Diffusion engineering of ions and charge carriers for stable efficient perovskite solar cells
Nature Communications, Published online: 12 June 2017; doi:10.1038/ncomms15330
Ion migration in perovskite solar cells are known to cause hysteresis and instability. Bi et al., report a charge extraction layer based on graphene, fullerenes and carbon quantum dots which suppresses ion diffusion and enhances charge carrier diffusion leading to efficient devices with improved stability.
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