Credit: Image courtesy of Mercouri Kanatzidis, Northwestern University
The color coordinate map illustrates the colors of light emitted by different hybrid perovskites (with varying degrees of internal structural distortion) relative to pure white (corresponding to the yellow circle). The insert is a photo of the white light emitted by the most distorted material in the study ((abbreviated a-(DMEN)PbBr4), also shown as a blue circle in the color map) after stimulation by ultraviolet radiation.