Due to the rise in concern for the environment, much attention has been focused on illuminant material as a source of clean energy. Illuminant material is economically eflicient, has no running costs, and emits no pollutants such as carbon dioxide and nitrogen oxide. Used daily, it can replace natural sunlight and fluorescent lighting. It can be used in the nighttime for buildings or on the side of ships to identify dangerous items in the water. Illuminants can also be used as emergency lighting in situations such as earthquakes, typhoons and other disaster areas. However, the cost of the raw material necessary to make the molded piece is rather expensive. So, when creating the blend of ingredients,there is a need to minimize the cost, while maximizing the duration of stable light emissions. The purpose of this research is to find the ideal balance between cost and efficiency. Using the L18 table, we identified molding conditions superior to those in current usage. Furthermore, estimation time for the initial light brightness and luminous decay was shortened.
