Controlling Interfacial Recombination in Aqueous Dye-Sensitized Solar Cells by Octadecyltrichlorosilane Surface Treatment
| Autor: | Leone Spiccia, Wanchun Xiang, Wenchao Huang, Yi-Bing Cheng, Xin Li, Udo Bach, Fuzhi Huang, Dongchuan Fu, Cunku Dong |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Aqueous solution Materials science Inorganic chemistry chemistry.chemical_element General Medicine General Chemistry Silane Octadecyltrichlorosilane Catalysis Barrier layer Dye-sensitized solar cell chemistry.chemical_compound chemistry Chemical engineering Surface modification Cobalt Alkyl |
| Zdroj: | Angewandte Chemie International Edition. 53:6933-6937 |
| ISSN: | 1433-7851 |
| DOI: | 10.1002/anie.201400723 |
| Popis: | A general and convenient strategy is proposed for enhancing photovoltaic performance of aqueous dye-sensitized solar cells (DSCs) through the surface modification of titania using an organic alkyl silane. Introduction of octadecyltrichlorosilane on the surface of dyed titania photoanode as an organic barrier layer leads to the efficient suppression of electron recombination with oxidized cobalt species by restricting access of the cobalt redox couple to the titania surface. The champion ODTS-treated aqueous DSCs (0.25 mM ODTS in hexane for 5 min) exhibit a V(oc) of 821±4 mV and J(sc) of 10.17±0.21 mA cm(-2), yielding a record PCE of 5.64±0.10%. This surface treatment thus serves as a promising post-dye strategy for improving the photovoltaic performance of other aqueous DSCs. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text