Multiple-state interfacial electron injection competes with excited state relaxation and de-excitation to determine external quantum efficiencies of organic dye-sensitized solar cells
文献类型：期刊论文
| 作者 | Zhang, Min ; Yang, Lin ; Yan, Cancan ; Ma,Wentao ; Wang,Peng |
| 刊名 | physical chemistry chemical physics
 |
| 出版日期 | 2014 |
| 卷号 | 16期号:38页码:20578-20585 |
| 关键词 | TRANSIENT ABSORPTION-SPECTROSCOPY NANOCRYSTALLINE THIN-FILMS CHARGE-TRANSFER DYNAMICS POLYPYRIDYL COMPLEXES ENERGY-DISSIPATION TIO2 FEMTOSECOND TITANIA RECOMBINATION SEPARATION |
| 通讯作者 | wang,p |
| 英文摘要 | a comprehensive description of the complicated dynamics of excited state evolution and charge transfer at the photochemical interface in dye-sensitized solar cells is crucial to understand the mechanism of converting solar photons to clean electricity, providing an informative basis for the future development of advanced organic materials. by selecting two triarylamine-based organic donor-acceptor dyes characteristic of the respective benzoic acid and cyanoacrylic acid anchors, in this paper we reveal stepwise excited state relaxations and multiple-state electron injections at a realistic titania/dye/electrolyte interface based upon ultrafast spectroscopic measurements and theoretical simulations. density functional theory (dft) and time-dependent dft calculations show that the optically generated "hot'' excited state of the dye molecules can undergo a significant conformational relaxation via multistage torsional motions, and thereby transform into an equilibrium quinonoid structure characteristic of a more planar conjugated backbone. a set of kinetic parameters derived from the target analysis of femtosecond transient absorption spectra have been utilized to estimate the electron injection yield, which is in good accord with the maximum of external quantum efficiencies. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2015-10-27 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/56262]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Zhang, Min,Yang, Lin,Yan, Cancan,et al. Multiple-state interfacial electron injection competes with excited state relaxation and de-excitation to determine external quantum efficiencies of organic dye-sensitized solar cells[J]. physical chemistry chemical physics,2014,16(38):20578-20585. |
| APA | Zhang, Min,Yang, Lin,Yan, Cancan,Ma,Wentao,&Wang,Peng.(2014).Multiple-state interfacial electron injection competes with excited state relaxation and de-excitation to determine external quantum efficiencies of organic dye-sensitized solar cells.physical chemistry chemical physics,16(38),20578-20585. |
| MLA | Zhang, Min,et al."Multiple-state interfacial electron injection competes with excited state relaxation and de-excitation to determine external quantum efficiencies of organic dye-sensitized solar cells".physical chemistry chemical physics 16.38(2014):20578-20585. |
入库方式： OAI收割
来源：长春应用化学研究所
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