Far-red-emitting double-perovskite CaLaMgSbO₆:Mn⁴⁺phosphors with high photoluminescence efficiency and thermal stability for indoor plant cultivation LEDs

Abstract

Far-red-emitting double-perovskite CaLaMgSbO6:Mn4+ phosphors with high quantum efficiency and thermal stability were developed for potential applications in indoor plant cultivation LEDs.

Highly efficient red-emitting Ca2YSbO6:Eu3+ double perovskite phosphors for warm WLEDs

“…15 Recently, ordered double perovskite type oxides with the general formula A 2 BB 0 O 6 (A ¼ Ca, Sr, Ba, Y, La, Gd; B ¼ Y, La, Gd, Mg, Zn, Li; B 0 ¼ Sb, Ta, Nb, Ti) or AA 0 BB 0 O 6 (A ¼ Ca, Sr, Ba, Na, Li; A 0 ¼ Y, La, Gd; B ¼ Mg, Zn; B 0 ¼ W, Mo, Sb, Ta, Nb) have been intensively investigated owing to their good thermal stability and chemical properties. 10,16 In typical crystal structures of double perovskites, both the B and B 0 sites are coordinated with six oxygen atoms by corner-sharing alternately, while the A (or A 0 ) site is coordinated with eight or twelve oxygen atoms based on the distortion of the crystal structure. Besides, the BO 6 and B 0 O 6 sites can reduce the symmetry of the A (or A 0 ) ones and produce various coordination environments for doping with rare earth ions.…”

Sol-Gel Combustion Synthesis, Crystal Structure and Luminescence of Cr3+ and Mn4+ Ions in Nanocrystalline SrAl4O7

“…Recently, there has been a growing interest in such inexpensive phosphors (without RE ions) for the deep-red and near-IR emission range. Red light with a wavelength in the range of 650-800 nm can control the growth process of plants by regulating the ratio of phytochrome [16]. Thus the aluminates of alkaline earth elements MAl 4 O 7 with the grossite structure, doped with suitable activators emitting in the red region of the spectrum, can find a potential application for the manufacturing of LEDs for greenhouses illumination.…”

Reliability Assessment of Light-Emitting Diode Packages With Both Luminous Flux Response Surface Model and Spectral Power Distribution Method

“…With the development of LED technology, high power LED packages are increasingly applied to many lighting and beyond-lighting industries, i.e. automotive lighting [8], indoor plant cultivation [9], healthcare [10], data communication [11], [12] and so on.…”