Aluminum hydroxides are considered to be a potential abundant, low‐cost blue emissive material to construct UV‐pumped white light‐emitting diodes (WLEDs). In this work, a single‐source precursor chemical vapor decomposition method is adapted to fabricate stable, strongly emissive aluminum hydroxide phosphors with photoluminescence quantum yield of up to 69% in solid state by thermal decomposing aluminum diacetate hydroxide (Al(OH)(Ac)₂) at temperatures (260–360 °C) in N₂ atmosphere. It exhibits layered, amorphous structure and its emission of aluminum hydroxide is enhanced by electron‐donating surface hydroxyl groups and originates from F⁺ centers and carbon‐related defects contributing to UV (388 nm) and blue (450–520 nm) spectral regions, respectively. Employing the as‐fabricated aluminum hydroxides as blue phosphor and CuInS₂ nanocrystals as red phosphor, high color rendering and high‐efficiency WLEDs with luminous efficiencies up to 37 lm W⁻¹ and high color rendering index of 91 are fabricated. This is the best performance reported so far for aluminum hydroxide based LEDs.

中文翻译：

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用于紫外泵浦白光发射装置的稳定的，明亮的发光氢氧化铝荧光粉的单源前驱体化学气相分解方法

氢氧化铝被认为是构造紫外泵浦的白色发光二极管（WLED）的潜在的丰富，低成本的蓝色发光材料。在这项工作中，单源前驱体化学气相分解方法适用于通过热分解氢氧化二醋酸铝（Al（OH）（Ac）来制造稳定的强发射氢氧化铝磷光体，固态时的光致发光量子产率高达69％）。₂）在N ₂大气中的温度（260–360°C）下。它显示出层状的无定形结构，并且氢的散发通过给电子的表面羟基而增强，并且源自F ⁺中心和与碳有关的缺陷分别对紫外线（388 nm）和蓝色（450–520 nm）光谱区域有贡献。使用预制的氢氧化铝作为蓝色磷光体，并使用CuInS ₂纳米晶体作为红色磷光体，制造了发光效率高达37 lm W ^-1和高显色指数为91的高显色性和高效率WLED 。这是迄今为止针对氢氧化铝基LED所报告的最佳性能。