Atomic scale structure of (001) hydrogen-induced platelets in germanium.
An accurate characterization of the structure of hydrogen-induced platelets is a prerequisite for investigating both hydrogen aggregation and formation of larger defects. On the basis of quantitative high resolution transmission electron microscopy experiments combined with extensive first principles calculations, we present a model for the atomic structure of (001) hydrogen-induced platelets in germanium. It involves broken Ge-Ge bonds in the [001] direction that are dihydride passivated, vacancies, and trapped H(2) molecules, showing that the species involved in platelet formation depend on the habit plane. This model explains all previous experimental observations.
David
Marie-Laure
ML
Laboratoire PHYMAT, Université de Poitiers/CNRS UMR 6630, 86962 Futuroscope-Chasseneuil cedex, France.
Pizzagalli
Laurent
L
Pailloux
Fréderic
F
Barbot
Jean François
JF