کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6457137 1420658 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
TiO2 photoanode surface modification via combined action of samarium and titanium salt in dye-sensitized solar cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
TiO2 photoanode surface modification via combined action of samarium and titanium salt in dye-sensitized solar cells
چکیده انگلیسی


- The TiO2 Photoanodes were treated Sm(NO3)3
- 6H2O and TiCl4 mixture solutions.
- The PCE of DSSCs were increased from 6.91% to 8.23%.
- The enhanced performance is ascribed to the increase of dye loading, the reduce of surface state, density, and the energy barrier created on TiO2 surface.

Mesoporous TiO2 films were modified with Sm(NO3)3·6H2O and TiCl4 mixture solution in dye-sensitized solar cells. Samarium oxide was formed after modification according to UV-vis absorption spectra and X-ray photoelectron spectra (XPS) analyses, and acted as energy barrier on TiO2 surface. The electron recombination reaction with I3− can be suppressed when samples are treated using Sm3+/TiCl4 solutions via electrochemical impedance spectroscopy (EIS) and open circuit voltage decay (OCVD) analyses. With the mesoporous TiO2 film modified by the TiCl4 mixture solution contained 0.07 M samarium trinitrate, the power conversion efficiency of the dye-sensitized solar cell is increased from 6.91% to 8.23%. The enhanced performance is ascribed to the increase of dye loading, the reduce of surface state density, and the energy barrier created on TiO2 surface. It is a effective method to improve the power conversion efficiency without requiring a tedious synthesis pathway.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 165, June 2017, Pages 45-51
نویسندگان
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