Charge Transport Phenomena
Mostrando 1-5 de 5 artigos, teses e dissertações.
-
1. Estudo das propriedades elétricas de células eletroquímicas emissoras de luz de derivados de polifluoreno / Electric properties study of polymer light-emitting electrochemical cells based on polyfluorene derivatives
Polymer light emitting electrochemical cells, PLECs, are organic electronic devices that have attracted commercial interest because they operate at low voltage and exhibit high performance without the need of specific electrodes such as indium tin oxide (ITO), calcium and others. This feature provides low cost of fabrication and exible devices. The charge in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/11/2011
-
2. Estudo de materiais, estruturas de dispositivos e fenômenos de transporte em sistemas fotovoltaicos híbridos orgânico-inorgânico / Study of materials, device structures and transport phenomena in hybrid photovoltaic systems
Recently a fast development in organic and hybrid photovoltaic field has been observed. Such devices are fabricated by organic semiconductors within components of a heterojunction, in which bulk heterojunctions obtained via interpenetrating networks at the sub-20-nm length scale. It permits the effective collection of photogenerated charge carriers even with
Publicado em: 2010
-
3. Study of organic light-emitting devices using rare earth and transition metals complexes. / Estudo de dispositivos orgânicos emissores de luz empregando complexos de terras raras e de metais de transição.
This work presents the study of the Rare Earth (RE) and Transition Metals (TM) complexes, as emissive layers of Organic Light-Emitting Devices (OLEDs) designed, built and electro-optically characterized. The thin films were thermally evaporated or spin-coated. This research started with the study of Europium complex changing its central ligand (CL), which sh
Publicado em: 2008
-
4. PROPRIEDADES DE TRANSPORTE DE SISTEMAS NANOSCÓPICOS: ÁTOMOS E MOLÉCULAS / TRANSPORT PROPERTIES OF NANOSCOPIC SYSTEMS: ATOMS AND MOLECULES
In this work we study the electronic transport in atomic and molecular structures. By using the Green´s function method, we address the problem of the electron-electron and electron-phonon interactions and their effects on the conductance of the system. We present a detailed study of the regime where these two interactions are simultaneously important and s
Publicado em: 2007
-
5. Isoelectric focusing of plant cell membranes
An isoelectric focusing method is described that discriminates plant cell organelle populations on the basis of surface charge. The isoelectric points (pI values) of the Golgi apparatus, the mitochondria, and putative plasma membrane from etiolated pea stem cells are reported. The pI of the pea Golgi apparatus is similar to that of the 35SO4-labeled membrane