Design of highly efficient deep-red emission in the Mn⁴⁺ doped new-type structure CaMgAl₁₀O₁₇ for plant growth LED light

Abstract

The auxiliary light equipment for plant growth requires phosphor-converted light-emitting-diodes (pc-LEDs) with high luminous efficiency and stable structure, and the properties of phosphors highly determine the performance of the...

Enhancing the luminescence performance of Ca2−xSrxBO3Cl:Eu2+,Dy3+ by substitution of Sr2+ for Ca2+

“…In this context, as a reusable energy storage material, long persistent luminescence materials have attracted much attention. [1][2][3] Persistent luminescence (PersL) materials have unique properties for storing energy, with afterglow properties of different materials ranging from a few seconds to several days. 4,5 Applied in coatings, inks and glass ceramics at first, PersL materials are now being used in fields including emergency escape, defence and military, information encryption and light storage as research develops.…”

Synergistic luminescent thermometer using co-doped Ca2GdSbO6:Mn4+/(Eu3+ or Sm3+) phosphors

“…Sensitivity is an essential factor for evaluating the performance of temperature sensing. The absolute sensitivity S a and relative sensitivity S r can be expressed as: 36,42…”

“…[31][32][33][34][35] Meanwhile, Eu 3+ and Sm 3+ ions have a 4f n electronic configuration with thermal quenching by multi-phonon relaxation (MPR), while that of Mn 4+ ions occurs by energy-level crossover relaxation (ELCR). 36 Thus, Mn 4+ luminescence is quenched by increasing the temperature more rapidly than those of Eu 3+ and Sm 3+ ions. It is highly desirable to coordinate photoluminescence with the temperature dependence of Mn 4+ and Eu 3+ (or Sm 3+ ) ions to achieve highly sensitive LIR temperature readouts.…”

Design of highly efficient energy transfer phosphor Sr4Al14O25:Eu2+,Mn4+ with deep-red emission and application potential in plant growth

“…5 To provide the plants with light, high-pressure sodium lamps, metal halide lamps, and fluorescent lamps, among others, have been successively used as indoor light sources for plant factories. 6 Traditional indoor light sources, on the other hand, have drawbacks such as energy waste, short lifespan, and a low proportion of red and blue light. Red phosphorconverted light-emitting diodes (pc-LEDs) have emerged as a research hotspot among many schemes due to their high brightness, high efficiency and long lifespan.…”