Synthesis and luminescent properties: Mn4+-doped Sr3NaNbO6 phosphor with far-red emission

Synthesis and study of luminescence properties of a deep red–emitting phosphor K2LiAlF6:Mn4+ for plant cultivation

“…The host lattice is spinel, and each Al ion is surrounded by six oxygen atoms in the octahedron. Because the emission is greatly impacted by the covalence of ‘Mn 4+ ligand’ bonding, altering the host can result in Mn 4+ ion emission in the red waveband region of 630–690 nm Mn 4+ :Sr 9 Gd 2 W 4 O 24 [26], Mn 4+ :Sr 3 NaNbO 6 [5], Mn 4+ :Li 2 ZnTi 3 O 8 [7], Mn 4+ :Ba 2 TiGe 2 O 8 [27] and Mn 4+ :KRb 3 Ge 2 F 12 [28]. These are some materials for which researchers have also reported the luminescence properties of Mn 4+ ‐doped materials and their potential applications in plant cultivation.…”

“…Therefore, phosphor-converted light-emitting diodes (PC-LED) have been increasingly used in indoor plant cultivation (IPC) [4]. They increase crop output and improve production quality by minimising the effects of adverse environmental conditions [5]. LEDs enable the control of spectral composition as well as the customisation of light photoluminescence intensity in accordance with plant photoreceptors for providing better growth and impacting plant shape as well as various physiological activities such as blooming and photosynthetic efficiency [6].…”

“…The host lattice is spinel, and each Al ion is surrounded by six oxygen atoms in the octahedron. Because the emission is greatly impacted by the covalence of 'Mn 4+ ligand' bonding, altering the host can result in Mn 4+ ion emission in the red waveband region of 630-690 nm Mn 4+ : Sr 9 Gd 2 W 4 O 24 [26], Mn 4+ :Sr 3 NaNbO 6 [5], Mn 4+ :Li 2 ZnTi 3 O 8 [7],…”