Diamond–Rare Earth Composites with Embedded NaGdF4:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens,ACS Applied Nano Materials

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Diamond–Rare Earth Composites with Embedded NaGdF4:Eu Nanoparticles as Robust Photo- and X-ray-Luminescent Materials for Radiation Monitoring Screens
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2020-01-30 , DOI: 10.1021/acsanm.9b02175
Vadim Sedov ₁ , Sergey Kouznetsov ₁ , Artem Martyanov ₁ , Vera Proydakova ₁ , Victor Ralchenko _{1,

2} , Andrey Khomich _{1,

3} , Valery Voronov ₁ , Sergey Batygov ₁ , Irina Kamenskikh ₄ , Dmitry Spassky ₅ , Sergey Savin ₆ , Pavel Fedorov _{1,

6}

Affiliation

Thin-film diamond–rare earth fluoride nanocomposites have been produced by chemical vapor deposition to be used as a source of intensive photo- and X-ray luminescence. The composites with embedded Eu-containing nanoparticles show high-intensity orange narrow-band photoluminescence near the wavelength of 612 nm. Using β-NaGdF₄:Eu instead of Eu(III) tri-(2,6-pyridine dicarboxylic acid) and europium fluoride in the diamond matrix resulted in enhanced signal/noise ratio in the luminescence. The mapping of the spatial distribution of photoluminescence intensity on macro- and micro scale revealed highly uniform emission originated from the composite. The developed composite material with mechanically strong, highly thermally conducting and transparent diamond matrix opens a way to use the diamond–fluoride composites as photo- and X-ray luminescent screens (scintillators) capable to withstand high photon fluxes.

中文翻译：

具有嵌入式NaGdF _4的金刚石-稀土复合材料：Eu纳米颗粒作为用于辐射监测屏幕的可靠的光和X射线发光材料

薄膜金刚石-稀土氟化物纳米复合材料是通过化学气相沉积法制成的，可用作强烈的光和X射线发光源。具有嵌入的含Eu纳米粒子的复合材料在612 nm波长附近显示高强度橙色窄带光致发光。使用β-NaGdF ₄：Eu代替Eu（III）三-（2,6-吡啶二羧酸）和氟化euro在金刚石基质中的发光增强了信噪比。宏观和微观尺度上的光致发光强度的空间分布图揭示了源自复合材料的高度均匀的发射。具有机械强度高，导热性高和透明的金刚石基体的复合材料开辟了一种途径，可以将氟化金刚石复合物用作能够承受高光子通量的光和X射线荧光屏（闪烁体）。

更新日期：2020-01-31

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