Non-rare-earth dual green and red-emitting Mn-doped ZnAl2O4 phosphors for potential application in plan-growth LEDs

Synthesis of manganese molybdate/MWCNT nanostructure composite with a simple approach for supercapacitor applications

“…Co-precipitation is one of the simple and cost-effective approaches mainly employed caused by producing a uniform and high purity ceramic oxides along with ease of adjusting experimental parameters. 20,21 On the other hand, the mechanical mixing method has some benets like simplicity, exibility, and unit operation. 22 As a result, introducing a MnMoO 4 / MWCNT electrode material with a simple technique could prociently enhance the energy storage properties of the MnMoO 4 with a simple synthesizing process enhancing its most common drawbacks.…”

Efficient ultraviolet to far‐red spectral conversion: Tb3+, Cr3+ co‐doped Zn0.5Mg0.5Al2O4 phosphors and their application

“…The photoconverting materials with excellent optical properties have been used in a wide range of applications over the past few decades, such as solid-state lighting, bioimaging, nondestructive agricultural product quality testing, solar energy applications, and agricultural technology. [1][2][3][4][5][6][7][8] It is well known that the sunlight is not only a vital energy source for the human survival but also one of the indispensable parameters for the plant growth. However, not all light is beneficial for the plant growth.…”

Photoluminescent Properties of Red-emitting AlPO4:Cr3+ Phosphor for Plant Growth LEDs

“…With the rapid growth of world economy and population, the energy and environment are the two emerging issues attracting an increase in attention [1]. Besides the accelerated growth of light-emitting diodes (LEDs) lighting, it is highly demanded to innovate commercial artificial greenhouse planting technology in order to obtain high-standard vegetables and green grains [2][3][4][5]. Comparing to the conventional light sources (e.g., fluorescent lamp, incandescent lamp, and metal halide lamp etc.…”

“…Importantly, it is possible to adjust the spectral composition of LED based on the absorption spectrum needed for plants growth by designating suitable phosphors which are often blue and red phosphors [8]. Therefore, the high demand for deep-red-emitting phosphors has been recently received a great attention [2]. Theoretically, red light could be generated by converting a part of violet emission from a violet LED chip using suitable phosphors powder [6].…”

“…Up to now, rare-earth ions such as Eu 3+ , Sm 3+ , Ce 3+ have been mostly used for commercial red-emitting phosphors because of their high luminescent efficiency [6,[8][9][10][11][12][13][14][15][16]. However, they still have several major drawbacks includinghigh price , high undesirability near-UV absorption, environmentally unfriendliness and insignificant far-red light, which limit their applications in horticulture lighting [2,3]. In contrast, the transition-metal-based phosphors exhibit many superior properties like non-toxicity, low cost and ablity to emit far-red emission.…”