Company Filing History:
8 out of 30,066 
1 out of 15 Years Active: 1979-1994
Title: Wolfgang Kruehler: Innovator in Solar Cell Technology
Introduction
Wolfgang Kruehler is a prominent inventor based in Unterhaching, Germany. He has made significant contributions to the field of solar energy, particularly in the development of advanced solar cell technologies. With a total of 8 patents to his name, Kruehler's work has paved the way for more efficient solar energy solutions.
Latest Patents
Among his latest innovations is a method for manufacturing polycrystalline silicon thin-film solar cells. This invention provides an improved technique for creating highly efficient and thin solar cells. The process involves producing a silicon nucleation layer on amorphous substrates, which is selectively etched to leave uniformly <111> oriented nuclei. The resulting silicon thin-film exhibits coarse-crystalline properties, with grain boundaries perpendicular to the substrate and a pyramid structure that enhances efficiency. High photocurrents can be achieved with solar cells manufactured from this method, starting with a layer thickness of just 10 micrometers.
Another notable patent is the induced junction chalcopyrite solar cell. This invention features a new solar cell made from I-III-VI2 semiconductor material that includes an inversion layer. The design comprises a substrate with a first electrode, a p-conductive polycrystalline semiconductor layer, a barrier layer of non-conductive material, a second electrode, and an anti-reflection layer. The anti-reflection layer contains stationary positive charges that induce a negatively charged inversion layer, serving as an emitter for the space charge zone.
Career Highlights
Throughout his career, Wolfgang Kruehler has worked with notable companies such as Siemens Aktiengesellschaft and Siemens Solar GmbH. His experience in these organizations has contributed to his expertise in solar technology and innovation.
Collaborations
Kruehler has collaborated with esteemed colleagues, including Josef Grabmaier and Rolf Plaettner. These partnerships have further enriched his work and advancements in solar energy solutions.
Conclusion
Wolfgang Kruehler's contributions to solar cell technology demonstrate his commitment to innovation and sustainability. His patents reflect a deep understanding of materials and processes that enhance solar energy efficiency. His work continues to influence the future of renewable energy.