化工进展 ›› 2025, Vol. 44 ›› Issue (S1): 350-367.DOI: 10.16085/j.issn.1000-6613.2025-0633

• 材料科学与技术 • 上一篇    

染料敏化太阳能电池氧化还原电对

管思颖(), 问金月, 焦守政(), 郝雨薇, 孙志成   

  1. 北京印刷学院印刷与包装工程学院,印刷电子工程技术研究中心,北京 102600
  • 收稿日期:2025-04-29 修回日期:2025-08-29 出版日期:2025-10-25 发布日期:2025-11-24
  • 通讯作者: 焦守政
  • 作者简介:管思颖(1999—),女,硕士研究生,研究方向为印刷电子材料。E-mail:884676098@qq.com
  • 基金资助:
    国家自然科学基金(22278037);国家自然科学基金(62371051);国家自然科学基金(61971049);国家自然科学基金(62211530446);北京市教育委员会科技研究计划(KM202310015005);北京市自然科学基金(2252034);材料科学与工程学科建设项目(21090124010);博士科研启动基金(27170124011);博士科研启动基金(20190225001);博士科研启动基金(Ed2025001);北京市高等教育学会项目(MS2022094)

Redox couple electrolyte in dye-sensitized solar cells​

GUAN Siying(), WEN Jinyue, JIAO Shouzheng(), HAO Yuwei, SUN Zhicheng   

  1. Beijing Engineering Research Center of Printed Electronics, School of Printing and Packaging Engineering, Beijing Institute of Graphic Communication, Beijing 102600, China
  • Received:2025-04-29 Revised:2025-08-29 Online:2025-10-25 Published:2025-11-24
  • Contact: JIAO Shouzheng

摘要:

回顾了染料敏化太阳能电池(DSSC)的发展与工作原理,介绍了电解液氧化还原电对在染料再生与其在电路闭合中的作用及其对开路电压(VOC)、短路电流(JSC)和填充因子(FF)的影响。本文阐述了能级匹配与动力学准则:以染料分子能级的“边界”与氧化还原电位、TiO₂导带位置解释再生与注入驱动力,结合介体扩散与对电极催化说明电流与填充因子来源。研究了近几年I⁻/I3-、Co(Ⅱ)/Co(Ⅲ)、Cu(Ⅰ)/Cu(Ⅱ)、2,2,6,6-四甲基-1-哌啶氧化物(TEMPO)/TEMPO+、四甲基对苯二酚/苯醌(HQ/BQ)与Br3-/Br⁻等体系的电位区间、光谱自吸收、扩散黏度与稳定性。结果说明,非碘体系整体更有利于获得高Voc与低自吸收,Cu/Co介体在低驱动力快速再生策略下的室内能量采集优势突出,进行比较后的优点体现在:可精确调控电位并兼顾扩散/选择性、与高活性对电极协同降低界面阻抗、在AM1.5G(光强1000W/m2)与1000lx条件下保持较高效率,最后对室内光伏DSSC在物联网(IoT)领域的可持续发展及应用进行了展望。

关键词: 染料敏化太阳能电池, 氧化还原电对, 非碘体系电解质, 室内光伏, 光电转换效率

Abstract:

This review surveyed the development and operating principles of dye-sensitized solar cells (DSSC), introduced the role of electrolyte redox couples in dye regeneration and electrochemical circuit closure, and analyzed their influence on the open-circuit voltage (VOC), short-circuit current density (JSC) and fill factor (FF). The energetic and kinetic design rules were elucidated, i.e., regeneration and injection driving forces were rationalized by aligning the dyes' frontier molecular orbitals with the redox potential and the TiO₂ conduction band, while current generation and FF were further governed by mediator diffusion and the catalytic activity of the counter electrode. The recent I⁻/I3-, Co(Ⅲ)/Co(Ⅱ), Cu(Ⅰ)/Cu(Ⅱ), TEMPO/TEMPO⁺, hydroquinone/benzoquinone (HQ/BQ) and Br₃⁻/Br⁻ systems were comparatively examined with respect to formal potential windows, visible-light self-absorption, diffusivity/viscosity and stability. The analysis showed that non-iodide mediators were, in general, more favorable for achieving higher VOC with reduced spectral competition. Cu-based and Co-based shuttles operated under low-overpotential and fast-regeneration conditions exhibited pronounced advantages for indoor energy harvesting. Relative to iodide, the key merits included electronically tunable potentials with balanced diffusion/selectivity, synergistic compatibility with high-activity counter electrodes that lowered interfacial impedance and robust efficiencies under AM 1.5G and 1000lx illumination. Finally, the prospects of DSSC indoor photovoltaics for sustainable Internet-of-Things (IoT) power supplies were outlined.

Key words: dye-sensitized solar cells, redox couple, non-iodine-based electrolyte systems, indoor photovoltaics, photovoltaic conversion efficiency

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