Detailed Explanation:

Europium-doped strontium aluminate (SrAl₂O₄:Eu²⁺,Dy³⁺) is the most efficient modern phosphorescent material used in night glowing pigments.

It absorbs light energy and slowly releases it in darkness, providing a bright afterglow lasting up to 12 hours. Other compounds listed (copper sulphide-doped zinc oxide, barium sulphate-doped copper carbonate, boron oxide-doped copper sulphate) do not exhibit significant or efficient phosphorescence for glow-in-the-dark applications.