To Address the 2-Methylcyclopentanone Vapor-Sensing Mechanism in MnO2–Polymer Nanocomposites

I. A. Hümmelgen, V. Mavumengwana, V. Okechukwu, 2019, ACS omega.

Electrode material dependent p- or n-like thermoelectric behavior of single electrochemically synthesized poly(2,2′–bithiophene) layer—application to thin film thermoelectric generator

I. A. Hümmelgen, Bin Hu, A. Tavares, 2016, Journal of Solid State Electrochemistry.

Hybrid vertical transistor based on controlled lateral channel overflow

M. F. Ahmed, Regina M. Q. Mello, M. Koehler, 2012 .

Regional approximation approach to space charge limited tunneling injection in polymeric devices

I. A. Hümmelgen, M. Koehler, I. Hümmelgen, 2000 .

Determination of electron mobility in a blue-emitting alternating block copolymer by space-charge-limited current measurements

F. E. Karasz, I. A. Hümmelgen, X. Jing, 1999 .

1,3,4-Oxadiazole based ruthenium amphiphile for Langmuir-Blodgett films and photo-responsive logic gate construction

I. A. Hümmelgen, H. Winnischofer, H. Toma, 2020 .

Poly(vinyl alcohol) gate dielectric surface treatment with vitamin C for poly(3-hexylthiophene-2,5-diyl) based field effect transistors performance improvement

I. A. Hümmelgen, Arunandan Kumar, A. Nawaz, 2015 .

Preparation and Characterization of Novel Hybrid Materials Formed from (Ti,Sn)O2 Nanoparticles and Polyaniline

I. A. Hümmelgen, A. Zarbin, M. Meruvia, 2003 .

Low-Voltage Poly(3-Hexylthiophene)/Poly(Vinyl Alcohol) Field-Effect Transistor and Inverter

W. S. Machado, I. A. Hummelgen, I. Hümmelgen, 2012, IEEE Transactions on Electron Devices.

Hybrid Molecular/Inorganic Semiconductor Transistors in Vertical Architectures

I. A. Hümmelgen, M. Meruvia, I. Hümmelgen, 2006 .

Fungi Active Microbial Metabolism Detection of Rhizopus sp. and Aspergillus sp. Section Nigri on Strawberry Using a Set of Chemical Sensors Based on Carbon Nanostructures

I. A. Hümmelgen, N. Coville, M. Zawadneak, 2016 .

Tristimulus analysis for sensors set with either positive or negative sensitivities—determination of the relative concentration of an analyte in a binary mixture

Rafael Rodrigues, I. Hümmelgen, 2016, Journal of Solid State Electrochemistry.

Colloidal InSe nanostructures: Effect of morphology on their chemical sensitivity to methanol and formaldehyde fumes

I. A. Hümmelgen, M. Moloto, N. Moloto, 2016 .

AC-conductance and capacitance measurements for ethanol vapor detection using carbon nanotube-polyvinyl alcohol composite based devices.

S. Mhlanga, V. Baranauskas, N. Coville, 2011, Journal of nanoscience and nanotechnology.

Hydrostatic pressure sensors based on carbon spheres dispersed in polyvinyl alcohol prepared using hexadecyltrimethylammonium bromide as surfactant and water as solvent

I. A. Hümmelgen, N. Coville, Rafael Rodrigues, 2014 .

Undoped, nitrogen-doped and boron-doped multiwalled carbon nanotube/poly(vinyl alcohol) composite as active layer in simple hydrostatic pressure sensors

I. A. Hümmelgen, Z. Tetana, N. Coville, 2013, Journal of Materials Science: Materials in Electronics.

A comparative study on hydrostatic pressure response of sensors based on N-doped, B-doped and undoped carbon-sphere poly (vinyl alcohol) composites

I. A. Hümmelgen, N. Coville, M. Mamo, 2012, Journal of Materials Science: Materials in Electronics.

Hydrostatic pressure sensor based on carbon sphere – polyvinyl alcohol composites

Neil J. Coville, Messai A. Mamo, Ivo A. Hümmelgen, 2010 .

Carbon nanotube–polybithiophene photovoltaic devices with high open‐circuit voltage

I. A. Hümmelgen, A. P. Santos, L. Micaroni, 2007 .

High open-circuit voltage single-layer polybithiophene-based photovoltaic devices

I. A. Hümmelgen, L. Micaroni, E. L. Leguenza, 2007 .

Hybrid magnetic transistor

J. Gruber, M. Meruvia, A. Benvenho, 2006 .

Magnetic metal-base transistor with organic emitter

M. Bonfim, A. A. Pasa, W. Schwarzacher, 2005 .

All-organic vertical transistor in an analogous n-semiconductor/metal/p-semiconductor trilayer structure

A. Tavares, J. Serbena, M. Meruvia, 2014 .

Poly(Vinyl Alcohol) Gate Dielectric Treated With Anionic Surfactant in C60 Fullerene-Based n-Channel Organic Field Effect Transistors

I. A. Hümmelgen, A. Nawaz, C. D. Col, 2016 .

Determination of Electron and Hole Mobility in Poly(3-hexylthiophene) Using Space-Charge-Limited-Current Measurements

I. Hümmelgen, Mohammad F. Ahmed, 2013 .

A surfactant dispersed N-doped carbon sphere-poly(vinyl alcohol) composite as relative humidity sensor

I. A. Hümmelgen, N. Coville, M. Mamo, 2015, Journal of Materials Science: Materials in Electronics.

All-organic bipolar vertical transistor with sulfonated polyaniline base energy barriers favoring recombination emitter-collector current

I. A. Hümmelgen, A. Tavares, M. Meruvia, 2018 .

Considerations about the electrochemical estimation of the ionization potential of conducting polymers

I. A. Hümmelgen, L. Micaroni, F. Nart, 2002 .

Naphthalimide-derivative with blue electroluminescence for OLED applications

Lucimara S. Roman, R. Reyes, Ivo A. Hümmelgen, 2015 .

Electrical and optical properties of poly(2-dodecanoylsulfanyl-p-phenylenevnylene) and its application in electroluminescent devices

L. S. Roman, I. A. Hümmelgen, R. Patyk, 2010 .

A Novel Ferrocene-DOPPV Conjugated Copolymer

I. A. Hümmelgen, J. Gruber, J. Serbena, 2006 .

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

I. A. Hümmelgen, R. Lessmann, Regina M. Q. Mello, 2006 .

Magnetoresistive hybrid transistor in vertical architecture

Carlos Frederico de Oliveira Graeff, J. Gomez, J. Gruber, 2005 .

A novel soluble poly(fluorenylenevinylene) conjugated polymer: synthesis, characterization and application to optoelectronic devices

I. A. Hümmelgen, R. Lessmann, J. Gruber, 2005 .

Thin copolymer-cased light-emitting display made with fluorine-foped tin oxide substrates

I. A. Hümmelgen, R. Lessmann, I. Hümmelgen, 2004 .

Photovoltaics based on thin electrodeposited bilayers of poly(3-methylthiophene) and polypyrrole

I. A. Hümmelgen, L. Micaroni, Regina M. Q. Mello, 2004 .

Copper phthalocyanine based hybrid p-type permeable-base transistor in vertical architecture

Dongge Ma, Chengang Feng, M. Meruvia, 2006 .