A cyan-emitting phosphor Ca3SiO4(Cl,Br)2:Eu2+ with high efficiency and good thermal stability for full-visible-spectrum LED lighting

Energy-transfer-induced enhancement of Mn2+-based narrow-band green emission in Sr2(Mg,Mn)Al22O36 phosphor by Eu2+ alloying

Phosphor is an important part of the new generation of light-emitting diodes (LEDs), which requires high luminous intensity and high-temperature resistance. In this study, a series of excellent (Ba1−x−yCax)AlSi5O2N7:yEu2+ phosphors was developed, which were synthesized by a high-temperature solid-state reaction in a reducing atmosphere. In addition, the crystallinity and luminescence intensity of the samples could be enhanced by some amount of Ca2+ substitution. The luminescence intensity was the highest when the Eu2+ concentration reached 0.06. Furthermore, the thermal stability of the luminescence was studied in detail. The results were satisfactory, showing that the luminescence intensity of the (Ba1−xCax)AlSi5O2N7:Eu2+ phosphors exhibited unique negative-thermal-quenching characteristics both at high (273–473 K) and low (4–273 K) temperatures. And the phosphor combined with UV LED chip and red phosphor Sr2Si5N8:Eu2+ can achieve a CRI of 90.4 in white LED application which indicated the (Ba1−xCax)AlSi5O2N7:Eu2+ phosphor has potential in LED applications.

A study of negative-thermal-quenching (Ba/Ca)AlSi5O2N7:Eu2+ phosphors.

Intense emissions in Ce3+/Eu2+ doped Ca5.93-mSrmBa(PO4)4O phosphors via host adjustment and energy transfer.

Enhancement of biexciton generation via resonance energy transfer in nanoclusters of colloidal CdTe quantum dots for optical gain applications

Enhanced photoluminescence quantum yield of red-emitting CdTe:Gd 3+ QDs for WLEDs applications

In this paper, the adsorption properties of Toxic volatile organic compounds gas molecules (C6H6, C2H4O, C2H3Cl and CH3CHO) on MoS2 and Fe - MoS2(Fe-MoS2) were investigated using a first principles approach. we reported that Fe doped monolayer MoS2 nanomaterials were a promising approach to improve their gas sensing performance. The adsorptions of Toxic volatile organic compounds gas molecules (C6H6, C2H4O, C2H3Cl and CH3CHO) gas molecule on Fe-MoS2 were studied in terms of adsorption energy, charge transfers, band structures, and charge density differences. The result suggested that the adsorption of VOCs gas molecule on the Fe-MoS2 monolayer was energetically favorable, which gives rise to the most stable configurations. Besides, the VOCs gas molecule was physisorbed on the monolayer surface due to the weak interaction between them and Fe-MoS2 monolayer. Most notably, the Fe-MoS2 monolayer might be a great candidate for low-cost, highly active, and stable catalysts and gas sensors, providing an avenue to facilitate the design of highly active MoS2-based two-dimensional gas sensor. 

Volatile organic compounds gas molecule adsorption on Fe-MoS2 monolayer: The first-principles study

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Enhanced photoluminescence quantum yield of red-emitting CdTe:Gd 3+ QDs for WLEDs applications

Volatile organic compounds gas molecule adsorption on Fe-MoS2 monolayer: The first-principles study