Scientist in charge: M. Isabel Alonso

SCIENTIFIC & TECHNICAL SERVICES

Molecular Beam Epitaxy (MBE)

The Laboratory of MBE (L-MBE) is a scientific service developing its own research and supporting the research of other groups based on group IV semiconductor heterostructures.

16-period Si1–xGex superlattice used to study thermal transport. The right panel shows one of the compositionally graded layers that are cladded between Si spacers.

Scientific equipment available

Ultra-high vacuum (UHV) chamber to deposit type IV (Si, Ge) semiconductors by evaporation. C, B, Sb available for doping. Deposition is done in a variety of substrates compatible with UHV, usually heated single-crystal wafers of Si (or SOI).

USE OF THE SERVICE IN 2020

The L-MBE is always operated in self-service mode backed up by the expert users, Dr. M. Garriga and Dr. M. I. Alonso. In 2020 it was employed for research tasks in two different projects of the “NANOPTO” group, led by IPs Dr. A. R. Goñi and Dr. M. Campoy-Quiles (with 77% of the time devoted to research of structures for harvesting infrared solar energy) and by Dr. J. S. Reparaz (using 23% of the time in research of structures for development of nanoscale thermal sensors).

Outreach, publications and projects in which the service has participated

Main publications of the service in 2020:

Beating the Thermal Conductivity Alloy Limit Using Long-Period Compositionally Graded Si1–xGex Superlattices
P. Ferrando-Villalba, Shunda Chen, A. F. Lopeandía, F. X. Alvarez, M. I. Alonso, M. Garriga, J. Santiso, G. Garcia, A. R. Goñi, D. Donadio, and J. Rodríguez-Viejo.
The Journal of Physical Chemistry C 2020, 124, 36, 19864–19872 10.1021/acs.jpcc.0c06410

Coordination
Anna May-Masnou This email address is being protected from spambots. You need JavaScript enabled to view it.
Redaction
Anna May-Masnou This email address is being protected from spambots. You need JavaScript enabled to view it.
Web & Graphic Editor
José Antonio Gómez  This email address is being protected from spambots. You need JavaScript enabled to view it.

Webmasters
José Antonio Gómez This email address is being protected from spambots. You need JavaScript enabled to view it.
Albert Moreno     This email address is being protected from spambots. You need JavaScript enabled to view it.
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