Efficient Dye-Sensitized Solar Cells with an Organic Photosensitizer Featuring Orderly Conjugated Ethylenedioxythiophene and Dithienosilole Blocks
文献类型：期刊论文
| 作者 | Zeng, Wangdong1,2; Cao, Yiming1; Bai, Yu1; Wang, Yinghui1; Shi, Yushuai1; Zhang, Min1; Wang, Fangfang1; Pan, Chunyue2; Wang, Peng1 |
| 刊名 | CHEMISTRY OF MATERIALS
 |
| 出版日期 | 2010-03-09 |
| 卷号 | 22期号:5页码:1915-1925 |
| ISSN号 | 0897-4756 |
| DOI | 10.1021/cm9036988 |
| 英文摘要 | In view of the limited ruthenium resource, metal-free organic dyes may play a prominent role in the coming large-scale application of cost-effective dye-sensitized solar cells, if their efficiency and stability can be considerably improved. In this paper we utilized a binay pi-conjugated spacer of ethylenedioxythiophene and dithienosilole to construct a high molar absorption coefficient push-pull dye, characteristic of an intramolecular charge-transfer band peaking at 584 nm measured in chloroform. In comparison with the standard ruthenium sensitizer Z907, this metal-free chromophore C219 endowed a nanocrystalline titania Film with all evident light-harvesting enhancement. leading to an unprecedented 10 0- 10 3% efficiency at the AM 1 5G conditions for dye-sensitized solar cells with nonruthenium dyestuffs, although a highly volatile electrolyte was used. Transient absorption measurements have revealed that even if the kinetics of back-electron transfer and dye regeneration am considerably different for Z907 and C219, the branching ratios of these two charge-transfer channels are over 35 for both dyes, ensuring a high yield of net charge separation at the titania/dye/electrolyte interface. A solvent-free ionic liquid cell with C219 as the sensitizer exhibited an impressive efficiency or 8 9% under a low light intensity of 14.39 mW cm(-2), making it very favorable for the indoor application of flexible dye-sensitized solar cells. |
| 语种 | 英语 |
| WOS记录号 | WOS:000274929000040 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/69059]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Peng |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Changchun 130022, Peoples R China 2.Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zeng, Wangdong,Cao, Yiming,Bai, Yu,et al. Efficient Dye-Sensitized Solar Cells with an Organic Photosensitizer Featuring Orderly Conjugated Ethylenedioxythiophene and Dithienosilole Blocks[J]. CHEMISTRY OF MATERIALS,2010,22(5):1915-1925. |
| APA | Zeng, Wangdong.,Cao, Yiming.,Bai, Yu.,Wang, Yinghui.,Shi, Yushuai.,...&Wang, Peng.(2010).Efficient Dye-Sensitized Solar Cells with an Organic Photosensitizer Featuring Orderly Conjugated Ethylenedioxythiophene and Dithienosilole Blocks.CHEMISTRY OF MATERIALS,22(5),1915-1925. |
| MLA | Zeng, Wangdong,et al."Efficient Dye-Sensitized Solar Cells with an Organic Photosensitizer Featuring Orderly Conjugated Ethylenedioxythiophene and Dithienosilole Blocks".CHEMISTRY OF MATERIALS 22.5(2010):1915-1925. |
入库方式： OAI收割
来源：化学研究所
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