A stable copper-modified bipyridine mediator for highly efficient dye-sensitized solar cells

IF 7.9 2区综合性期刊 Q1 CHEMISTRY, MULTIDISCIPLINARY

Cell Reports Physical Science Pub Date : 2024-08-22 DOI:10.1016/j.xcrp.2024.102159

Yu-Hsuan Chen, Ching-Chin Chen, Vinh Son Nguyen, Xiao-Tong Jiang, Yan-Da Chen, Ming-You Li, Sheng-Yang Chen, Tzu-Chien Wei, Chen-Yu Yeh

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Abstract

Dye-sensitized solar cells (DSSCs) have garnered significant research attention for their cost-effectiveness, transparency, flexibility, etc. In this work, a copper complex of a bipyridine-modified mediator, [Cu(dmodmbp)₂]^+/2+, is developed to minimize the loss in fill factor (FF). A DA2 dye, inspired by the structures of previously reported LC4 and LC5 dyes, incorporates cascade acceptors to enhance light absorption and increase the short-circuit current (J_SC). These innovations lead to highly efficient DSSCs with an impressive power conversion efficiency (PCE) of 10.2% (J_SC = 12.10 mA cm⁻², open-circuit voltage [V_OC] = 1.11 V, FF = 0.764) as well as a remarkable photostability. A test over 95 days shows that 88% of the initial PCE can be maintained, with V_OC, J_SC, and FF retaining 98%, 97%, and 93% of their initial values, respectively.

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用于高效染料敏化太阳能电池的稳定铜改性联吡啶介质

染料敏化太阳能电池（DSSC）因其成本效益、透明度和灵活性等优点而备受研究关注。在这项工作中，我们开发了一种双吡啶修饰介质的铜络合物 [Cu(dmodmbp)2]+/2+，以尽量减少填充因子（FF）的损失。DA2 染料受先前报道的 LC4 和 LC5 染料结构的启发，加入了级联受体，以增强光吸收并增加短路电流（JSC）。这些创新带来了高效的 DSSC，其功率转换效率 (PCE) 达到了惊人的 10.2%（JSC = 12.10 mA cm-2，开路电压 [VOC] = 1.11 V，FF = 0.764），并且具有显著的光稳定性。95 天的测试表明，初始 PCE 可保持 88%，VOC、JSC 和 FF 分别保持了初始值的 98%、97% 和 93%。

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来源期刊

Cell Reports Physical Science Energy-Energy (all)

CiteScore

11.40

自引率

2.20%

发文量

388

审稿时长

62 days

期刊介绍： Cell Reports Physical Science, a premium open-access journal from Cell Press, features high-quality, cutting-edge research spanning the physical sciences. It serves as an open forum fostering collaboration among physical scientists while championing open science principles. Published works must signify significant advancements in fundamental insight or technological applications within fields such as chemistry, physics, materials science, energy science, engineering, and related interdisciplinary studies. In addition to longer articles, the journal considers impactful short-form reports and short reviews covering recent literature in emerging fields. Continually adapting to the evolving open science landscape, the journal reviews its policies to align with community consensus and best practices.