Location History:
- Kempfenhausen, DE (1977 - 1981)
- Starnberg, DE (1985 - 1987)
- Berg, DE (1980 - 1992)
Company Filing History:
Years Active: 1977-1992
Title: Innovations by Josef Grabmaier: Pioneering Advances in Solar Technology
Introduction
Josef Grabmaier, an innovative inventor based in Berg, Germany, has made significant contributions to the field of solar technology. With an impressive portfolio of 34 patents, his work continues to push the boundaries of what is possible in solar energy conversion.
Latest Patents
Among his latest inventions is the "Induced Junction Chalcopyrite Solar Cell," which introduces a novel solar cell utilizing an I-III-VI₂ semiconductor material featuring an inversion layer. This inventive solar cell design includes a substrate with an electrically conductive first electrode, a p-conductive polycrystalline semiconductor layer made from chalcopyrite material, a barrier layer of electrically non-conductive material, a second electrode, and an anti-reflection layer. The anti-reflection layer, which possesses stationary positive charges, induces a negatively charged inversion layer at the boundary surface of the semiconductor layer. This negatively charged layer functions as an emitter for a space charge zone, further optimized by employing materials such as copper-indium-diselenide, copper-gallium-diselenide, silicon dioxide, silicon nitride, and cesium chloride.
Another significant patent by Grabmaier is an "Arrangement for the Continuous Melting of Granulated Silicon." This invention aims to enhance the melting process of silicon granulate for a band drawing method by utilizing a thermally insulated, annular crucible with a rotary plate, which allows for continuous variation in speed. This configuration ensures a uniform delivery and melting of granulate particles, facilitating the production of silicon bands essential for solar cells.
Career Highlights
Josef Grabmaier has established himself as a key innovator at Siemens Aktiengesellschaft, where he has been instrumental in advancing solar technology. His work has had a meaningful impact on the efficiency and manufacturing processes involved in solar energy production.
Collaborations
Throughout his career, Grabmaier has collaborated with distinguished colleagues, including Richard Falckenberg and Hubert Aulich. These partnerships have contributed to the successful development of several cutting-edge technologies in the realm of solar energy.
Conclusion
Josef Grabmaier's innovative spirit and dedication to advancing solar technology are exemplified through his numerous patents and collaborative efforts. His inventions, particularly in the field of solar cell design and silicon processing, position him as a significant figure in the pursuit of sustainable energy solutions. As the industry evolves, Grabmaier's contributions will undoubtedly play a critical role in shaping the future of solar energy.
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