BRISBANE, Australia, Sept. 15 -- The University of Queensland posted the following news:

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Lead-free solar powers a battery-free future for health tech

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Wearable health devices that never need charging are a step closer thanks to next-generation photovoltaic technology that harvests energy from indoor light, as well as the sun.

While perovskite indoor photovoltaics have emerged as one of the most promising power sources for w . . .

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