Company Filing History:
7 out of 22 
3 out of 6 
2 out of 205 
Years Active: 2008-2024
Title: The Innovative Journey of David McCallum
Introduction
David McCallum, based in West Chicago, Illinois, is a notable inventor recognized for his contributions to the field of solar technology. With a total of 12 patents to his name, McCallum’s inventions demonstrate his dedication to innovation and sustainability in energy solutions.
Latest Patents
One of David McCallum’s significant patents focuses on methods for fabricating thin film III-V compound solar cells. This invention employs epitaxial lift-off techniques, utilizing a sacrificial layer during the epitaxial growth between the substrate and the solar cell. To enhance the durability of the thin film III-V compound solar cell when detached from the substrate, a backing layer is applied before separation. The removal of the sacrificial layer is a crucial step in this process, allowing for the substrate to be reused in the creation of additional solar cells. This method is not only innovative but also environmentally friendly, contributing to the sustainability of solar cell production.
Career Highlights
Throughout his career, David McCallum has made substantial advancements in the field of photovoltaic technology. He has worked with companies like Microlink Devices, Inc. and Vega Wave Systems, Inc., where he honed his skills and contributed to the development of cutting-edge technologies in the energy sector.
Collaborations
David McCallum has collaborated with talented individuals such as Noren Pan and Christopher Youtsey, with whom he has shared insights and innovations, further enriching his portfolio of work and contributing to the advancement of solar technologies.
Conclusion
David McCallum’s innovative spirit and dedication to his craft are evident in his numerous patents and collaborative efforts within the industry. His contributions to the methods of fabricating thin film III-V compound solar cells not only reflect his technical expertise but also signify a commitment to creating sustainable energy solutions for the future. As he continues his work, the impact of his innovations is sure to resonate within the renewable energy landscape.