Yewchung Sermon Wu

Title: Yewchung Sermon Wu: Innovator in Crystal Defect Identification

Introduction

Yewchung Sermon Wu is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of materials science, particularly in the identification of defects in crystals. His innovative approach has implications for various applications in semiconductor technology.

Latest Patents

Yewchung Sermon Wu holds a patent for a method of identifying defects in crystals. This method involves slicing a silicon carbide crystal to obtain a test piece, followed by an etching process. The etching conditions utilize an etchant that includes potassium hydroxide, performed at temperatures ranging from 400° C. to 550° C. in an environment where dry air or oxygen is introduced. This process results in the formation of etching pits of threading edge dislocations (TED) and threading screw dislocations (TSD) in the test piece. The diameter ratio of the etching pits observed by an optical microscope is maintained between 0.2 to 0.5.

Career Highlights

Yewchung Sermon Wu is currently employed at GlobalWafers Co., Ltd., where he continues to advance his research and development efforts. His work has been instrumental in enhancing the understanding of crystal defects, which is crucial for improving the quality of semiconductor materials.

Collaborations

Yewchung has collaborated with notable colleagues, including Bing-Yue Tsui and Tsan-Feng Lu. Their combined expertise contributes to the innovative research environment at GlobalWafers Co., Ltd.

Conclusion

Yewchung Sermon Wu's contributions to the field of crystal defect identification exemplify the importance of innovation in materials science. His patented method not only enhances the understanding of crystal defects but also paves the way for advancements in semiconductor technology.