Transparent perovskite-based nanoceramics elaborated from full glass crystallization

IF 5.8 3区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Nanoscale Pub Date : 2025-06-25 DOI:10.1039/d5nr01725d
Jie Fu, Guoguo Zhang, Han-Yu Zou, Chengzhi Wang, Cécile Genevois, Emmanuel Véron, Mathieu Allix, Jianqiang Li
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引用次数: 0

Abstract

All-inorganic perovskite nanocrystals are considered promising candidates for applications in optoelectronics including light-emitting diodes (LEDs), phosphors, solar cells and photodetectors, etc. However, all-inorganic perovskite nanocrystals mainly exist in the form of powders and single crystals. The former often suffers from limited chemical stability and large dependence on matrix materials, while the latter typically involves long-term and complex preparation processes. In this paper, we report the successful synthesis of a transparent GdAlO3 (GdAP)-based perovskite nanocrystalline ceramic for the first time using a low-temperature (1000 °C) glass crystallization of 74 mol% Al2O3-26 mol% Gd2O3 bulk glass. And, among which the bulk glass is prepared by a containerless solidification process. The resulting ceramics exhibit a biphasic nanostructure composed of GdAP main phase (76.9 wt%) and Al2O3 secondary phase (23.1 wt%). The fully dense GdAP-Al2O3 nanoceramics demonstrate a good transmittance of 77%@780 nm and an excellent mechanical property (hardness is 24 GPa). When doped with Tb3+, the transparent Tb:GdAP-Al2O3 perovskite nanocrystalline ceramics can be efficiently excited under ultraviolet radiation at 369 nm to emit green fluorescence at 544 nm. Moreover, XEL spectra show that the luminous intensity of transparent 7%Tb:GdAP-Al2O3 perovskite nanocrystalline ceramic is approximately 4.5 times higher than that of the commercial BGO single crystal. Additionally, the light yield of transparent 7%Tb:GdAP-Al2O3 perovskite nanocrystalline ceramics is calculated to be approximately 45,000 ph/MeV. Therefore, the transparent GdAP-Al2O3 perovskite nanocrystalline ceramics presented in this paper exhibit good transmittance, excellent mechanical properties, and promising X-ray detection performance, demonstrating wide potential applications in a wide range of optical fields, including optical windows, lenses, scintillators, X-ray detection imaging, and phosphors.
透明钙钛矿基纳米陶瓷是由全玻璃结晶制备的
全无机钙钛矿纳米晶体被认为是光电子学应用的有前途的候选者,包括发光二极管(led)、荧光粉、太阳能电池和光电探测器等。然而,全无机钙钛矿纳米晶主要以粉末和单晶的形式存在。前者通常具有有限的化学稳定性和对基体材料的很大依赖,而后者通常涉及长期和复杂的制备过程。在本文中,我们报道了首次使用74 mol% Al2O3-26 mol% Gd2O3的低温(1000℃)玻璃结晶,成功合成了透明的GdAlO3 (GdAP)基钙钛矿纳米晶陶瓷。其中,块状玻璃采用无容器固化工艺制备。所制得的陶瓷呈现由GdAP主相(76.9% wt%)和Al2O3次相(23.1% wt%)组成的双相纳米结构。GdAP-Al2O3纳米陶瓷具有良好的透光率(77%@780 nm)和优异的力学性能(硬度为24 GPa)。当掺杂Tb3+时,透明的Tb:GdAP-Al2O3钙钛矿纳米晶陶瓷在369 nm的紫外辐射下被有效激发,在544 nm处发出绿色荧光。XEL光谱显示,7%Tb:GdAP-Al2O3透明钙钛矿纳米晶陶瓷的发光强度约为商用BGO单晶的4.5倍。此外,7%Tb:GdAP-Al2O3透明钙钛矿纳米晶陶瓷的光产率约为45,000 ph/MeV。因此,本文所制备的透明GdAP-Al2O3钙钛矿纳米晶陶瓷具有良好的透光率、优异的力学性能和良好的x射线探测性能,在光学窗口、透镜、闪烁体、x射线探测成像、荧光粉等广泛的光学领域具有广阔的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Nanoscale
Nanoscale CHEMISTRY, MULTIDISCIPLINARY-NANOSCIENCE & NANOTECHNOLOGY
CiteScore
12.10
自引率
3.00%
发文量
1628
审稿时长
1.6 months
期刊介绍: Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.
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