Photovoltaic performance enhancement via cocktail co-sensitization of D–A–π–A and D–π–A–π–A dyes in dye-sensitized solar cells

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED Dyes and Pigments Pub Date : 2024-07-03 DOI:10.1016/j.dyepig.2024.112317

Meliha Gizem Bekmez , Nagihan Öztürk , Barış Seçkin Arslan , Davut Avcı , Mehmet Nebioğlu , İlkay Şişman

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Abstract

A novel organic dye (BIM37) featured with donor–auxiliary acceptor–π–acceptor (D–A–π–A) structure based on an acridine π–bridge has been designed and synthesized for dye-sensitized solar cells (DSSCs). Unlike the acridine-based D–π–A–π–A dyes (BIM25 and BIM26), BIM37 was obtained by inserting an auxiliary acceptor between the donor and π–bridge units. This modification leads to a significant red shift in the absorption spectrum compared to its counterparts. Thus, the DSSCs based on BIM37 achieved a power conversion efficiency (PCE) of 5.03%, which is higher than that of BIM25 (3.76%) or BIM26 (4.56%). To further improve the photovoltaic performance, the cocktail co-sensitization strategy was applied. In the presence of chenodeoxycholic acid (CDCA) as a co-adsorbent, the co-sensitized DSSC based on BIM37+BIM26 showed a high efficiency of 6.30%. This performance is superior to individual DSSCs with and without CDCA. The results show that molecular engineering for co-sensitization may be an effective strategy to improve the performance of DSSCs.

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通过染料敏化太阳能电池中 D-A-π-A 和 D-π-A-π-A 染料的鸡尾酒共敏化提高光伏性能

我们设计并合成了一种新型有机染料（BIM37），它具有基于吖啶π桥的供体-辅助受体-π-受体（D-A-π-A）结构，可用于染料敏化太阳能电池（DSSC）。与基于吖啶的 D-π-A-π-A 染料（BIM25 和 BIM26）不同，BIM37 是通过在供体和π桥单元之间插入一个辅助受体获得的。与同类产品相比，这种改性会导致吸收光谱发生明显的红移。因此，基于 BIM37 的 DSSC 实现了 5.03% 的功率转换效率 (PCE)，高于 BIM25（3.76%）或 BIM26（4.56%）。为了进一步提高光伏性能，我们采用了鸡尾酒共敏化策略。在苯去氧胆酸（CDCA）作为共吸附剂的情况下，基于 BIM37+BIM26 的共敏化 DSSC 显示出 6.30% 的高效率。这一性能优于单独使用或不使用 CDCA 的 DSSC。结果表明，共敏化分子工程可能是提高 DSSC 性能的有效策略。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.