Ink composition, Chalcogenide Semiconductor Film, Photovoltaic Device and Methods for Forming the same
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United States of America Patent
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Issued Date -
Nov 8, 2012
app pub date -
Apr 3, 2012
filing date -
May 6, 2011
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Abandoned
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Abstract
An ink composition includes a solvent system, a plurality of metal chalcogenide nanoparticles, at least one of metal ions and metal complex ions and a sodium source. The at least one of the metal ions and the metal complex ions are distributed on the surface of the metal chalcogenide nanoparticles and adapted to disperse the metal chalcogenide nanoparticles in the solvent system. The sodium source is dispersed in the solvent system and/or is included in at least one of the metal chalcogenide nanoparticle, the metal ions and the metal complex ions. The metals of the metal chalcogenide nanoparticles, the metal ions and the metal complex ions are selected from a group consisted of group I, group II, group III, group IV elements of periodic table, and sodium and include all metal elements of a chalcogenide semiconductor material.
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