Evaluation of Dye Loading on Photoanodes of Dye-Sensitized Solar Cells Utilizing a Mixture of TiO2 and Magnesium/Aluminum Layered Double Hydroxide (LDH)

IF 2.5 4区工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC Journal of Electronic Materials Pub Date : 2024-07-15 DOI:10.1007/s11664-024-11211-9

Kareem Jumaah Jibrael Al-Salihi

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Abstract

This research focused on developing photoanodes for dye-sensitized solar cells (DSSCs) by combining titanium dioxide (TiO₂), layered double hydroxide (LDH), and TiO₂-LDH composites. DSSCs were fabricated using different photoanode materials, including TiO₂, LDH, and various TiO₂-LDH ratios sensitized with N719 dye and employing an iodide/triiodide redox couple electrolyte. Under simulated sunlight, TiO₂-based DSSCs achieved an impressive 4.57% energy conversion efficiency, while LDH-based devices only reached 0.62%. DSSCs with varying TiO₂-LDH ratios demonstrated efficiencies of 2.4%, 3.2%, and 3.3% for 1:1, 1:3, and 1:5 ratios, respectively. The superior performance of TiO₂-based DSSCs was attributed to higher electron transfer efficiency. Dye loading analysis revealed that TiO₂ had the highest dye loading due to its extensive surface area, while LDH had the lowest loading. Adsorption kinetics of N719 dye on TiO₂ and LDH films indicated a pseudo-second-order model, suggesting chemical interactions between dye molecules and surface sites.

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利用二氧化钛和镁/铝层状双氢氧化物（LDH）混合物的染料敏化太阳能电池光阳极上的染料负载评估

本研究主要通过二氧化钛（TiO2）、层状双氢氧化物（LDH）和二氧化钛-LDH复合材料制备染料敏化太阳能电池（DSSCs）的光阳极。采用不同的光阳极材料制备DSSCs，包括TiO2、LDH和不同的TiO2-LDH比例，用N719染料敏化，并采用碘化物/三碘化物氧化还原偶电解质。在模拟阳光下，基于tio2的DSSCs的能量转换效率达到了令人印象深刻的4.57%，而基于ldh的器件仅达到0.62%。不同TiO2-LDH比例的DSSCs在1:1、1:3和1:5比例下的效率分别为2.4%、3.2%和3.3%。二氧化钛基DSSCs的优异性能归因于其较高的电子转移效率。染料负载分析表明，TiO2由于其广泛的表面积而具有最高的染料负载，而LDH具有最低的负载。N719染料在TiO2和LDH薄膜上的吸附动力学表现为准二阶模型，表明染料分子与表面位点之间存在化学相互作用。图形抽象

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来源期刊

Journal of Electronic Materials 工程技术-材料科学：综合

CiteScore

4.10

自引率

4.80%

发文量

693

审稿时长

3.8 months

期刊介绍： The Journal of Electronic Materials (JEM) reports monthly on the science and technology of electronic materials, while examining new applications for semiconductors, magnetic alloys, dielectrics, nanoscale materials, and photonic materials. The journal welcomes articles on methods for preparing and evaluating the chemical, physical, electronic, and optical properties of these materials. Specific areas of interest are materials for state-of-the-art transistors, nanotechnology, electronic packaging, detectors, emitters, metallization, superconductivity, and energy applications. Review papers on current topics enable individuals in the field of electronics to keep abreast of activities in areas peripheral to their own. JEM also selects papers from conferences such as the Electronic Materials Conference, the U.S. Workshop on the Physics and Chemistry of II-VI Materials, and the International Conference on Thermoelectrics. It benefits both specialists and non-specialists in the electronic materials field. A journal of The Minerals, Metals & Materials Society.