“The researchers performed this conversion through a process known as amidination, in which the ammonium group is replaced with a more stable amidinium group. This innovation prevented the perovskite cells from breaking down over time — especially when exposed to extreme heat,” said a press release.
Researchers maintained that the resulting solar cell achieved an impressive 26.3% efficiency, which means it successfully converted 26.3% of absorbed sunlight into electricity.
The coated solar cell also retained 90% of its initial efficiency after 1,100 hours of testing under harsh conditions, demonstrating a T90 lifetime three times longer than before when exposed to heat and light, according to study.