材料科学
拉曼光谱
薄膜
光伏
太阳能电池
溅射
微晶
带隙
溅射沉积
薄脆饼
光谱学
光电子学
分析化学(期刊)
纳米技术
光伏系统
光学
化学
冶金
生态学
物理
生物
量子力学
色谱法
作者
M. I. Rodríguez-Tapiador,J.M. Asensi,M. Roldán,J. Merino,J. Bertomeu,S. Fernández
出处
期刊:Coatings
[MDPI AG]
日期:2023-06-13
卷期号:13 (6): 1094-1094
被引量:2
标识
DOI:10.3390/coatings13061094
摘要
Copper nitride (Cu3N) has gained significant attention recently due to its potential in several scientific and technological applications. This study focuses on using Cu3N as a solar absorber in photovoltaic technology. Cu3N thin films were deposited on glass substrates and silicon wafers via radio-frequency magnetron sputtering at different nitrogen flow ratios with total pressures ranging from 1.0 to 5.0 Pa. The thin films’ structural, morphology, and chemical properties were determined using XRD, Raman, AFM, and SEM/EDS techniques. The results revealed that the Cu3N films exhibited a polycrystalline structure, with the preferred orientation varying from 100 to 111 depending on the working pressure employed. Raman spectroscopy confirmed the presence of Cu-N bonds in characteristic peaks observed in the 618–627 cm−1 range, while SEM and AFM images confirmed the presence of uniform and smooth surface morphologies. The optical properties of the films were investigated using UV-VIS-NIR spectroscopy and photothermal deflection spectroscopy (PDS). The obtained band gap, refractive index, and Urbach energy values demonstrated promising optical properties for Cu3N films, indicating their potential as solar absorbers in photovoltaic technology. This study highlights the favourable properties of Cu3N films deposited using the RF sputtering method, paving the way for their implementation in thin-film photovoltaic technologies. These findings contribute to the progress and optimisation of Cu3N-based materials for efficient solar energy conversion.
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