Stable metal-halide perovskites for luminescent solar concentrators of real-device integration

Luminescent solar concentrators (LSC), capable of converting broad-band radiation into narrow-spectral photons, are highly attractive in urban area for solar energy harvest in large area. Despite of many advances in LSC research, real-device integration to LSC power source has not been realized to date. In this work, a stable zero-dimensional perovskite nanocrystal was used as embedding phosphor to provide an extremely large Stokes shift up to 1.28 eV. The ensuing LSC featured both an edge coupling efficiency of 81% and a power conversion efficiency (PCE) of 1.1%. To demonstrate its integration ability to electric devices, four pieces of LSC were tandemly stacked with two commercial silicon panels, whereby the output power was charged on a motor-driven fan. Such compact device was able to drive the fan through a xenon lamp radiation despite of its relatively low PCE (0.2%). Our work represents a major step for real-device coupling to LSC, providing many possibilities to electricity extraction from solar energy.