| 摘要 |
<p>This invention relates to selenide powders for use in dispersions, pastes or inks suitable for the manufacture of photovoltaic cells such as CIGS or CIGSS based solar cells. A synthesis process is proposed for the manufacture of submicron or nanoparticulate powder comprising selenides of a metal or a metal mixture, comprising the steps of: - selecting an oxygen-bearing precursor of said metal or metal mixture; - mixing said oxygen-bearing precursor with an at least stoichiometric amount of selenium; and, - reducing the mixture with H2 at a temperature sufficient to ensure the reaction with the oxygen of the precursor, and the formation of selenides. The powders can be deposited on a substrate and annealed without the need for a separate selenization step. The use of H2Se as a Se source, which is a most toxic gas, is thus avoided.</p> |
