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A floor that can feel when you fall, a warmth that wanders from room to room with you; could the house of the future take care of you?

Powering IoT devices in a cheap, sustainable fashion is crucial to achieve the promised vision of a connected world. Small, low-cost thin film solar cells, optimized to work with diffuse indoor light, offer a solution to this dilemma.

In the shadows of a silicon-dominated field, other photovoltaic (PV) technologies have been edging closer to the spotlight.