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Inserting point contacts between the perovskite and C60 layers reduces the interfacial recombination. However, the accumulation of mobile ions at the point contacts can decrease the device stability.
Michael Graetzel, Shaik Mohammed Zakeeruddin, Lukas Pfeifer
Christian Michael Wolff, Fan Fu
Michael Graetzel, Shaik Mohammed Zakeeruddin, Hongwei Zhu, Zhongjin Shen