The BASON: Sm2+phosphor can be excited by blue light(λex=467nm)to emit far-red light(λem=762nm, FWHM=120nm)that matches the far-red light-absorbing phytochrome.Compared to Cr3+to form an effective luminescent six-coordinated cation site,the nine-coordinated cation siterequired for Sm2+ion...