Melt stabilization and vapor-phase synthesis of cesium germanium halides
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsNicholas J. Condon, Steven R. Bowman, Shawn P. O'Connor
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Abstract
The method described herein allows for melt stabilization and vapor-phase synthesis of a cesium germanium halide utilizing germanium dihalides formed in situ. This disclosure allows for the melting of cesium germanium halides without decomposition, which allows for growing crystals of these materials from the melt. This disclosure allows for a direct synthesis of these materials without the use of water or the introduction of other possible contaminants.
Claims13
A method of vapor-phase synthesis of a cesium germanium halide, comprising:
- utilizing germanium dihalides as cover gases;
- reacting Ge(0) with GeX4 vapor and producing germanium dihalide vapor in situ;
- and
- reacting the germanium dihalide vapor with CsX;
- and
- producing CsGeX3.
A method of vapor-phase synthesis of a cesium germanium halide comprising:
- loading a charge of CGC into a first tube;
- loading a charge of Ge(0) into a second tube;
- loading the first tube and the second tube into a vessel;
- capping the vessel with a plug and thereby sealing;
- fitting a transfer tube into the plug;
- placing the vessel with the first tube and the second tube into a furnace;
- evacuating and removing the room air and any water;
- injecting GeCl4 into the vessel;
- boiling the GeCl4;
- filling the vessel to its vapor pressure;
- increasing the temperature of the furnace to about 360 degrees C.;
- melting the CGC;
- reacting the GeCl4 with the Ge(0) and generating GeCl2 gas;
- and
- reacting the GeCl2 gas with CsX and producing CsGeX3.
A method of vapor-phase synthesis of a cesium germanium halide comprising:
- loading a charge of CsCl beads into a first tube with an opening;
- placing a third tube near the opening for collecting the product;
- loading a charge of Ge(0) into a second tube;
- loading the first tube and the second tube into a vessel;
- capping the vessel with a plug and thereby sealing;
- placing the vessel with the first tube and the second tube into a furnace;
- evacuating and removing the room air and any water;
- injecting GeCl4 into the vessel;
- boiling the GeCl4;
- filling the vessel to its vapor pressure;
- increasing the temperature of the furnace to about 360 degrees C.;
- reacting the GeCl4 with the Ge(0) and generating GeCl2 gas;
- reacting the GeCl2 gas with CsCl beads;
- and
- producing CsGeX3.
A cesium germanium halide that is formed in situ by vapor-phase synthesis and is composed of 85% CGC and 15% CsCl.
Dependencies are inferred from the claim text.