Lg Chem, Ltd

Eun Ju Park

Seokhee Yoon

Seokhyun Yoon

Hosub Lee

Joong Jin Han

Hyun Woog Ryu

Kwonsu Jung

The present invention relates to a method of preparing a polyphenylene sulfide and a high-viscosity polyphenylene sulfide prepared using the method. In this method, the ratio of an organic phase to an aqueous phase is controlled by controlling dehydration conditions, so that high viscosity may be realized without adversely affecting a reaction or physical properties during preparation of the polyphenylene sulfide.

Method of preparing polyphenylene sulfide and high-viscosity polyphenylene sulfide prepared using the same

Disclosed are a single-source precursor for synthesizing metal chalcogenide nanoparticles for producing a light absorption layer of solar cells comprising a Group VI element linked as a ligand to any one metal selected from the group consisting of copper (Cu), zinc (Zn) and tin (Sn), metal chalcogenide nanoparticles produced by heat-treating at least one type of the single-source precursor, a method of preparing the same, a thin film produced using the same and a method of producing the thin film.

Method of preparing metal chalcogenide nanoparticles and method of producing light absorption layer thin film based thereon

Disclosed are a precursor for preparing a light absorption layer of a solar cell including (a) an aggregate-phase composite including a first phase including a copper (Cu)-tin (Sn) bimetallic metal and a second phase including zinc (Zn)-containing chalcogenide, or including the first phase including a copper (Cu)-tin (Sn) bimetallic metal, the second phase including zinc (Zn)-containing chalcogenide and a third phase including copper (Cu)-containing chalcogenide; or (b) core-shell structured nanoparticles including a core including copper (Cu)-tin (Sn) bimetallic metal nanoparticles and a shell including zinc (Zn)-containing chalcogenide, or the zinc (Zn)-containing chalcogenide and copper (Cu)-containing chalcogenide; or (c) a mixture thereof, and a method of preparing the same.

Precursor for preparing light absorption layer of solar cells and method of preparing the same

Disclosed are an ink composition for manufacturing a light absorption layer of solar cells and a method of manufacturing a thin film using the same. Particularly, an ink composition for manufacturing a light absorption layer of solar cells including core-shell structure nanoparticles including a core including a copper (Cu)-containing chalcogenide and a shell including a zinc (Zn)-containing chalcogenide; and tin (Sn)-containing bimetallic or intermetallic metal nanoparticles, or a tin (Sn)-containing chalcogenide nanoparticles, dispersed in a solvent, and a method of manufacturing a thin film using the same are disclosed.

Ink composition for manufacturing light absorption layer of solar cells and method of manufacturing thin film using the same

Disclosed are three-layer core-shell structure nanoparticles used to form a light absorption layer of solar cells including a core including a copper (Cu)-containing chalcogenide, and (i) a first shell including a tin (Sn)-containing chalcogenide and a second shell including a zinc (Zn)-containing chalcogenide; or (ii) a first shell including a zinc (Zn)-containing chalcogenide and a second shell including a tin (Sn)-containing chalcogenide, and a method of manufacturing the same.

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Daejeon, South Korea

Eun Ju Park