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Light‐induced neutralization of hydrogen shallow donors in zinc oxide
Author(s) -
Nickel N. H.
Publication year - 2006
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200642208
Subject(s) - zinc , infrared , infrared spectroscopy , chemistry , neutralization , annealing (glass) , hydrogen , oxide , shallow donor , analytical chemistry (journal) , photochemistry , materials science , optics , physics , metallurgy , impurity , organic chemistry , antibody , immunology , biology , chromatography
Infrared 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)