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首页> 外文期刊>ChemPlusChem >ZnO Nanostructures for Dye-Sensitized Solar Cells Using the TEMPO+/TEMPO Redox Mediator and Ruthenium(II) Photosensitizers with 1,2,3-Triazole-Derived Ligands
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ZnO Nanostructures for Dye-Sensitized Solar Cells Using the TEMPO+/TEMPO Redox Mediator and Ruthenium(II) Photosensitizers with 1,2,3-Triazole-Derived Ligands

机译：使用Tempo + / Tempo Redox介体和钌（II）光敏剂具有1,2,3-三唑衍生的配体的染料敏化太阳能电池的ZnO纳米结构

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摘要

A series of thiocyanate-free bis(tridentate) ruthenium(II) complexes incorporating 1,2,3-triazole-derived NNN-, NCN-, and CNC-coordinating ligands has been employed for sensitizing ZnO photoanodes for dye-sensitized solar cells (DSSCs). Additionally, the first use of the TEMPO+/TEMPO (2,2,6,6-tetramethyl- piperidine-1-oxyl) redox mediator as a surrogate for the I-3(-)/I- redox couple in ZnO nanostructured DSSCs is presented. Compared with I-3(-)/I- based electrolytes, shorter charge life-times and diffusion lengths were determined for the TEMPO+ /TEMPO-based electrolyte. Nonetheless, similar power conversion efficiencies (PCEs) were achieved with both electrolytes for the RuNCN and RuCNC complexes, whereas higher PCEs are enabled by the iodine-free electrolyte in case of RuNNN.The combination of the molecular sensitizers and the TEMPO-based electrolyte exhibits relatively high external quantum efficiency (EQE) and promising PCEs, ranging from 4.48 to 1.47 %, which are-in part-comparable to that of ZnO-DSSCs with the benchmark N749 black dye. The TEMPO-based electrolyte also exhibits less absorption compared with its I-3(-)/I- counterpart, a favorable feature for enhancing the light harvesting ability of the photoanode. Furthermore, the results show the effect of the dye-sensitization procedure on the PCE values: The use of ethanol as the solvent compared with methanol increases the DSSC's efficiency, which is attributed to improved chemisorption of the sensitizer onto the ZnO surface.
机译：已经使用包含1,2,3-三唑衍生的NNN-，NCN-和CNC协调配体的一系列无氰酸酯的双（II）钌（II）络合物用于敏化染料敏化太阳能电池的ZnO光阳极（ DSSCS）。另外，Tempo + / Tempo（2,2,6,6-四甲基 - 哌啶-1- ox- oxyl）氧化还原介体作为ZnO纳米结构DSSCs中的I-3（ - ）/ I-氧化还原耦合的替代剂的首次使用提出了。与I-3（ - ）/ I基电解质相比，针对Tempo + / Tempo的电解质确定较短的充电寿命和扩散长度。尽管如此，通过对RUNCN和RUCNC复合物的两个电解质实现了类似的功率转换效率（PCE），而在RUNNN的情况下，通过无碘电解质使能较高的PCE。分子敏化剂和基于节奏的电解质展示的组合外部量子效率（EQE）和有前途的PCE相对较高，范围为4.48至1.47％，其与基准N749黑色染料的ZnO-DSSCS相当。与其I-3（ - ）/ I-对应相比，基于Tempo的电解质也表现出更少的吸收，这是一种有利于增强光电码的光收集能力的有利特征。此外，结果表明染料敏化程序对PCE值的影响：与甲醇相比，使用乙醇作为溶剂增加了DSSC的效率，这归因于改善敏化剂在ZnO表面上的化学吸附。

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  • 来源
    《ChemPlusChem》 |2016年第12期|共11页
  • 作者

    Wahyuono Ruri Agung; Schulze Benjamin; Rusu Mihai; Waechtler Maria; Dellith Jan; Seyring Martin; Rettenmayr Markus; Plentz Jonathan; Ignaszak Anna; Schubert Ulrich S.; Dietzek Benjamin;

  • 作者单位

    Leibniz Inst Photon Technol IPHT Jena eV Albert Einstein Str 9 D-07745 Jena Germany;

    Friedrich Schiller Univ Jena Inst Phys Chem Humboldtstr 10 D-07743 Jena Germany;

    Univ Babes Bolyai Fac Phys M Kogsalniceanu 1 Cluj Napoca 400084 Romania;

    Leibniz Inst Photon Technol IPHT Jena eV Albert Einstein Str 9 D-07745 Jena Germany;

    Leibniz Inst Photon Technol IPHT Jena eV Albert Einstein Str 9 D-07745 Jena Germany;

    Friedrich Schiller Univ Jena Otto Schott Inst Mat Res Lobdergraben 32 D-07743 Jena Germany;

    Friedrich Schiller Univ Jena Otto Schott Inst Mat Res Lobdergraben 32 D-07743 Jena Germany;

    Leibniz Inst Photon Technol IPHT Jena eV Albert Einstein Str 9 D-07745 Jena Germany;

    Friedrich Schiller Univ Jena Inst Phys Chem Humboldtstr 10 D-07743 Jena Germany;

    Friedrich Schiller Univ Jena Inst Phys Chem Humboldtstr 10 D-07743 Jena Germany;

    Leibniz Inst Photon Technol IPHT Jena eV Albert Einstein Str 9 D-07745 Jena Germany;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

    dye-sensitized solar cells; iodine-free; ruthenium; thiocyanate-free; ZnO;

    机译：染料敏化太阳能电池;无碘;钌;硫氰酸酯;ZnO;

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