|
|
| 论文编号: |
122214O120110302 |
| 第一作者所在部门: |
913组 |
| 中文论文题目: |
Photovoltaic performance enhancement of dye-sensitized solar cells by formation of blocking layers via molecular electrostatic effect
|
| 英文论文题目: |
Photovoltaic performance enhancement of dye-sensitized solar cells by formation of blocking layers via molecular electrostatic effect
|
| 论文题目英文: |
|
| 作者: |
景欢旺
|
| 论文出处: |
|
| 刊物名称: |
Electrochimica Acta
|
| 年: |
2012
|
| 卷: |
59 |
| 期: |
1 |
| 页: |
207 |
| 联系作者: |
景欢旺 |
| 收录类别: |
|
| 影响因子: |
3.650
|
| 摘要: |
The improvement in photovoltaic performance of dye-sensitized solar cells was found after aging in the dark and was analyzed by linear sweep voltammetry and electrochemical impedance spectroscopy. The promotion was found to arise from the formation of blocking layers on the surface of nanocrystalline TiO2, resulting most likely from the intermolecular electrostatic action between the 4-tert-butylpyridine and the 1,2-dimethyl-3-propylimidazolium ions. These blocking layers can retard the interfacial reaction of the electron with I3？ ions without deteriorating the rate of regeneration of the oxidized dye molecules. By virtue of the blocking layers, the retarding recombination of electrons with the I3？ ions significantly increased the electron lifetime and enlarged the electron diffusion length, resulting in a higher open-circuit voltage and an improvement in charge collection efficiency, and eventually an enhancement of the energy conversion efficiency. |
| 英文摘要: |
|
| 外单位作者单位: |
|
| 备注: |
|
关闭窗口 |
|
|
|
