Journal
NANO ENERGY
Volume 43, Issue -, Pages 383-392Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2017.11.024
Keywords
Perovskite solar cell; Polystyrene; Stabilize; Phase separation; Moisture
Categories
Funding
- National Natural Science Foundation of China [51627803, 51402348, 11474333, 91433205, 51421002, 51372270]
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Polystyrene (PS) is introduced to stabilize the perovskite component, grains and microstructures by forming PS-capped perovskite grains. It is found that the PS coverage has significant advantages in suppressing the component loss and phase separation, obstructing moisture corrosion and promoting crystal self-healing of perovskite films. Besides, with the PS involvement, exceeding 20% efficiency of a planar TiO2 based cell has been achieved by decreasing charge traps and nonradiative recombination.
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