X-ray fluorescence (XRF) measurements were performed with a Shimadzu EDX-7000 to detect Bi, Mo, and Eu. A Bruker D8 Venture DUO was used for collecting single crystal X-ray diffraction (XRD) data. Single crystal structures were solved and refined with SHELX tools in the OLEX2 program. Powder XRD patterns were collected with a Mo-Kα source Bruker D8 Advance with a capillary geometry. Synchrotron powder XRD data were collected using the mail-in program for the Advanced Photon Source 11-BM beamline. Photoluminescence maps were captured with a Nanophoton Raman 11 microscope using an excitation wavelength of 532 nm, a slit width of 50 µm, and a spectral resolution of 0.17 nm.