Der Einfluß von Sulfoxylaten auf die Photoleitfähigkeit chemisch hergestellter Bleisulfidschichten / The Influence of Sulfoxylates on the Photoconductivity of Chemically Deposited Lead Sulfide Layers

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.

Structural, Electrical, and Photoelectrical Properties of Cd[sub x]Pb[sub 1−x]S Thin Films Prepared by Chemical Bath Deposition

“…The chemical bath deposition ͑CBD͒ method has become very popular in recent decades, especially for thin-film deposition, due to its low cost ͑no expensive and sophisticated vacuum equipment re-quired͒, ease of handling, and ease of application to many compounds such as sulfides and selenides ͑e.g., ZnS, CdS, PbS, CdSe, PbSe, CuS 2 , and Bi 2 S 3 ). [1][2][3][4][5][6] The deposition can be performed on various substrates, such as glass, metal, polymer, or single crystal. The deposited films are usually polycrystalline, but, using singlecrystal substrates and controlling the deposition conditions, epitaxial films can also be obtained.…”