Stephen Whitelegg

Title: **The Innovations of Inventor Stephen Whitelegg**

Introduction

Stephen Whitelegg is a distinguished inventor based in Stockport, Great Britain. With a solid portfolio of five patents, he has significantly contributed to the field of materials science, particularly in the development of nanotechnology for photovoltaic applications. His latest inventions showcase the potential of nanoparticles in improving solar energy efficiency.

Latest Patents

One of Whitelegg's recent patents is focused on the **Preparation of Copper-Rich Copper Indium (Gallium) Diselenide/Disulfide Nanoparticles**. This innovative method utilizes a copper-rich stoichiometry to create nanoparticles that are capped with organo-chalcogen ligands. This processing allows the nanoparticles to be adaptable in organic solvents. They can be deposited onto a substrate and thermally processed in an atmosphere rich in chalcogens to convert excess copper into copper selenide or copper sulfide. This transformation serves as a sintering flux, promoting liquid-phase sintering and supporting the growth of large grains essential for high-efficiency photovoltaic devices.

Another significant patent addresses a method to prepare **CIGS Absorber Layers** using CIGS nanoparticles. This process includes one or more annealing steps aimed at drying the nanoparticle films and fusing them to form CIGS crystals. The final annealing step particularly encourages particle fusion, which aids in producing larger grains in the CIGS absorber layers. Remarkably, exposing the nanoparticle films to a reactive sulfur-rich environment minimizes carbon content, leading to the successful growth of larger CIGS crystals.

Career Highlights

Throughout his career, Stephen Whitelegg has worked with reputable companies including Nanoco Technologies Limited. His research and development efforts have placed him at the forefront of innovations in nanotechnology applied to solar energy, vastly impacting the efficiency and viability of photovoltaic applications.

Collaborations

Whitelegg has collaborated with notable colleagues such as Ombretta Masala and Christopher Paul Newman. These partnerships have enriched his work, contributing to the development of advanced methodologies in the creation and application of CIGS-based technologies.

Conclusion

Stephen Whitelegg stands out as an inventive force in the field of nanotechnology and solar energy applications. His patents reflect both his innovative thinking and dedication to enhancing photovoltaic technology. As he continues to develop new methodologies, the future holds great promise for his contributions to sustainable energy solutions.