Author:
Liang Hui-Li,Cui Shu-Juan,Huo Wen-Xing,Wang Tao,Zhang Yong-Hui,Quan Bao-Gang,Du Xiao-Long,Mei Zeng-Xia
Abstract
Direct ZnO x-ray detectors with tunable sensitivity are realized by delicately controlling the oxygen flux during the sputtering deposition process. The photocurrents induced by x-rays from a 40 kV x-ray tube with a Cu anode increase apparently as the oxygen flux decreases, which is attributed to the introduction of Vo detects. By introducing Vo defects, the annihilation rate of the photo-generated electron-hole pairs will be greatly slowed down, leading to a remarkable photoconductive gain. This finding informs a novel way to design the x-ray detectors based on abundant oxide materials.
Subject
General Physics and Astronomy
Cited by
10 articles.
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