
Leemons
the LEEMONS (Low-Energy Electron Multiplication On Nanostructured Solar cells) project is to develop a demonstrator of an innovative technology that uses the electron multiplication mechanism to reduce thermal losses and significantly increase conversion efficiency.
The project aims to increase solar cell efficiency through an innovative electron multiplication process that allows more than one electron to be transferred into the conduction band using the energy of a single, high-energy photon. Low-energy electron multiplication (LEEM) technology utilizes nanostructuring techniques derived from the microelectronics industry. Using Segton® layers (properly fabricated amorphous silicon structures beneath the surface of a single Si crystal), secondary electrons can be generated, increasing efficiency beyond the Shockley-Queisser limit. This process requires two additional steps (ion implantation and annealing). This technology is intended to be compatible and easily integrated into 80–95% of current photovoltaic module production lines.

Roltec's tasks within the Leemons Project:
Roltec has extensive experience in low-temperature metallization of thin-film solar cells. We will test additional alternative being conducted on selected cells supplied by ISC Konstanz to ensure that the new metallization process produces consistent and repeatable results (i.e., a maximum 2% decrease in cell efficiency due to the deposition process). In addition to metallization, Roltec is participating in the analysis of measurement the impact of LEEMONS technology on the solar cell life cycle .
More information on the project home page .
The Leemons Project in numbers:
Project partners:
Funded by the European Union. Programme: HORIZON EUROPE ; project ID: 101172870. The
views and opinions expressed are solely those of the author(s) and do not necessarily reflect the views of the European Union. Neither the European Union nor the awarding authority can be held responsible for them.