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Promoting integrated circuits reusability thanks to thermal annealing: an environmental and financial profitability study

Percy, Antoine
(2022)

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Details

Supervisors
Raskin, Jean-Pierre
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingénieur civil électricien, à finalité spécialisée
Abstract
The exponential growth associated with semiconducting knowledges translates inevitably, in a linear economy, into ever-increasing carbon emissions. The so-called silicon 'roadmap' was built with the objective of delivering, at a high rate, new products to fulfill bigger consumer needs. In such framework, no efforts needed to be oriented toward the reusability of building blocks such as integrated circuits (ICs). With the recent evolution of the semiconductor supply chain, Moore's law shortness of breath motivates the elaboration of sustainable semiconductor businesses. In this thesis, we chose to investigate the relevance of a circular model for ICs'life cycle based on remanufacturing ICs thanks to a thermal annealing process. Particularly, we focused on a prominent ICs' family: the flash memories. The recovering of such memory pristine electrical properties is investigated thanks to 'Erase/program' time evolution curves before and after the annealing treatment. From there, we estimated the economic relevance of reconditioning ships thanks to the life cycle assessment of a hypothetical remanufacturing plant. We showed that the reuse of flash memories could reduce the European Greenhouse gas emissions by 0.6 to 1.4 MegaTons CO2 equivalent. To inferring benefits of such approach, the structural and functional costs were estimated as well as market trends. It was shown that the profitability range around -0.9 and 13.9M€ depending highly on the market demand for remanufactured ICs. Nevertheless, we promote here a value chain for reconditioned ICs with ICs reliability and testability at its core.
HERA Award Sustainable IT (Nominé 2023)

Citations

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Percy, A. (2022). Promoting integrated circuits reusability thanks to thermal annealing: an environmental and financial profitability study. https://dial-mem.test.bib.ucl.ac.be/handle/2078.2/37713