White luminescence from Zn1-m-nS:Ce0.0005,Li0.0005,Mnn(0.01 < n < 0.0001 mol) phosphors with and without capping of amorphous SiO2 is being reported. The phosphor was prepared by solid state method at the calcination temperature of 950°C, 1020°C and 1080°C, for 5 h in carbon reducing atmosphere. Amorphous SiO2 capping was done on the heat treated phosphors using sol-gel chemical method subsequently calcined at 650°C in carbon reducing atmosphere for 5 h. The Mn content varied from 0.01 mol to 0.0001 mol at fixed Ce3+0.0005 to optimize Ce3+ (450 nm and 520 nm) and Mn2+ (582 nm) emission originates due to electronic transition from (2T2g) 5d – 4f (2F5/2, 2F7/2) and 3d5 (4G (4T1) – 6S (6A1)), respectively. The addition of Li+ with Ce3+ introduce vacancies and different kinds of Ce3+ centers which make it difficult to interpret the structure less emission band of Ce3+ centers. Host band tuning was observed as a function of Mn2+ content. The phosphor shows white light, as confirmed by the CIE chromaticity coordinates (0.300, 0.295).