Abstract
ABSTRACTThe luminescent characteristics of porous silicon are affected by the preparation conditions as well as subsequent treatment. Oxidation, which easily occurs in ambient conditions under illumination, greatly reduces the luminescence efficiency. Vertical inhomogeneity, which is inherent from the preparation procedure, can complicate interpretation of results, especially following treatments which non-uniformly affect the porous material. These results point out the need to pay careful attention to the sample's structure and history, as well as the necessity of controlling this degradation in order to realize practical luminescent devices.
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