Affiliation:
1. National Physical Research Laboratory, CSIR, Pretoria, South Africa
Abstract
In addition to the procedure of partial oxidation of lead sulfide layers in order to increase their photoconductivity it was found that reduction may have a similar effect.
When used as additives to the conventional thiourea-plumbite solution, the compounds aminoiminomethanesulfinic acid (1), rongalite or sodium dithionite, which all may form sulfoxylate in aqueous solution, enhance the photoconductivity of the deposited layers.
Addition of H2O2 or PbO2 has a similar, less pronounced effect, which may also be ascribed to the intermediate oxidation of thiourea to 1.
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7 articles.
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