Fabrication and X-Ray Excited Luminescence of Ga- and In-Doped ZnO Nanorods

Li, Qianli; Liu, Xiaolin; Gu, Ming; Huang, Shiming; Ni, Chen; Liu, Bo; Hu, Yahua; Sun, Shouqiang; Zhang, Zhiyuan

doi:10.1109/tns.2015.2505059

Cited by 9 publications

(2 citation statements)

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“…In order to meet demands for fast X-ray imaging detectors, the scintillator screens must have fast decay time properties. Although the NBE UV emission in ZnO is known to have superfast sub-nanosecond ultraviolet luminescence, the VE still satisfies the condition of a fast X-ray detector with its nanosecond-scale decay time 35 , 36 , 61 . The room temperature time resolved PL (TRPL) technique was used to determine the decay time response.…”

Section: Resultsmentioning

confidence: 99%

“…Xu et al 34 have grown ZnO NRs with 2 µm thickness for X-ray imaging applications. Li et al 35 , 36 have developed hydrothermally grown doped ZnO micro/nano arrays to generate strong VE spectra in the range of 450–700 nm. They found that Ga and In doped ZnO micro/nano arrays exhibited a superior X-ray excited luminescence performance, which serves as a key indicator for high-spatial-resolution, fast X-ray imaging.…”

Section: Introductionmentioning

confidence: 99%

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Solution processed high aspect ratio ultra-long vertically well-aligned ZnO nano scintillators for potential X-ray imaging applications

Kurudirek,

Erickson

et al. 2024

Sci Rep

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We report the photon (PL), electron (CL) and X-ray (XEL) induced luminescence characteristics of high aspect ratio ultra-long (~ 50 µm) ZnO nanorods (NRs) and discuss the potential for fast X-ray detection based on the consistent and efficient visible emission (~ 580 nm) from ZnO NRs. Nanostructured ZnO scintillators were rearranged to form a vertically well-aligned NR design in order to help light absorption and coupling resulting in luminescent and fast scintillation properties. The design of the nanorod array combines the key advantages of a low-cost growth technique together with environmentally friendly and widely available materials. A low temperature hydrothermal method was adopted to grow ZnO NRs in one cycle growth and their structural, optical and X-ray scintillation properties were investigated. The relatively short (~ 10 µm) ZnO NRs emitting in the near-band-edge region were found to be almost insensitive to X-rays. On the other hand, the higher XEL response of long ZnO NRs, which is a key parameter for evaluation of materials to be used as scintillators for high quality X-ray detection and imaging, along with a decay time response in the order of ns confirmed promising scintillation properties for fast and high-resolution X-ray detector applications.

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Section: Resultsmentioning

confidence: 99%