CdTe quantum dots and polymer nanocomposites for x-ray scintillation and imaging
CdTe quantum dots and polymer nanocomposites for x-ray scintillation and imaging
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DOI：
10.1063/1.3589366
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发表时间：
2011-05-02
影响因子：
4
通讯作者：
Nagarkar, Vivek
中科院分区：
文献类型：
--
作者：
Kang, Zhitao;Zhang, Yuelan;Nagarkar, Vivek
本文报道了碲化镉量子点及其聚合物纳米复合材料的x射线闪烁和成像应用。制备了发射波长在510 ~ 680 nm之间的CdTe量子点，并将其掺入聚乙烯醇或聚甲基丙烯酸甲酯聚合物基质中。研究了复合材料的x射线发光性能，获得了5线/mm的分辨率。此外，与传统的电荷耦合器件相比，CdTe量子点纳米复合材料具有快速衰减时间、无余辉和优越的光谱匹配性，这表明CdTe量子点纳米复合材料在x射线成像应用中具有很高的前景。(C) 2011年美国物理研究所。(doi: 10.1063/1.3589366)
Investigations are reported on the x-ray scintillation and imaging application of CdTe quantum dots (QDs) and their polymer nanocomposites. Aqueous CdTe QDs with emissions ranging between 510 and 680 nm were prepared and incorporated into polyvinyl alcohol or polymethyl methacrylate polymer matrices. The x-ray luminescent properties were evaluated and a resolution of 5 lines/mm was obtained from the nanocomposite films. Additionally, the fast decay time, nonafterglow, and superior spectral match to conventional charge coupled devices, show that CdTe QD nanocomposites have high promise for x-ray imaging applications. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3589366]