Objectives
Empowering Europe's Energy Future with a disruptive, clean and scalable technology
Make a proof-of-concept demonstration of the LEEM effect: the Low Energy Electron Multiplication phenomenon.
LEEMONS project has the ultimate objective to produce a high-performance solar cell prototype. To do so, the LEEMONS technology will be progressively integrated to several industrial “host” solar cells coming from industrial partners. The new performance of these integrated cells will be eventually measured through standardized testing and compared to manufacturer reference cells and reference cells having undergone the same logistical treatment.
To achieve the project's primary goal, the following specific objectives will be pursued:
Micrometric discontinuous ion implantation
LEEMONS technology utilizes ion implantation to form a buried amorphized nanolayer in silicon wafers. For effective electron flow, the layer must be discontinuous, achieved through either direct masking (resist deposition) or indirect masking (hard mask with holes).
Improvement of the metallization's processes of n-type solar cells
The current thermal balance level on high temperature metallisation (> 700°C) of n-type
solar cell fabricated at ISC-Konstanz will be damageable to the LEEMONS technology and needs to be reduced.
Improvement of the electrical passivation
The LEEMONS amorphized nanolayer enables electron multiplication but can also harm solar cell performance by increasing defect density, raising recombination rates, and reducing carrier lifetime. Since carrier lifetime is crucial, minimizing and neutralizing these defects is essential for maintaining overall solar cell efficiency.