Conjugated linker correlated energetics and kinetics in dithienopyrrole dye-sensitized solar cells
文献类型：期刊论文
| 作者 | Zhang J ; Yao ZY ; Cai YC ; Yang L ; Xu MF ; Li RZ ; Zhang M ; Dong XD ; Wang P |
| 刊名 | energy & environmental science
 |
| 出版日期 | 2013 |
| 卷号 | 6期号:5页码:1604-1614 |
| 关键词 | STRUCTURE-PROPERTY RELATIONSHIPS ELECTRON-TRANSFER DYNAMICS ORGANIC-DYES CHARGE RECOMBINATION NANOCRYSTALLINE TIO2 HIGH-EFFICIENCY PHOTOVOLTAIC PERFORMANCE COUMARIN DYES DESIGN ENERGY |
| ISSN号 | 1754-5692 |
| 通讯作者 | zhang j |
| 中文摘要 | we report two triarylamine-cyanoacrylic acid based push-pull dyes c252 and c253 featuring the pi-conjugated linkers of 2,6-di(thiophen-2-yl)-4h-dithieno[3,2-b:2',3'-d]pyrrole and 4h,4'h-2,2'-bidithieno [3,2-b:2',3'-d] pyrrole, respectively. benefitting from an improved coplanarity of the conjugated units, the c253 dye displays a red-shifted absorption peak and an enhanced maximum molar absorption coefficient in comparison with c252. however, this pattern of conjugated linker alternation is associated with an 80 mv negative shift of the ground-state oxidation potential, which dominates an almost 5 times reduced rate of hole injection from the oxidized state of c253 to the divalent tris(2,2'-bipyridine) cobalt (co-bpy) cation in the redox electrolyte, resulting in a considerably poor net charge separation yield. on the other side, a dye-sensitized solar cell employing the c252 photosensitizer and the co-bpy electrolyte exhibits a good power conversion efficiency of 9.5% measured under the 100 mw cm(-2) simulated am1.5 sunlight. the dissimilarity of cell photovoltage is scrutinized by evaluating the shift of the titania conduction band edge and the variation of interfacial charge recombination kinetics, the latter of which presents a clear correlation with dye coating thickness on titania derived from x-ray photoelectron spectroscopy measurements. our work has underlined the important energetic and kinetic interplays which should be seriously considered in the further optimization of active components in dye-sensitized solar cells. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000317984700027 |
| 公开日期 | 2014-04-15 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/49890]  |
| 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 J,Yao ZY,Cai YC,et al. Conjugated linker correlated energetics and kinetics in dithienopyrrole dye-sensitized solar cells[J]. energy & environmental science,2013,6(5):1604-1614. |
| APA | Zhang J.,Yao ZY.,Cai YC.,Yang L.,Xu MF.,...&Wang P.(2013).Conjugated linker correlated energetics and kinetics in dithienopyrrole dye-sensitized solar cells.energy & environmental science,6(5),1604-1614. |
| MLA | Zhang J,et al."Conjugated linker correlated energetics and kinetics in dithienopyrrole dye-sensitized solar cells".energy & environmental science 6.5(2013):1604-1614. |
入库方式： OAI收割
来源：长春应用化学研究所
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