The potential application of Sr₈(Si₄O₁₂)Cl₈:Eu²⁺ phosphor in wide gamut 3D-PDP and 3D-FED is demonstrated in consideration of its high emission intensity (∼148% and ∼280% of commercial BAM) under VUV light and low-voltage electron beam excitation, suitable chromaticity coordinates (0.136, 0.298) and short decay time (∼0.9 μs).