In this study, we investigate the use of cost-effective and commercial semi-transparent dry-deposited single-walled carbon nanotubes (SWCNTs) as counter electrodes (CE) in dye-sensitized solar cells (DSSCs) with copper redox-based electrolytes. Electrochemical impedance spectroscopy reveals a significant reduction in cell resistance (=36.15 Ω cm, =103.30Ω), showcasing improved electrochemical activity compared to conventional platinum (Pt) catalyst layers (=52.17 Ω cm, =149.04 Ω). Analyses indicate a 1.5 times larger electrochemical active surface area (ECSA) in dry-deposited SWCNTs-CE, emphasizing superior catalytic performance. These DSSCs with dry-deposited SWCNTs-CEs achieve photovoltaic performance comparable to Pt-CEs, with a champion device efficiency of 5.6 % under standard conditions and impressive power conversion efficiencies exceeding 9.5 % and 10 % at low light irradiance levels. A key innovation is the introduction of Maximum Power Point Tracking (MPPT) for DSSCs, conducted for the first time, providing a new dimension to the research. Moreover, a 650-hour long-term stability test under continuous light exposure demonstrates the potential of dry-deposited SWCNTs as promising alternative catalyst materials due to their high chemical compatibility. The study not only introduces a novel method for depositing commercial dry-deposited SWCNTs but also underscores the importance of further research to enhance the durability and reliability of DSSC devices.

中文翻译：

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干沉积单壁碳纳米管与铜氧化还原介体电解质共同辅助染料敏化太阳能电池的光稳定性

在这项研究中，我们研究了在采用铜氧化还原电解质的染料敏化太阳能电池（DSSC）中使用经济高效且商业化的半透明干沉积单壁碳纳米管（SWCNT）作为对电极（CE）。电化学阻抗谱显示电池电阻显着降低（= 36.15 Ω cm，= 103.30 Ω），与传统铂（Pt）催化剂层（= 52.17 Ω cm，= 149.04 Ω）相比，电化学活性得到改善。分析表明，干沉积 SWCNT-CE 的电化学活性表面积 (ECSA) 增大了 1.5 倍，强调了卓越的催化性能。这些采用干沉积 SWCNT-CE 的 DSSC 实现了与 Pt-CE 相当的光伏性能，在标准条件下的冠军器件效率为 5.6%，在低光辐照度水平下，功率转换效率超过 9.5% 和 10%。一项关键创新是首次引入 DSSC 最大功率点跟踪 (MPPT)，为研究提供了新的维度。此外，在连续光照下进行的 650 小时长期稳定性测试表明，干沉积 SWCNT 由于其高化学相容性而具有作为有前途的替代催化剂材料的潜力。该研究不仅介绍了一种沉积商业干沉积单壁碳纳米管的新方法，而且强调了进一步研究以提高 DSSC 设备的耐用性和可靠性的重要性。