Photoluminescence properties of Ba2LaSbO6:Mn4+ deep-red-emitting phosphor for plant growth LEDs

Synthesis, Crystal Structure, and Photoluminescence Characteristics of High-Efficiency Deep-Red Emitting Ba2GdTaO6:Mn4+ Phosphors

“…Recently, non-rare-earth transitional-metal Mn 4+ ions, which could serve as efficient luminescent activators with a strong absorption in the range of 250–600 nm and an intense red emission covering the region from 600 to 800 nm, were widely investigated for developing new red phosphors. 3,5,19−30 Generally, Mn 4+ ions can be stable in the host matrix with an octahedral environment. 31−33 Double perovskite structure is regarded as an outstanding host material for Mn 4+ activators on account of its different crystal structures, excellent optical properties, and good chemical stability.…”

“…Therefore, plant illumination technology is an indispensable part of modern agricultural development; especially for areas lacking land resources and light conditions, plant illumination is particularly important . As reported previously, the blue light around 450 nm (410–500 nm) and red light around 660 nm (610–700 nm) are important for photosynthesis, phototropism, and photomorphogenesis. − At present, the light-emitting diodes (LEDs) possess many advantages, such as energy savings, low cost, high efficiency, environmental friendliness, and long lifetimes, and could be considered as the main type of light source for both general lighting and plant growth lighting. − According to the current situation, searching for phosphors with bright red emission for plant growth lighting is imperative.…”

Novel Intense Emission-Tunable Li1.5La1.5WO6:Mn4+,Nd3+,Yb3+ Material with Good Luminescence Thermal Stability for Potential Applications in c-Si Solar Cells and Plant-Cultivation Far-Red-NIR LEDs

“…6,7 Therefore, looking for efficient spectral conversion materials for solar cells is always a research hot spot. As for the LEDs, it is the most prospective candidate light source to completely replace the current fluorescent and incandescent lamps in near future on account of possessing lots of merits such as compactness, long lifetime, energy saving, and environmental friendliness, 8,9 which have already been used in agriculture field. Currently, the most common technology to obtain LEDs employs the LED chips and phosphors, 10,11 which allows to tune the emission color according to the requirement of plant photoreceptor.…”

“…Consequently, upconversion, down-shifting and/or down-conversion spectral conversion strategies are commonly adopted, whose aims are converting the low spectral response region (300–500 nm) to high spectral response region (900–1100 nm) for c-Si semiconductor materials to improve the solar spectral utilization efficiency. , Therefore, looking for efficient spectral conversion materials for solar cells is always a research hot spot. As for the LEDs, it is the most prospective candidate light source to completely replace the current fluorescent and incandescent lamps in near future on account of possessing lots of merits such as compactness, long lifetime, energy saving, and environmental friendliness, , which have already been used in agriculture field. Currently, the most common technology to obtain LEDs employs the LED chips and phosphors, , which allows to tune the emission color according to the requirement of plant photoreceptor.…”

Enhanced photoluminescence and energy transfer performance of Y3Al4GaO12:Mn4+,Dy3+ phosphors for plant growth LED lights

“…4,12,13 They usually are synthesized in critical requirements (0.9 MPa N 2 pressure and 1800 C), the high cost limits their utility in agricultural industry. As an alternative, Mn 4+doped oxides [14][15][16][17] catch the public's attention due to its attractive luminescence properties of high-efficacy, low cost, high stability and eco-friendliness. Many strategies have been tried out to enhance the photoluminescence emission of Mn 4+ -doped phosphors, such as matrix solid solution modication, [18][19][20] codoped charge compensator 21,22 or uxing agent, 23,24 and energy transfer from sensitizer to activator.…”