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DataCell - A Solar Cell Integrated Modulating Retroreflector

The concept of a hybrid solar cell with an integrated multi-quantum well modulating retroreflector is presented. This device can be fabricated by monolithic growth of III-V compounds or via mechanical stacking. The “DataCell” device allows for simultaneous electrical energy harvesting (photovoltaic effect) AND high-speed optical data communication (quantum-confined Stark effect) for free-space optical (FSO) links in a single integrated device. The fabrication and successful operation of first prototype devices is discussed.