Application of innovations grouped under the name giant photoconversion

Zbigniew T. Kuznicki; Patrick Meyrueis; Mikaël Hosatte; Marek Basta

doi:10.1117/12.2620963

24 May 2022 Application of innovations grouped under the name giant photoconversion

Zbigniew T. Kuznicki, Patrick Meyrueis, Mikaël Hosatte, Marek Basta

Proceedings Volume 12150, Photonics for Solar Energy Systems IX; 121500A (2022) https://doi.org/10.1117/12.2620963
Event: SPIE Photonics Europe, 2022, Strasbourg, France

Conference Poster

Abstract

In a series of previous articles [1], we have described phenomena that can be grouped under an integrating term as Giant Photoconversion. This designation covers discoveries and innovations in the field of silicon photovoltaics obtained mainly at the nanoscale. In this paper, we describe how to modulate the crystal lattice of the silicon wafer by burying in its interior a nanolayer with a specific crystallinity. Theoretical background has been recently proved by using mass production machines usually in service in the micro electronic industry. The new phenomena appear in a buried nanolayer of a silicon metamaterial having a specific crystalline phase and called SEG-Matter (Secondary Electron Generation – Matter). We have conceived a design and related manufacturing of new devices for high efficiency solar cells using our experimental results. The technology can be seen as a relatively simple development of the conventional c-Si cell manufacturing process completed by an amorphizing ion implantation and related thermal treatment. Both can be integrated in a production line. An original protocol has been developed first by a laboratory production on small dimension cells (a square 2 cm) in the Photonics Systems Laboratory of the Strasbourg University, then pursuit on 4-inch c-Si wafers in the LAAS CNRS in Toulouse and finally on standard c-Si wafers of the SEGTON AdT Company. The proof of concept of such solution have been recently done on commercial-sized wafers of crystalline silicon having a square 6-inch format. We obtained an increase in PV efficiency of about 2%.

Citation Download Citation

Zbigniew T. Kuznicki, Patrick Meyrueis, Mikaël Hosatte, and Marek Basta "Application of innovations grouped under the name giant photoconversion", Proc. SPIE 12150, Photonics for Solar Energy Systems IX, 121500A (24 May 2022); https://doi.org/10.1117/12.2620963

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