Process for producing light absorption layer of solar cell
AssigneeFujitsu Limited
InventorTomio Hirano
Life of this patent
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Abstract
A process for producing a light absorption layer of a solar cell is disclosed, in which prior to heat-treatment, at least two of the following steps are performed in combination: (1) electrodeposition of a copper layer including selenium particles, (2) electrodeposition of an indium layer including selenium particles, (3) electrodeposition of a copper layer not including selenium, and (4) electrodeposition of an indium layer not including selenium. Control of copper, indium, and selenium contents becomes easier with this process.
Claims9
A process for producing a light absorption layer for a solar cell, comprising the steps of:
- implementing at least two steps, in combination, of forming on a conductive substrate (1) an electrodeposited copper layer which contains dispersed selenium particles by use of a copper plating bath with a dispersion of fine particles of selenium suspended therein and (2) forming an electrodeposited indium layer thereon which contains dispersed selenium particles by use of an indium plating bath with a dispersion of fine particles of selenium suspended therein to form a multi-layer electrodeposited layer including copper, indium, and selenium on said conductive substrate;
- and
- heat-treating the multi-layer electrodeposited layer to convert it into a ternary alloy layer of copper-indium-selenium.
A process for producing a light absorption layer for a solar cell, comprising the steps of:
- implementing at least two steps, in combination, of forming on a conductive substrate (1) an electrodeposited copper layer which contains dispersed selenium particles by use of a copper plating bath with a dispersion of fine particles of selenium suspended therein and (2) forming an electrodeposited indium layer thereon by use of an indium plating bath to form a multi-layer electrodeposited layer including copper, indium, and selenium on said conductive substrate;
- and
- heat-treating the multi-layer electrodeposited layer to convert it into a ternary alloy layer of copper-indium-selenium.
A process for producing a light absorption layer for a solar cell, comprising the steps of:
- implementing at least two steps, in combination, of forming on a conductive substrate (1) an electrodeposited copper layer by use of a copper plating bath and (2) forming an electrodeposited indium layer thereon which contains dispersed selenium particles by use of an indium plating bath with a dispersion of fine particles of selenium suspended therein to form a multi-layer electrodeposited layer including copper, indium, and selenium on said conductive substrate;
- and
- heat-treating the multi-layer type electrodeposition layer to convert it into a ternary alloy layer of copper-indium-selenium.
Dependencies are inferred from the claim text.