利用 CuO@Fe3O4/n-Si 的协同效应制造高效光电二极管

IF 4.3 3区 材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY
A. Murugan , Chitirala Rohit , Amanullah Fatehmulla , Sahariya Priya , Sung Soo Han , Shaik Babu , S. Bharathkumar , Sakar Mohan , Hector Valdes
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引用次数: 0

摘要

利用滴铸法,采用纯 CuO、Fe3O4 和 CuO@Fe3O4 纳米复合材料(NC)制造了高性能光电探测器。这些器件旨在实现更高的响应度(R)、光敏度(Ps)、检测度(D∗)和外部量子效率(EQE)。XRD 结果表明,CuO@Fe3O4 NC 的晶粒尺寸减小到 20 nm 左右,而纯 CuO 为 23 nm,纯 Fe3O4 为 25 nm。此外,拉曼分析和傅立叶变换红外分析也证实了这些发现。据估计,纯 CuO 和 Fe3O4 的带隙能分别约为 1.25 和 1.22 eV,而 CuO@Fe3O4 NC 的带隙能较低,为 1.13 eV,这是由于 CuO 和 Fe3O4 之间存在界面。值得注意的是,所制备的 CuO@Fe₃O₄/n-Si 光电二极管在光照下具有优异的整流特性,其意向系数(n)为 2.87,势垒高度(ΦB)为 0.83 eV。该器件的 Ps 值高达 773.4 %,R 值达 542.6 mA/W,EQE 值达 208.7 %,D∗ 值达 2.91 × 1012 Jones,表明 CuO@Fe3O4 NC 是本研究中最有效的光电探测材料。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Harnessing the synergistic effect of CuO@Fe3O4/n-Si for high-efficiency photodiodes

Harnessing the synergistic effect of CuO@Fe3O4/n-Si for high-efficiency photodiodes
High-performance photodetectors were fabricated using drop-casting method, employing pure CuO, Fe3O4 and CuO@Fe3O4 nanocomposite (NC). These devices aim to achieve enhanced responsivity (R), photosensitivity (Ps), detectivity (D∗), and external quantum efficiency (EQE). The XRD results indicate that the crystallite size of the CuO@Fe3O4 NC was reduced to around 20 nm, compared to 23 nm for pure CuO and 25 nm for pure Fe3O4. In addition, phase purity and functional groups were corroborated by Raman and FTIR analysis, supporting these findings. The bandgap energy of pure CuO and Fe3O4 was estimated to be around 1.25 and 1.22 eV, respectively, while the CuO@Fe3O4 NC exhibited a lower bandgap energy of 1.13 eV due to the interface between CuO and Fe3O4. Notably, the fabricated CuO@Fe₃O₄/n-Si photodiode exhibited excellent rectification properties under illumination, with an ideality factor (n) of 2.87 and a barrier height (ΦB) of 0.83 eV. The device achieved high Ps of 773.4 %, R of 542.6 mA/W, EQE of 208.7 %, and D∗ of 2.91 × 1012 Jones, demonstrating that the CuO@Fe3O4 NC is the most effective material for photodetection in this study.
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来源期刊
Journal of Physics and Chemistry of Solids
Journal of Physics and Chemistry of Solids 工程技术-化学综合
CiteScore
7.80
自引率
2.50%
发文量
605
审稿时长
40 days
期刊介绍: The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.
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