Abstract
The instability of perovskite solar cells under oxygen and light stress can be alleviated by choosing a suitable device interlayer and device configuration.
Highlights
Passivation against oxygen and light induced degradation by the PCBM electron transport layer in planar perovskite solar cells
We find that planar structure devices show slower lateral oxygen diffusion rates than mesoporous scaffold devices, with these slower diffusion rates being a key factor in enhancing stability
We have shown that an inverted structure, organic interlayer planar CH3NH3PbI3 device architecture with a PCBM electron collection layer is more stable under oxygen and light environments than a conventional one employing mesoporous TiO2 and spiro-OMeTAD interlayers
Summary
Passivation against oxygen and light induced degradation by the PCBM electron transport layer in planar perovskite solar cells
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