NEAR INFRARED LIGHT-STORING FLUORESCENT MATERIAL, NEAR INFRARED LIGHT-STORING FLUORESCENT, AND MANUFACTURING METHOD OF NEAR INFRARED LIGHT-STORING FLUORESCENT MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a light-storing fluorescent material exhibiting afterglow in a near infrared region.;SOLUTION: The near infrared light-storing fluorescent material contains crystal structure of Sr₂SnO₄ solid which Nd³⁺ is solid dissolved. The crystal structure has lattice defects, the crystal structure is fired at a temperature of 1200°C or more, the Nd³⁺ is solid dissolved at a concentration equivalent to 0.01 to 10 mol% of Sr contained in Sr₂SnO₄ as a mother material, or the Nd³⁺ substitutes at least a part of the Sr.;COPYRIGHT: (C)2015,JPO&INPIT