Chameleon materials: The origin of color variation in low-dimensional perovskites

Some light-emitting diodes (LEDs) created from perovskite, a class of optoelectronic materials, emit light over a broad wavelength range. Scientists have now shown that in some cases, the explanation of why this happens is incorrect. Their new explanation should help scientists to design perovskite LEDs capable of broad-range light emission.

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