Exploring the Role of Donor–Acceptor Interactions in Phenothiazine Organic Dyes and Their Implications for Quasi-Solid-State Dye-Sensitized Solar Cells

Rakesh A. Afre, Ka Yeon Ryu, Won Suk Shin and Diego Pugliese ()
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Rakesh A. Afre: Department of Engineering Science, Zeal College of Engineering and Research, Survey No. 39, Narhe-Dhayari Road, Narhe, Pune 411 041, Maharashtra, India
Ka Yeon Ryu: Research Institute of Molecular Alchemy, Gyeongsang National University, 501 Jinju-daero, Gyeongsangnam-do, Jinju-Si 52828, Republic of Korea
Won Suk Shin: Advanced Energy Materials Research Center, Korea Research Institute of Chemical Technology (KRICT), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
Diego Pugliese: National Institute of Metrological Research (INRiM), Strada delle Cacce 91, 10135 Torino, Italy

Energies, 2024, vol. 17, issue 24, 1-19

Abstract: This study introduces novel phenothiazine-based organic dyes, 2-LBH-100, 2-LBH-44, and 2-Ryu-4, specifically designed for quasi-solid-state dye-sensitized solar cells (QsDSSCs). Employing a donor-π-acceptor architecture, these dyes incorporate varying electron-donating moieties, including bis(3-(hexyloxy)phenyl)amine and diphenylamino, coupled with a cyanoacrylic acid acceptor. Alkoxy substitutions in 2-LBH-100 and 2-LBH-44 enhanced solubility and dye loading on TiO 2 , leading to improved performance in QsDSSCs. 2-LBH-100 exhibited a power conversion efficiency (PCE) exceeding 5% with excellent stability, while 2-LBH-44 demonstrated a PCE of over 3%, increasing to 4% over time. 2-Ryu-4, with its diphenylamino donor, achieved an initial PCE of over 6%. This research highlights the crucial role of donor–acceptor interactions in optimizing organic dye design for high-performance QsDSSCs, paving the way for efficient and stable next-generation solar energy technologies.

Keywords: quasi-solid-state electrolytes; organic dyes; phenothiazine; donor–acceptor systems; molecular engineering; device stability (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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