掺杂氧化锌纳米结构在光伏太阳能电池中的应用

Tyona Md
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引用次数: 9

摘要

本文综述了氧化锌和铜掺杂对其结构、形态、光学和表面润湿性的影响及其对光电化学太阳能电池性能的影响。掺杂溶液中的铜掺杂量在1 ~ 5 at的范围内变化。%,显著影响ZnO的性能。由于Cu- 2+成功取代Zn - 2+,并在3at处提高了膜的结晶度,因此Cu掺杂氧化锌(CZO)电极的晶格参数发生了微小的变化。由于减少了薄膜中的晶体缺陷。在不同的Cu浓度范围内,纳米棒的表面形貌被报道为密集生长。具有最致密的微观结构,平均直径约为125纳米。光学性质的回顾表明,具有3 at的纳米棒在可见光波段约60 nm的吸收边缘有显著增强。% Cu含量由于光散射。Cu掺杂后,光能带隙从3.03 eV减小到2.70 eV。所有膜的表面润湿性被判定为亲水性,这意味着高孔隙率和水接触角取决于Cu含量。电化学电池在硫酸钠(na2so4)电解液中表现出n型光活性,进一步验证了其在太阳能电池中的应用可行性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Doped Zinc Oxide Nanostructures for Photovoltaic Solar Cells Application
Zinc oxide and doping effects of Cu on its structural, morphological, optical, and surface wettability properties and the consequent influence on photoelectrochemical solar cell performance has been reviewed. Cu dopant in the doping solution is varied in the range of 1 to 5 at.% which significantly affected the properties of ZnO. Slight changes in the lattice parameters of the Cu-doped zinc oxide (CZO) electrodes were reported, due to the successful substitution of Zn 2+ by Cu 2+ and also enhancement in crystallinity of the films at 3 at.% Cu due to reduction in crystallographic defects in the film. Surface morphologies were reported with densely grown nanorods over the varied range of Cu, with 3 at.% having the densest microstructures with average diameter approximately 125 nm. A review of optical properties indicated significant enhancement in absorption edge of approximately 60 nm into the visible band for the nanorods with 3 at.% Cu content due to light scattering. Optical energy band-gaps decrease from 3.03 to 2.70 eV with Cu doping. Surface wettability was adjudged hydrophilic for all the films, implying high porosity and water contact angles depended on Cu content. Photoelectrochemical cell performance indicated an n-type photoactivity in sodium sulfate (Na 2 SO 4 ) electrolyte, which motivates to check its feasibility in solar cell applications.
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