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SENSITIZATION OF PHOTOCONDUCTIVE EFFECTS IN ZINC OXIDE*,†
Author(s) -
Grossweiner Leonard I.
Publication year - 1968
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1968.tb05885.x
Subject(s) - photoconductivity , zinc , adsorption , electron , oxide , photochemistry , molecule , crystallite , conduction band , chemistry , materials science , acceptor , electron acceptor , sensitization , chemical physics , optoelectronics , physics , condensed matter physics , organic chemistry , crystallography , quantum mechanics , immunology , biology
— The current status of research on sensitized photoconductive effects in zinc oxide is reviewed. The various types of chemical and spectral photosensitization processes observed in polycrystalline specimens can be explained qualitatively with a generalized electron acceptor molecule (EAM) model. in which electronegative surface agents trap zinc oxide conduction electrons in the dark and illumination causes a release of the trapped electrons. The EAM may be an adsorbed gas or vapor, adsorbed dye molecules, or an aggregated dye film, depending on the particular photoeffect.