Enhanced scintillation performance of Cu-doped β-Ga2O3 single crystals grown by floating-zone method

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-07 DOI:10.1088/1361-6641/ad3114

Qing Fan, Lixiang Wang, Xu Gao, Yuchao Yan, Ming Li, Zhu Jin, Yanjun Fang, Ning Xia, Hui Zhang, Deren Yang

引用次数: 0

Abstract

As a booming semiconductor material, -Ga2O3 with an ultra-wide bandgap of 4.8 eV exhibits several advantages in scintillator with high stability and low self-absorption. To further improve the scintillation performance, we grown unintentionally doped (UID), Cu-, Fe-, Mg-, and Si-doped -Ga2O3 substrates by the floating zone (FZ) method. The 0.1 mol% Cu-doped -Ga2O3 exhibits the highest light yield of 6975 ph/MeV with a good linear response, which represents better predictable and stable for the input X-ray energy. Photoluminescence (PL) shows peak emission around 425 nm under the excitation of 254 nm. All the results shows that the Cu-doped -Ga2O3 is an effective scintillator with excellent light yield, which provides an alternative way for the high-performance ionizing radiation detectors.

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浮区法生长的掺铜 β-Ga2O3 单晶闪烁性能的提升

作为一种蓬勃发展的半导体材料，-Ga2O3 具有 4.8 eV 的超宽带隙，在闪烁体中具有高稳定性和低自吸收等优点。为了进一步提高闪烁性能，我们采用浮区（FZ）法生长了无意掺杂（UID）、铜掺杂、铁掺杂、镁掺杂和硅掺杂的 -Ga2O3 衬底。掺杂 0.1 mol% Cu 的 -Ga2O3 显示出最高的光产率 6975 ph/MeV，具有良好的线性响应，对输入的 X 射线能量具有更好的可预测性和稳定性。在 254 nm 的激发下，光致发光（PL）在 425 nm 附近达到发射峰值。所有这些结果表明，掺铜的 -Ga2O3 是一种有效的闪烁体，具有出色的光产率，为高性能电离辐射探测器提供了另一种途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.