Keith R McIntosh

Title: **Innovator Spotlight: Keith R. McIntosh**

Introduction

Keith R. McIntosh, an accomplished inventor based in Newport, Australia, has made significant contributions to the field of renewable energy, particularly in solar technology. With a total of six patents to his name, McIntosh has innovated processes that not only enhance the efficiency of solar cells but also reduce manufacturing costs.

Latest Patents

Among his latest inventions is a groundbreaking method of manufacturing solar cells. This method utilizes processing techniques that are more economical than traditional microelectronic circuit processing. Preferred embodiments of his patent disclose the use of printing techniques to form masks for etching silicon oxide and diffusing dopants. Additionally, his innovation includes the formation of metal contacts to diffused regions of the solar cell.

In this method, p-doped and n-doped regions are alternately created on the surface of the silicon wafer using masking and etching techniques. Metal contacts to these regions are formed by creating a seed layer stack that includes aluminum, which acts as an infrared reflector, titanium tungsten as a diffusion barrier, and a plating base. The process further involves plating a thick layer of copper over the seed layer, followed by the removal of the seed layer between the plated lines. The texturing of the wafer surface, achieved through either etching or mechanical abrasion, includes an IR reflection layer that significantly lowers surface recombination velocity.

Career Highlights

Keith R. McIntosh is currently affiliated with SunPower Corporation, a leader in solar energy solutions. His innovative work has positioned him as a pivotal figure in advancing solar technology, contributing to both efficiency and cost-effectiveness in solar cell production.

Collaborations

Throughout his career, McIntosh has collaborated with other notable professionals in the field, including Michael Cudzinovic and William P. Mulligan. These collaborations have further enriched the development of innovative technologies that support sustainable energy solutions.

Conclusion

Keith R. McIntosh stands out as a visionary inventor whose work is shaping the future of solar technology. With his commitment to enhancing manufacturing processes and reducing costs, he continues to inspire advancements in renewable energy, making significant contributions to the industry's evolution while promoting sustainable practices.