Synthesis and luminescence characteristics of a new Mn4+-Activated Ba6Y2Ti4O17 fluorescent material for plant growth LED

Abstract

Mn⁴⁺ has garnered significant global interest due to its application in red light emission, particularly within the realm of plant growth lighting. However, there are relatively few studies focusing on the incorporation of Mn⁴⁺ into titanate materials. In this research, we synthesized a series of Ba₆Y₂Ti_4-xO₁₇ (BYT:xMn⁴⁺) phosphors with varying concentrations of Mn⁴⁺ using a high-temperature solid-state synthesis method. Initially, we confirmed the structural integrity and phase purity of the samples through X-ray diffraction (XRD) analysis and refinement techniques. The experimental results indicate that under near-ultraviolet (UV) excitation, these phosphors emit far-red light at approximately 700 nm. Furthermore, their emission spectra align closely with the spectral requirements of chlorophyll and photoreceptive pigments (P_r and P_fr), which are essential for optimal plant growth. This characteristic makes them promising candidates for plant cultivation applications. Consequently, we posit that BYT:0.015Mn⁴⁺ represents a novel titanate-based far-red emitting material with considerable potential for use in LED lighting systems designed for plant growth particularly in enhancing photosynthetic efficiency and promoting overall plant development.