Fabrication of ZnO Nanowire Cold Cathode Flat-Panel X-ray Source with a Reflective Anode

作者：Chengyun Wang, Guofu Zhang, Qi Liu, Song Kang, Shaozhi Deng, Jun Chen · 发表于：Nanomaterials · 年份：2024 · DOI：10.3390/nano14181504 · 被引用次数：5 · 研究领域：Ga2O3 and related materials、Advanced Electron Microscopy Techniques and Applications、Nanowire Synthesis and Applications

A novel reflective anode flat-panel X-ray source using ZnO nanowire cold cathode and a metal anode has been developed. Simulation analysis indicated that the reflective anode structure reduces electric field concentration compared to a transmission anode structure. The current-voltage characteristics, X-ray radiation dose rate, and stability of the fabricated device were thoroughly characterized. The device demonstrated a maximum emission current of 481.1 μA and a maximum radiation dose rate of 303 μGy/s at an anode voltage of 40 kV. The X-ray imaging of various objects was also conducted. Our findings are of significance for developing high-performance, robust flat-panel X-ray sources for diverse applications.