The invention provides a lighting device (100) comprising a) a light source (10) configured to provide blue light source light (11), b) a first luminescent material (210) configured to convert at least part of the light source light (11) into first luminescent material light (211) with light intensity in one or more of the green spectral region and yellow spectral region, c) a second luminescent material (220) configured to convert (i) at least part of the light source light (11), or (ii) at least part of the light light (11) and at least part of the first luminescent material light (221) with light intensity in the red spectral region, and d) a light exit face (110), wherein the lighting device (100) is configured to provide lighting device light (101) downstream from said light exit face (110), wherein the lighting device light (101) comprises one or more of said light source light (11), said first luminescent material light (211), and said second luminescent material light (221), and wherein the second luminescent material (220) is configured to be at least partly saturated with (i) light source light (11), or (ii) light source light (11) and first luminescent material light (211), at or above at least 50% of nominal operation power of the lighting device (100).

A broadband emission material according to the present invention includes: a fluoride glass containing 20 to 45 mol % of AlF.sub.3, 25 to 63 mol % of alkaline-earth fluorides in total and 3 to 25 mol % of at least one fluoride of element selected from the group consisting of Y, La, Gd and Lu; and ytterbium ions incorporated in the fluoride glass as divalent rare-earth ions so as to serve as a luminescent center, wherein the fluoride glass includes 1 to 15 mol % of at least one halide of element selected from the group consisting of Al, Ba, Sr, Ca and Mg and element selected from the group consisting of Cl, Br and I; and wherein the alkaline-earth fluorides includes 0 to 15 mol % of MgF.sub.2, 7 to 25 mol % of CaF.sub.2, 0 to 22 mol % of SrF.sub.2 and 0 to 5 mol % of BaF.sub.2.