Tuning perovskite solar-cell absorbers by giving them a squeeze

(American Chemical Society) Solar cells are among the most established and widely-utilized alternative energy technologies due to their relative affordability and ease of integration into existing infrastructure. Inexpensive materials called hybrid perovskites show great promise as solar-cell absorbers, and they are getting more and more efficient. This week in ACS Central Science, researchers reveal they can improve the performance of these materials simply by applying external pressure.