Scholarlink

<p>A series of novel dye-based D-π-A-type metal-free organic dyes was prepared <i>via</i> the Wittig reaction. Dyes <b>SAS-1-5</b> containing triphenylamine (<b>TPA</b>) as a strong electron donor was linked with an aryl ring as <i>a π</i>-conjugation spacer, cyanoacetamide, 2-(phenylsulfonyl)acetonitrile, and thiazolidine as the electron acceptors. Herein, we confirmed the chemical structures of the co-sensitized triphenylamine sensitizers using spectral analyses. In addition, their optical properties, electrochemical characteristics, and photovoltaic performances were estimated. Theoretical density functional theory (DFT) at the B3LYP/6-311G(d, p) level was used to elucidate the bridged effect on geometry. The <b>SAS-1-5</b> sensitizers showed absorption bands in a dimethylformamide (DMF) solution in the range of (450–590&#xa0;nm) which led to an obvious enhancement in the visible harvesting ability. To improve the efficiency of the DSSCs, SAS-1-5 dyes were co-sensitized with the standard dye <b>N-719</b>. The power conversion efficiencies (<i>PCEs</i>) of <b>SAS-1-5</b> with <b>N-719</b> ranged from 7.39 to 9.12%. By employing <b>SAS-2</b> as a co-sensitizer, the DSSC system achieved an impressive 9.12% efficiency, which was 24% higher than that when using the <b>N-719</b> ruthenium complex dye. Furthermore, all TPA-based co-sensitizers (<b>SAS-1-5</b>) demonstrated considerable promise for improving photovoltaic performance.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Triphenylamine-Based Metal-Free Organic Dyes as Co-Sensitizers: Enhancing Dye-Sensitized Solar Cell Performance Through Innovative Molecular Design

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月16日

查看全文
  • Samar E. Mahmoud,
  • Safa A. Badawy,
  • Ahmed A. Fadda,
  • Ehab Abdel-Latif,
  • Mohamed R. Elmorsy

摘要

A series of novel dye-based D-π-A-type metal-free organic dyes was prepared via the Wittig reaction. Dyes SAS-1-5 containing triphenylamine (TPA) as a strong electron donor was linked with an aryl ring as a π-conjugation spacer, cyanoacetamide, 2-(phenylsulfonyl)acetonitrile, and thiazolidine as the electron acceptors. Herein, we confirmed the chemical structures of the co-sensitized triphenylamine sensitizers using spectral analyses. In addition, their optical properties, electrochemical characteristics, and photovoltaic performances were estimated. Theoretical density functional theory (DFT) at the B3LYP/6-311G(d, p) level was used to elucidate the bridged effect on geometry. The SAS-1-5 sensitizers showed absorption bands in a dimethylformamide (DMF) solution in the range of (450–590 nm) which led to an obvious enhancement in the visible harvesting ability. To improve the efficiency of the DSSCs, SAS-1-5 dyes were co-sensitized with the standard dye N-719. The power conversion efficiencies (PCEs) of SAS-1-5 with N-719 ranged from 7.39 to 9.12%. By employing SAS-2 as a co-sensitizer, the DSSC system achieved an impressive 9.12% efficiency, which was 24% higher than that when using the N-719 ruthenium complex dye. Furthermore, all TPA-based co-sensitizers (SAS-1-5) demonstrated considerable promise for improving photovoltaic performance.