Laplace DLTS investigation of transition metal-hydrogen complexes in germanium

Abstract

Transition metal-hydrogen complexes in the Mg2NiH4 and Mg2FeH6 crystals described by quantum chemical calculations Abstract. High-resolution Laplace DLTS technique has been used to examine fine structures in the carrier emission processes hidden in the broad conventional DLTS peaks recorded in germanium samples, doped by several transition metals -Ni, Cr and Fe. These structures are found to be correlated with the acceptors, related to mentioned impurities, and also with possible presence of hydrogen-related defects. A link explaining interaction of transition metals with hydrogen due to the applied chemical treatment during sample preparation process is revealed and compared to what is known in silicon.