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Ciclo de Seminarios 2015

Un destacado profesional invitado expone acerca de cuestiones de interés para la comunidad científica, no necesariamente vinculados directamente a temas de física. Una actividad que cuenta con más de 45 años de historia. La exposición tiene una duración de una hora y a su término la sesión queda abierta a las preguntas y los comentarios del auditorio. Tienen lugar cada dos semanas, los viernes a las 10:30 hrs. en el Auditorio "Emma Pérez Ferreira" del Edificio TANDAR, a menos que haya una indicación en contrario. Los asistentes son convidados con un café 15 minutos antes de la exposición.

Próxima charla del ciclo:

 
* AVISO *
Notar el lugar especial
La exposición será en idioma inglés

2015 4 SEP

Viernes 4 de Septiembre
10:30 hs. - Aula Nivel 0 - Edificio TANDAR
Edificio TANDAR
"Integration of III/V Semiconductors on Silicon Substrates"
Dra. Kerstin Volz (*)
Faculty of Physics and Material Sciences Center, Philipps-Universität Marburg, Germany
RESUMEN: The combination of the mature Silicon technology with the advantageous optical and electrical properties of III/V semiconductors opens possibilities for a wide field of novel optoelectronic devices like high efficient lasers and solar cells on silicon substrates as well as high mobility n-type III/V channel layers. Especially for the design of optoelectronic integrated circuits on Silicon, the III/V semiconductor should have a direct band-gap and be lattice matched to the exactly oriented Si(001) substrates. The GaP-based, dilute nitride material system Ga(NAsP) fulfils these prerequisites. The talk will review our current understanding of this material system as well as of the structural properties of Ga(NAsP)/(BGa)(AsP)/Si(001) heterostructures with a special emphasis on the GaP/Si(001) hetero-interface. Furthermore, I give an overview of the Marburg activities in semiconductor research.

* Prof. Kerstin Volz is since 2009 Heisenberg Professor for Experimental Physics and Co-Leader at the STRL (Structure and Technology Research Lab) of Philipps University Marburg. She received her diploma in physics from Augsburg University in 1996. In 1999 she obtained her PhD from the same university. After several research visits at Osaka National Research Institute and Nagasaki Institute of Technology, as well as a postdoctoral stay at Stanford University, she joined Philipps-Universität Marburg as a Junior Group Leader (in the framework of a Topical Research Group of the DFG). After a professorship at the Humboldt-Universität of Berlin, she was appointed as a professor in Marburg. She serves there as speaker of the Research Training Group "Functionalization of Semiconductors", which started in 2012. She is also the vice-coordinator of the collaborative research center "Structure and Dynamics of Internal Interfaces". She has received the following awards: Graduate Student Award of EMRS (1996); Feodor-Lynen scholarship of Alexander von Humboldt foundation (2001); guest professorship of Humboldt Universität of Berlin (2008); Heisenberg professorship of DFG (2008); and the Patricia Pahamy Prize for best teaching (2009). Her research interests include the synthesis (MOVPE) and quantitative transmission electron microscopy of novel functional materials.
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