Citation: Sch\"afer, Thomas C.; Sorg, Jens; Sedykh, Alexander E.; M\"uller-Buschbaum, Klaus (2021). Red emitting Sm(II) phosphors: Thermally switchable Luminescence in Sm(AlX4)2 (X = Cl, Br) by 5d-4f and intra-4f transitions. Chemical Communications, , pp. -.