Dye-sensitized solar cells fabricated using ZnO:Cu thin films and dye extracted from Hypericum perforatum L. flowers

IF 1 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

Digest Journal of Nanomaterials and Biostructures Pub Date : 2023-04-20 DOI:10.15251/djnb.2023.181.389

F. Göde, N. Balpınar

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引用次数: 1

Abstract

Dye-sensitized solar cells (DSSC) were designed utilizing pure and copper-doped zinc oxide (ZnO:Cu) nanoparticles and the dye extracted from dried Hypericum perforatum L. (H. perforatum) flowers. The ZnO:Cu thin films were grown using the successive ionic layer adsorption and reaction (SILAR) method on tin-doped indium oxide-coated (ITO) glass substrates at 85 °C. Regarding the molar ratio of Cu ions to Zn ions, Cu had a doping concentration of 0.5%, 1%, and 2%. The crystalline nature, morphological, compositional, and optical properties of the synthesized ZnO:Cu thin films were studied using an X-ray diffractometer (XRD), a scanning electron microscope (SEM), energy dispersive x-ray spectrometry (EDS), UV-vis spectroscopy, and Fourier transformation infrared (FTIR) spectroscopy. The SEM results indicated the formation of a porous structure on the surface of ZnO:Cu thin films, which provided more active sites for dye molecules and electrolyte ions. A DSSC, produced by using a pure ZnO thin film, showed a current density (Jsc) of 7.66 mA/cm2 with an open-circuit voltage (Voc) of 0.98 V and an overall efficiency (η) of 2.47%

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用ZnO:Cu薄膜和从贯叶连翘花中提取的染料制备染料敏化太阳能电池

染料敏化太阳能电池（DSSC）是利用纯的和铜掺杂的氧化锌（ZnO:Cu）纳米颗粒以及从干燥的贯叶金丝桃（H.perforatum）花中提取的染料来设计的。采用连续离子层吸附和反应（SILAR）方法在85°C的锡掺杂氧化铟涂层（ITO）玻璃衬底上生长了ZnO:Cu薄膜。关于Cu离子与Zn离子的摩尔比，Cu具有0.5%、1%和2%的掺杂浓度。使用X射线衍射仪（XRD）、扫描电子显微镜（SEM）、能谱仪（EDS）、紫外-可见光谱和傅里叶变换红外光谱（FTIR）研究了合成的ZnO:Cu薄膜的结晶性质、形态、组成和光学性能。SEM结果表明，ZnO:Cu薄膜表面形成了多孔结构，为染料分子和电解质离子提供了更多的活性位点。使用纯ZnO薄膜生产的DSSC显示出7.66mA/cm2的电流密度（Jsc），0.98V的开路电压（Voc）和2.47%的总效率（η）

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