The effects of inorganic pigments on the luminescent properties of colored luminous fiber

Abstract

Luminous fibers are produced by adding luminous pigments to regular manmade fibers to enable them to glow in the dark, while colored luminous fibers are produced by adding colored pigments to luminous fibers. In order to obtain a basic understanding of the effects of inorganic pigments on the luminescent properties of colored luminous fibers, five colored luminous fibers were prepared. Photoluminescence spectroscopy was used to investigate the effects of inorganic pigments on the luminescent properties of luminous fibers. The degree of crystallization of colored luminous fibers was reduced because of the addition of inorganic pigments and luminous materials, as revealed by X-ray diffraction data. Afterglow intensity of colored luminous fibers decreased with time, and the addition of inorganic pigments affected the intensity of luminous fibers. Compared with the white luminous fiber, the positions of the emission peaks were unaffected in the case of fibers colored with red, blue, and green pigments, but in the case of the fiber colored with the yellow pigment three excitation peaks were noted. Colored luminous fibers emitted colored light, which produced different visual stimulation to the human eyes. It was observed that the yellow luminous fiber had the largest visual perception brightness followed by white, green, red, and blue luminous fibers. The addition of inorganic pigments had certain effects on the dominant wavelengths of colored luminous fibers, but not on the color of the emitted light.