For white light‐rendering research activities, interpretation by using colored emitting materials is an alternative approach. But there are issues in designing the white color emitting materials. Particularly, differences in thermal and decay properties of discrete red, green, and blue emitting materials led to the quest for the search of a single‐phased material, able to emit primary colors for white light generation. The current study is an effort to design a simple, single‐phase, and cost‐effective material with the tunable emission of primary colors by a series of Mg1−xBaxAl2O4:Mn2+ nanopowders. Doping of manganese ion (Mn2+) in the presence of the larger barium cation (Ba2+) at tetrahedral‐sites of the spinel magnesium aluminate (MgAl2O4) structure led to the creation of antisite defects. Doped samples were found to have lower bandgaps compared with MgAl2O4, and hybridization of 3d‐orbitals of Mn2+ with O(2p), Mg(2s)/Al(2s3p) was found to be responsible for narrowing the bandgap. The distribution of cations at various sites at random results in a variety of electronic transitions between the valance band and oxygen vacancies as well as electron traps produced the antisite defects. The suggested compositions might be used in white light applications since they have three emission bands with centers at 516 nm (green), 464 nm (blue) and 622 nm (red) at an excitation wavelength of 380 nm. A detailed discussion to analyze the effects of the larger cationic radius of Ba2+ on the lattice strain, unit cell parameters, and cell volumes using X‐ray diffraction analysis is presented.

中文翻译：

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用于显色白光发光二极管的新型黄绿色单相尖晶石Mg1−xBaxAl2O4:Mn2+荧光粉

对于白光渲染研究活动，使用彩色发光材料进行解释是一种替代方法。但白色发光材料的设计存在问题。特别是，离散的红色、绿色和蓝色发射材料的热和衰减特性的差异导致人们寻求一种能够发射原色以产生白光的单相材料。目前的研究致力于设计一种简单、单相且具有成本效益的材料，通过一系列镁来可调原色发射1−X巴X铝2氧4:锰2+纳米粉末。锰离子掺杂（Mn2+）在较大的钡阳离子（Ba2+）在尖晶石铝酸镁（MgAl2氧4) 结构导致反位点缺陷的产生。与 MgAl 相比，掺杂样品具有较低的带隙2氧4，以及 Mn 3d 轨道的杂化2+与 O(2p) 相比，Mg(2s)/Al(2s3p) 被发现是导致带隙变窄的原因。阳离子在各个位点的随机分布导致价带和氧空位之间的各种电子跃迁以及电子陷阱产生反位缺陷。所建议的组合物可用于白光应用，因为它们在380 nm的激发波长下具有中心位于516 nm（绿色）、464 nm（蓝色）和622 nm（红色）的三个发射带。详细讨论分析Ba较大阳离子半径的影响2+提出了使用 X 射线衍射分析对晶格应变、晶胞参数和晶胞体积的影响。