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Paper-based electronics have been considered as one of the most exciting technologies in the near future due to sustainability, low cost, mechanical flexibility, etc. Even though there have been numerous studies regarding this technology, there is not any available quantitative study on how paper electronics would minimize the impact on the environment. This work aims to give the first detailed analysis regarding this important question. To this end, we for the first time designed and prototyped paper-based multilayer printed circuit boards (P-PCBs), which show comparable functions to the currently available organic printed circuit boards (O-PCBs); yet the P-PCBs adopt a “green” preparation process. A life cycle assessment study was performed to quantify the P-PCBs' environmental impacts, e.g. acidification potential, global warming potential, human toxic potential, ozone layer depletion potential, etc. Our current …