Rigidifying the pi-Linker to Enhance Light Absorption of Organic Dye-Sensitized Solar Cells and Influences on Charge Transfer Dynamics
文献类型：期刊论文
| 作者 | Yao, Zhaoyang1,3; Yang, Lin1,3; Cai, Yanchun1; Yan, Cancan1,3; Zhang, Min1; Cai, Ning1,3; Dong, Xiandui2; Wang, Peng1 |
| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
 |
| 出版日期 | 2014-02-13 |
| 卷号 | 118期号:6页码:2977-2986 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/jp412070p |
| 英文摘要 | The usage of coplanar it-conjugated segments represents a feasible strategy on reducing the energy gap of organic push pull dyes for mesoscopic titania solar cells. In this paper, we report two new dyes coded as C254 and C255 with the respective 1,4-di(thiophen-2-yl)benzene and indacenodithiophene pi-linkers, in combination with the electron-releasing triphenylamine and electron-withdrawing cyanoacrylic acid units. The energy-gap reduction stemming from the rigidity of the g-linker is accompanied by a negative shift of the ground-state redox potential, which however does not affect the yield of hole injection from the oxidized state of dye molecules to a cobalt redox electrolyte. On the other side, we have identified from femtosecond transient absorption measurements a diminished rate of electron injection from the relaxed, low-energy excited state of C255 to titania, albeit a comparable rate of electron injection from the high-energy excited states of these two dyes. The bulkier C255 dye with four hexyl side chains tethered on the two sp(3) carbons of the fused indacenodithiophene unit can form a more compact self-assembling monolayer on titania, considerably attenuating the charge recombination of photoinjected electrons in titania with the cobalt electrolyte and thus enhancing the cell photovoltage and efficiency. |
| 语种 | 英语 |
| WOS记录号 | WOS:000331493400009 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51049]  |
| 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, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Electroanalyt Chem, Changchun 130022, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Zhaoyang,Yang, Lin,Cai, Yanchun,et al. Rigidifying the pi-Linker to Enhance Light Absorption of Organic Dye-Sensitized Solar Cells and Influences on Charge Transfer Dynamics[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(6):2977-2986. |
| APA | Yao, Zhaoyang.,Yang, Lin.,Cai, Yanchun.,Yan, Cancan.,Zhang, Min.,...&Wang, Peng.(2014).Rigidifying the pi-Linker to Enhance Light Absorption of Organic Dye-Sensitized Solar Cells and Influences on Charge Transfer Dynamics.JOURNAL OF PHYSICAL CHEMISTRY C,118(6),2977-2986. |
| MLA | Yao, Zhaoyang,et al."Rigidifying the pi-Linker to Enhance Light Absorption of Organic Dye-Sensitized Solar Cells and Influences on Charge Transfer Dynamics".JOURNAL OF PHYSICAL CHEMISTRY C 118.6(2014):2977-2986. |
入库方式： OAI收割
来源：化学研究所
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