Abstract
AbstractInfrared absorption measurements of the O–H shallow donor complex in zinc oxide show that its vibrational mode is very sensitive to sub band‐gap illumination. Upon illumination the intensity of the O–H vibrational line exhibits a pronounced decrease. This effect is completely reversible. Annealing the specimens at temperatures above 30 K restores the O–H vibrational line. The decrease and increase of the O–H absorption line is caused by a change of the infrared effective charge due to neutralization and ionization, respectively, of H shallow donors. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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