Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Ivo A. Hümmelgen"'
Publikováno v:
ACS Omega, Vol 4, Iss 5, Pp 8324-8333 (2019)
Externí odkaz:
https://doaj.org/article/cfcbce3f16674f81bfe7109e8d856954
Publikováno v:
Materials Research, Vol 19, Iss 5, Pp 1201-1206 (2016)
We report on the preparation and performance enhancement of n-type low-voltage organic field effect transistors (FETs) based on cross-linked poly(vinyl alcohol) (cr-PVA) as gate dielectric and C60 fullerene as channel semiconductor. Transistors were
Externí odkaz:
https://doaj.org/article/ba8f87d9f7a0408f85f244a930fb9dd8
Publikováno v:
Polímeros, Vol 8, Iss 3, Pp 55-63 (1998)
Neste artigo é apresentada uma introdução aos polímeros conjugados, evidenciando-os como materiais portadores de um conjunto de propriedades que os torna altamente promissores para o uso em diodos emissores de luz e fotodetectores orgânicos. Ini
Externí odkaz:
https://doaj.org/article/d8da71f1f4eb489cbc546e5f26956aba
Autor:
Marcia W. C. C. Greenshields, Bruno B. Cunha, Neil J. Coville, Ida C. Pimentel, Maria A. C. Zawadneak, Steffani Dobrovolski, Mireli T. Souza, Ivo A. Hümmelgen
Publikováno v:
Chemosensors, Vol 4, Iss 3, p 19 (2016)
We use a set of three resistive sensors based on undoped multi-walled carbon nanotubes, B-doped multi-walled carbon nanotubes, and N-doped multi-walled carbon nanotubes to study fungal infection in strawberries inoculated with Rhizopus sp. or with As
Externí odkaz:
https://doaj.org/article/a63a3b2691a14269b3bf1c37084d190e
Autor:
Ivo A. Hümmelgen, Leandro Merces, Anil Kumar, José P. M. Serbena, Anne B. R. Abreu, Marlus Koehler, Ali Nawaz, Carlos César Bof Bufon
The improvement of electron transport in polymer semiconductors is highly desirable for realizing robust, large-area and low-cost organic integrated circuits. This work investigates the effect of regioregularity on the intrinsic hole and electron tra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f5d82437072cc4929f069112bd49cd7
https://doi.org/10.33774/chemrxiv-2021-n177f
https://doi.org/10.33774/chemrxiv-2021-n177f
Publikováno v:
Solar Energy Materials and Solar Cells. 193:141-148
We report on strategies that improve Se-derivative based solar cells performance. With this aim, a compact thin film based on ZnO nanoparticles is deposited onto fluorine doped tin oxide (FTO) as an electron-transport layer, in thermally evaporated G
Publikováno v:
Organic Electronics. 67:153-158
We report on thermoelectric devices prepared using chemically grown sulfonated polyaniline (SPAN) thin films on glass/ITO substrates (ITO: indium-tin oxide). Al was evaporated as top electrode, resulting in ITO/SPAN/Al sandwich device structure. The
Autor:
Ivo A. Hümmelgen, Ali Nawaz
Publikováno v:
Journal of Materials Science: Materials in Electronics. 30:5299-5326
The use of poly(vinyl alcohol) (PVA) as the gate dielectric in organic field-effect transistors (OFETs) constitutes an effective solution for lowering the operating voltage and for the realization of next-generation flexible electronic applications.
Publikováno v:
Journal of Materials Science: Materials in Electronics. 30:3552-3562
An in situ FTIR combined with online LCR method was used to study the sensing mechanism of the prepared sensors at room temperature. Our study revealed that the sensing mechanism for the sensors that were responsive was a total decomposition of the a
Autor:
Rodrigo C. Dias, Neil J. Coville, Boitumelo J. Matsoso, Clara Garcia-Martinez, Ivo A. Hümmelgen, Bridget K. Mutuma
Publikováno v:
New Journal of Chemistry. 43:8418-8427
This study reports on low nitrogen content-doped hollow carbon spheres (N-HCSs) for use as chemical vapour sensors. The N-HCSs were prepared by a template-assisted chemical vapour deposition method followed by nitrogen doping in an ammonia atmosphere