Examination of Luminescence and Structural Properties of Commercially Available Luminescent Powder Materials

Nowadays, dye pigment materials with glowing features are used, especially in some ornaments and various furniture and home decorations. In addition, such materials are used in various warning signs to warn people by glowing at night. These materials can be synthesized as inorganic or organic. Although such materials are commercially available and can be purchased, the amount of molecules or elements they contain and their glowing properties are not provided by the manufacturer. In this study, the structural and optical properties of commercially available powder-type dye pigments with different colors were investigated. In spectral analyses performed by providing five different colors, it was observed that all materials were amorphous. It was also observed that they had an average particle size of 5–10 um in diameter and could be found together in agglomerated form. It was concluded that materials highly affected by humidity were agglomerated owing to humidity in the environment. It was also stated that they showed PL results with a high contrast ratio, which was quite specific for each color. Almost all the materials contained elemental elements S, N, and O, while in some materials, Cl was observed as an elemental element.