Professor Kwon's Lab

We study the Pt catalyst encapsulated by carbon shell.  The aim of this study is to figure out the methodology for modulating carbon shell which covers Pt nanoparticle. Some previous study already suggested the mean to make carbon shell coated Pt nanoparticle. However, our approach is more simple and effective than any other approach. As one of the applications, the catalyst is introduced to fuel cell because it is very durable and has reactant selective property.

Cu metallization process requires metal seed layer which makes electrodeposition possible on non-conductive substrate. Metal seed layers are usually formed by electroless process (chemical reduction process) and the process uses hazardous chemicals. This study suggests environmentally friendly way to form seed layer and it is introduced to 12-layered any layer multi-flexible PCB processes.

There has been various studies for introducing polyaniline to fuel cell as one of component of catalyst or as additive in making catalyst. Every one follows a routine approach of using polyanilne as polymer state. However, polyanline can be used from monomer state to make a composite of Pt and polyaniline. Through the study, we have suggested a new way to use polyaniline in fuel cell field.

A superfilling of Cu in fine-pitch trench or via is important technology to realize reliable metallization. However, the superfilling becomes more difficult as the pitch size shrinks. Here, we tried several approaches such as Cu deposition without seed layer and Cu-Ag alloy deposition to enhance reliability. Through the study, we could get meaningful results.