Under typical indoor illumination of around 500 lux, from light sources such as LED or fluorescent light, the device’s power conversion efficiency is just below 15%. The largest device has an open-circuit voltage of 3.8 V, a short-circuit current of 146 μA, and an output power of 418 μW. The product can also be used in conjunction with capacitors to replace batteries or to prolong their lifetime in low-power applications.
A new paper published by scientists from the Massachusetts Institute of Technology examines the potential for integrating small solar cells into the wireless sensors needed to power the fast-growing internet of things (IoT) ecosystem, many of which are located indoors. This market could represent a unique opportunity for thin film PV technologies, and perovskites in particular, to reduce the risk inherent to ramping up commercial scale production.
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