Its atomic radius is 0.248 nm and the (+1) ionic radius is 0.148 nm. In the solid state Rubidium has a body-centered cubic crystal structure with a = 0.562 nm and a nearest neighbor distance of 0.478 ...

One solution is to add rubidium (Rb) to stabilize WBG materials ... The researchers used lattice strain—a controlled distortion in the atomic structure—to keep Rb locked into the perovskite ...

By utilizing the controlled distortion in the atomic structure, the pioneering approach ... National Renewable Energy Laboratory While adding rubidium to help stabilize the semiconductors has ...