摘要
The fast developing perovskite solar cells shows high efficiency and low cost.However,the stability problem restricts perovskite from commercial use.In this work,we have studied the effect of grain orientation on the morphological stability of perovskite thin films.By tuning the inorganic/organic ratio in the precursor solution,perovskite thin films with both high crystallinity and good morphological stability have been fabricated.The thermal stability of perovskite solar cells based on the optimized films has been tested.The device performance shows no degradation after annealing at 100℃ for 5h in air.This finding provides general guidelines for the development of thermally stable perovskite solar cells.
The fast developing perovskite solar cells shows high efficiency and low cost.However,the stability problem restricts perovskite from commercial use.In this work,we have studied the effect of grain orientation on the morphological stability of perovskite thin films.By tuning the inorganic/organic ratio in the precursor solution,perovskite thin films with both high crystallinity and good morphological stability have been fabricated.The thermal stability of perovskite solar cells based on the optimized films has been tested.The device performance shows no degradation after annealing at 100℃ for 5h in air.This finding provides general guidelines for the development of thermally stable perovskite solar cells.
基金
Proiect supported by the Youth Innovation Promotion Association of CAS(No.2015167)
