De Novo LED Double Perovskite by Abhoy Appears as a JACS Cover Article Posted June 17, 2020 michaelis Tailorable Indirect to Direct Band-Gap Double Perovskites with Bright White-Light Emission: Decoding Chemical Structure Using Solid-State NMR Link: https://pubs.acs.org/doi/10.1021/jacs.0c02198