: The study uses anthracene molecules to enhance the photovoltaic properties of perovskite solar cells.

Depending on which specific research area you are interested in, there are several "solid" articles associated with this number:

: "Tuning the hydrogen desorption... through Zn alloying" explores improving metal borohydrides for on-board hydrogen storage.

: "Electric field controlled magnetism and hole doping in monolayer..." discusses using electric fields to manipulate magnetic order in 2D materials [0.26, 0.32].