Helmut Foell

Title: Helmut Foell: Innovator in Semiconductor Technology

Introduction

Helmut Foell is a prominent inventor based in Munich, Germany. He has made significant contributions to the field of semiconductor technology, holding a total of 10 patents. His innovative work has paved the way for advancements in semiconductor processing and analysis methods.

Latest Patents

Among his latest patents is a method and apparatus for large-area electrical contacting of semiconductor crystal wafers. This invention involves fixing a semiconductor crystal wafer between two electrolyte-filled cells, allowing for effective electrical contact. A DC voltage is applied between the electrodes in the electrolyte, enabling current flow through the semiconductor crystal body when illuminated. This method is particularly beneficial for high-impedance semiconductor crystal wafers and those with doping steps or pn junctions. Another notable patent is a method for determining the recombination rate of minority carriers. This two-stage measuring method utilizes cells with electrodes applied to both surfaces of a semiconductor wafer, allowing for precise calculations of recombination speed based on measured photo currents.

Career Highlights

Helmut Foell is associated with Siemens Aktiengesellschaft, a leading company in technology and engineering. His work at Siemens has allowed him to develop and refine his innovative ideas in semiconductor technology, contributing to the company's reputation for excellence in the field.

Collaborations

Throughout his career, Helmut has collaborated with notable colleagues such as Volker Lehmann and Josef Grabmaier. These collaborations have fostered a creative environment that has led to significant advancements in their respective fields.

Conclusion

Helmut Foell's contributions to semiconductor technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence the development of advanced semiconductor processing methods.