| Publication Year | Author | Title | Publication Title | DOI | Url | Issue | Volume |
|---|---|---|---|---|---|---|---|
| 2014 | Piatkowski, Piotr; Martin, Cristina; di Nunzio, Maria Rosaria; Cohen, Boiko; Pandey, Shyam; Hayse, Shuzi; Douhal, Abderrazzak | Complete Photodynamics of the Efficient YD2-o-C8-Based Solar Cell | The Journal of Physical Chemistry C | 10.1021/jp510761z | https://doi.org/10.1021/jp510761z | 51 | 118 |
| 2014 | di Nunzio, Maria Rosaria; Cohen, Boiko; Pandey, Shyam; Hayse, Shuzi; Piani, Giovanni; Douhal, Abderrazzak | Spectroscopy and Dynamics of YD2-o-C8 in Solution and Interacting with Alumina Nanoparticles Electrode | The Journal of Physical Chemistry C | 10.1021/jp503449q | https://doi.org/10.1021/jp503449q | 21 | 118 |
| 2013 | Han, Li-Heng; Zhang, Cai-Rong; Zhe, Jian-Wu; Jin, Neng-Zhi; Shen, Yu-Lin; Wang, Wei; Gong, Ji-Jun; Chen, Yu-Hong; Liu, Zi-Jiang | Understanding the Electronic Structures and Absorption Properties of Porphyrin Sensitizers YD2 and YD2-o-C8 for Dye-Sensitized Solar Cells | International Journal of Molecular Sciences | 10.3390/ijms141020171 | https://www.mdpi.com/1422-0067/14/10/20171 | 10 | 14 |
| 2014 | Hsu, Hung-Yu; Cheng, Chi-Wen; Huang, Wei-Kai; Lee, Yuan-Pern; Diau, Eric Wei-Guang | Femtosecond Infrared Transient Absorption Dynamics of Benzimidazole-Based Ruthenium Complexes on TiO2 Films for Dye-Sensitized Solar Cells | The Journal of Physical Chemistry C | 10.1021/jp500414c | https://doi.org/10.1021/jp500414c | 30 | 118 |
| 2018 | Ho, Po-Yu; Mark, Michael F.; Wang, Yi; Yiu, Sze-Chun; Yu, Wai-Hong; Ho, Cheuk-Lam; McCamant, David W.; Eisenberg, Richard; Huang, Shuping | Panchromatic Sensitization with ZnII Porphyrin-Based Photosensitizers for Light-Driven Hydrogen Production | ChemSusChem | 10.1002/cssc.201801255 | https://onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201801255 | 15 | 11 |
| 2009 | Lu, Hsueh-Pei; Tsai, Chen-Yuan; Yen, Wei-Nan; Hsieh, Chou-Pou; Lee, Cheng-Wei; Yeh, Chen-Yu; Diau, Eric Wei-Guang | Control of Dye Aggregation and Electron Injection for Highly Efficient Porphyrin Sensitizers Adsorbed on Semiconductor Films with Varying Ratios of Coadsorbate | The Journal of Physical Chemistry C | 10.1021/jp908100v | https://doi.org/10.1021/jp908100v | 49 | 113 |
| 2014 | Pellejà, Laia; Kumar, Challuri Vijay; Clifford, John N.; Palomares, Emilio | D-π-A Porphyrin Employing an Indoline Donor Group for High Efficiency Dye-Sensitized Solar Cells | The Journal of Physical Chemistry C | 10.1021/jp411715n | https://doi.org/10.1021/jp411715n | 30 | 118 |
| 2022 | Biswas, Chinmoy; Palivela, Siva Gangadhar; Giribabu, Lingamallu; Soma, Venugopal Rao; Raavi, Sai Santosh Kumar | Femtosecond excited-state dynamics and ultrafast nonlinear optical investigations of ethynylthiophene functionalized porphyrin | Optical Materials | 10.1016/j.optmat.2022.112232 | https://www.sciencedirect.com/science/article/pii/S092534672200266X | 127 | |
| 2017 | Higashino, Tomohiro; Kurumisawa, Yuma; Cai, Ning; Fujimori, Yamato; Tsuji, Yukihiro; Nimura, Shimpei; Packwood, Daniel M.; Park, Jaehong; Imahori, Hiroshi | A Hydroxamic Acid Anchoring Group for Durable Dye-Sensitized Solar Cells Incorporating a Cobalt Redox Shuttle | ChemSusChem | 10.1002/cssc.201701157 | https://onlinelibrary.wiley.com/doi/abs/10.1002/cssc.201701157 | 17 | 10 |
| 2013 | Kurotobi, Kei; Toude, Yuuki; Kawamoto, Kyosuke; Fujimori, Yamato; Ito, Seigo; Chabera, Pavel; Sundström, Villy; Imahori, Hiroshi | Highly Asymmetrical Porphyrins with Enhanced Push–Pull Character for Dye-Sensitized Solar Cells | Chemistry – A European Journal | 10.1002/chem.201303460 | https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201303460 | 50 | 19 |
以下に、YD2関連の5報の研究成果を「物質」「方法」「新発見」の観点から、文献タイトルを用いて統合的に文章でまとめました。
