Several titanium-hydrogen (TiH) complexes are generated in crystalline
Si by wet chemical etching or a remote hydrogen plasma treatment. We
identify two electrically active (E(C)-0.31 eV, E(C)-0.57 eV) and one
electrically inactive TiH complex. The passive TiH complex dissociates
at temperatures above 570 K, leading to an increase in the interstiti
al Ti concentration.