Study on the carrier transmission and luminescence characteristics of n-ZnO/p-Si heterojunction device by magnetron sputtering

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-01 DOI:10.1016/j.optmat.2024.116440

Yang Zhao, Meibo Xin, Jingzhe Li, Guojiao Xiang, Zhiang Yue, Xian Zhang, Enqin Zhao, Shuaikang Wei, Wenwen Jin, Chenfei Jiao, Ruofan Zhai, Fujing Dong, Kaiyuan Wang, Hui Wang

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Abstract

In this study, Zinc oxide film was prepared on a sapphire substrate and a n-ZnO/p-Si heterojunction was fabricated following the optimum preparation parameters obtained in the previous stage by radio frequency (RF) magnetron sputtering. The results showed that the diffraction peaks have a preferred crystal orientation of (002) along the c-axis, the surface of the sample shown widely distributed “pill-like” grains with an overall uniform and dense appearance and a large average grain size (70.13 nm) at 1.3 Pa. The diode demonstrated excellent I–V characteristics and the turn-on voltage showed a decreasing trend with increasing of operating temperature. The device showed a large rectification ratio of about 352.2 when the applied voltage was ±2 V and the series resistance of the diode was determined to be 0.1 Ω. It manifested an impressively low leakage current of 1.37 × 10⁻¹⁰ A. Finally, the device was examined using an electroluminescence (EL) system, which showed visible light emission from the deep level of ZnO. It could be seen that the EL spectrum was fitted by four peaks, which were located in blue (470 nm), yellow-green (575 nm) and red (721 nm, 752 nm).

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磁控溅射法 n-ZnO/p-Si 异质结器件的载流子传输和发光特性研究

本研究在蓝宝石衬底上制备了氧化锌薄膜，并按照前一阶段获得的最佳制备参数，通过射频（RF）磁控溅射制造了 n-ZnO/p-Si 异质结。结果表明，衍射峰沿 c 轴的优先晶体取向为 (002)，样品表面广泛分布着 "丸状 "晶粒，整体均匀致密，在 1.3 Pa 时平均晶粒尺寸较大（70.13 nm）。最后，利用电致发光（EL）系统对该器件进行了检测，结果显示 ZnO 的深层发出了可见光。可以看到，电致发光光谱有四个峰值，分别位于蓝色（470 纳米）、黄绿色（575 纳米）和红色（721 纳米和 752 纳米）。

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

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.