Abstract
PbS is successfully synthesized in aqueous solutions by photochemical reactions. The solution contains Pb(CH 3COO) 2 and Na 2S 2O 3, and pH is controlled in an acidic region by adding H 2SO 4. The solution is irradiated with light from a high-pressure mercury-arc lamp. The PbS particles formed by the homogeneous nucleation in the solution are micro-crystalline and have nearly stoichiometric composition. PbS thin films are also formed on a Pd-treated glass sheet by the heterogeneous nucleation.
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