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Photocell System Driven by Mechanoluminescence

A mechanoluminescence driven photocell system consisting of a mechanoluminescent (ML) material and a photocell was prepared. The ML material developed in our laboratory is the world's first material developed for a practical use in the elastic deformation region. In this system, the ML composite (an epoxy pellet including europium-doped strontium aluminate (SAO:E), one of the most efficient ML materials) was used as a light source, and a silicon solar cell was used as the photoelectric converter. With the application of compressive stress to the ML composite pellet in the system, the photocurrent corresponding to the mechanoluminescence was successfully observed.