Figure 6
From: Hydrogen and the Light-Induced Bias Instability Mechanism in Amorphous Oxide Semiconductors
(a) A dissociated water molecule in amorphous ZnO, adjacent to two oxygen vacancies. (b) the transition state where two hydrogens are moving to one of the vacancies (motion arrowed), and the oxygen is moving to the other vacancy. (c) Final state in which the water’s oxygen has reached one of the vacancies, and the two hydrogens have reached the other oxygen vacancy, thereby passivating the two vacancies. Blue and turquoise balls are the Zn atoms adjacent to each of the O vacancies for guidance. White balls = H, as noted in the color key.