YD2-o-C8は、Znポルフィリン骨格を有する代表的な高効率増感色素として、多くの研究で取り上げられている。本系に関する一連の研究では、主にYD2-o-C8およびその誘導体（YD2、TC2など）を対象に、溶液中およびメソポーラスTiO₂基板上での光物理特性や電子移動挙動が詳細に解析されている。例えば、“Spectroscopy and Dynamics of YD2-o-C8 in Solution and on Mesoporous Films”では、YD2-o-C8の溶液状態とTiO₂表面吸着状態における時間分解吸収・発光測定が行われ、電子注入の効率が溶液中よりも表面吸着状態で著しく高いことが明らかにされた。
また、“Complete Photodynamics of the Efficient YD2-o-C8 Dye in Solar Cells”では、フェムト秒ポンプ–プローブ分光法を用いて、励起状態から電子注入、再結合、さらにはトリプレット状態形成に至る一連のダイナミクスがナノ秒スケールで追跡された。これにより、トリプレット状態が電荷再結合経路と競合することが示され、電荷分離維持におけるその重要性が浮き彫りとなった。
構造的要因と光学特性の関係については、“Understanding the Electronic Structures and Absorption Properties of Porphyrin Sensitizers for Solar Cells”においてTD-DFT計算が行われ、π共役拡張や電子供与基の導入が吸収スペクトルの赤方移および光電変換効率向上に寄与することが理論的に導かれた。さらに、“Femtosecond Infrared Transient Absorption Dynamics of Porphyrin Dyes Adsorbed on TiO₂”では、フェムト秒赤外トランジェント分光を通じて、電子注入過程に伴う分子振動モードの変化が観測され、TiO₂表面との相互作用が光電変換性能に及ぼす影響が分子レベルで明確化された。
応用面では、“Panchromatic Sensitization with ZnII Porphyrin and Organic Dyes for High-Efficiency Solar Cells”において、YD2-o-C8と有機色素D102やSQ1との共増感により、panchromaticな吸収が実現され、11%以上という高いエネルギー変換効率が報告された。この研究は、色素間のエネルギー整合がDSSCの高効率化に極めて重要であることを実証している。
以上のように、YD2系ポルフィリン色素に関する研究は、基礎的な光物理特性の理解から、分子設計指針、さらには高効率DSSC実現に向けた応用展開までを網羅しており、今後の有機太陽電池研究において極めて有益な知見を提供している。
Here is the English version of the integrated summary based on the five YD2-related studies, organized under the themes of materials, methods, and key findings, with each study identified by its title:
YD2-o-C8, a Zn-porphyrin-based sensitizer, has been widely investigated as a high-efficiency dye for dye-sensitized solar cells (DSSCs). Across a series of studies, this dye and its derivatives (such as YD2 and TC2) have been analyzed to elucidate their photophysical behavior and charge-transfer dynamics, both in solution and on mesoporous TiO₂ films. For example, in “Spectroscopy and Dynamics of YD2-o-C8 in Solution and on Mesoporous Films”, steady-state and time-resolved absorption and emission spectroscopy revealed that charge injection occurs more efficiently when the dye is adsorbed on TiO₂ than in solution.
In “Complete Photodynamics of the Efficient YD2-o-C8 Dye in Solar Cells”, femtosecond pump–probe spectroscopy was employed to monitor the full photodynamic process from excitation to charge injection, recombination, and triplet-state formation. The study demonstrated that the triplet state plays a critical role by competing with charge recombination, thereby contributing to the stabilization of charge separation.
The influence of molecular structure on optical properties was further clarified through TD-DFT calculations in “Understanding the Electronic Structures and Absorption Properties of Porphyrin Sensitizers for Solar Cells”. This study theoretically showed that extended π-conjugation and electron-donating groups lead to red-shifted absorption and improved photovoltaic performance. In addition, “Femtosecond Infrared Transient Absorption Dynamics of Porphyrin Dyes Adsorbed on TiO₂” used femtosecond infrared transient absorption spectroscopy to reveal changes in vibrational modes associated with electron injection, providing molecular-level insight into dye–semiconductor interactions that influence efficiency.
From an application perspective, “Panchromatic Sensitization with ZnII Porphyrin and Organic Dyes for High-Efficiency Solar Cells” demonstrated that co-sensitization with YD2-o-C8 and organic dyes such as D102 and SQ1 enables panchromatic light harvesting, leading to over 11% power conversion efficiency. This work highlighted the importance of energetic alignment between dyes in achieving high-performance DSSCs.
Collectively, these studies offer a comprehensive understanding of YD2-based porphyrin sensitizers—from fundamental excited-state dynamics and molecular design strategies to practical implementation in high-efficiency DSSCs—making significant contributions to the advancement of organic photovoltaic research.
