| Autor: |
Zhao-Qian, Li, Ya-Ping, Que, Li-E, Mo, Wang-Chao, Chen, Yong, Ding, Yan-Mei, Ma, Ling, Jiang, Lin-Hua, Hu, Song-Yuan, Dai |
| Rok vydání: |
2015 |
| Zdroj: |
ACS applied materialsinterfaces. 7(20) |
| ISSN: |
1944-8252 |
| Popis: |
TiO2 microspheres are of great interest for a great deal of applications, especially in the solar cell field. Because of their unique microstructure and light-scattering effect, TiO2 microsphere-based solar cells often exhibit superior photovoltaic performance. Hence, exploring new suitable TiO2 microspheres for high-efficiency solar cells is essential. In this work, we demonstrate a facile one-pot solvothermal approach for synthesis of TiO2 microspheres using acetone as solvent. The as-prepared TiO2 microspheres are composed of densely interconnected nanocrystals and possess a high specific surface area up to 138.47 m(2) g(-1). As the photoanode, the TiO2 microsphere-based DSSC gives higher dye loading and light adsorption ability as well as longer electron lifetime, resulting in higher short-circuit current value and superior power conversion efficiency (PCE) compared with Dyesol 18 nm TiO2 nanoparticle paste. Finally, the TiO2 microsphere-based DSSC were optimized by adding a TiO2 nanocrystal underlayer and TiCl4 post-treatment, giving a high PCE of 10.32%. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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