Zest for

Squeeze the Sun

The LEEMONS (Low-Energy Electron Multiplication On Nanostructured Solar cells) project aims to enhance solar cell efficiency through an innovative electron multiplication process, which generates multiple low-energy electrons from high-energy photons. Fully compatible with 90% of current photovoltaic manufacturing lines, this solution offers a low-investment pathway toward more sustainable solar energy.

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01.11.24
01.11.27

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Our technology

Our Low-Energy Electron Multiplication (LEEM) technology leverages nanostructuring techniques derived from the microelectronics industry. Using Segton® units (engineered divacancy structures), it enables secondary electron generation, enhancing efficiency beyond the Shockley–Queisser limit. The process requires only two additional steps (ion implantation and annealing) which can be seamlessly integrated into existing solar cell manufacturing lines.

Impact

  • Prototype a game-changing photovoltaic innovation through nanotechnology
  • Boost solar energy yield with cost-effective and easily recyclable solutions
  • Accelerate the transition toward net-zero greenhouse gas emissions
  • Support the revival of the European photovoltaic industry
Group photo of LEEMONS consortium partners during General Assembly in Besançon, May 2025
LEEMONS General Assembly Highlights – Besançon, May 21, 2025
Capture d’écran 2025-03-31 à 10.01.50
Welcome CSEM: Boosting LEEMONS with Heterojunction Expertise
Two colleagues in factory working on solar cell
Breakthrough at UMLP: First Hard Masks Delivered!