Influence of 4-tert-butylpyridine/guanidinium thiocyanate co-additives on band edge shift and recombination of dye-sensitized solar cells: experimental and theoretical aspects
详细信息 查看全文
- 作者：Yuqiao Wanga ; yqwang@seu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Jing Lua ; Jie Yina ; Gang Lü ; b ; ; Yingmin Cuib ; ganglv@ncepubd.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Shasha Wanga ; Shengyuan Dengc ; Dan Shanc ; Hailiang Taod ; Yueming Suna ; sun@seu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Additive ; Band shift ; Recombination ; Charge transfer ; Theoretical calculation ; Dye-sensitized solar cell
- 刊名：Electrochimica Acta
- 出版年：2015
- 出版时间：10 December 2015
- 年：2015
- 卷：185
- 期：Complete
- 页码：69-75
- 全文大小：2172 K
文摘
- •
The frontier orbitals between 4-tert-butylpyridine and TiO2 are sufficiently overlapped to induce the negative shift of Fermi energy, increasing the open-circuit voltage.
- •
The guanidinium cations can be tightly absorbed on TiO2 surface by electrostatic attraction to form a passivated layer, depressing the recombination rate and improving the short-circuit photocurrent.
- •
The photovoltaic performance might be as a result of a synergistic effect of co-additives due to the competitive effect between volume and electrostatic effect.