Positional isomers of pyridine linked triphenylamine-based donor-acceptor organic dyes for efficient dye-sensitized solar cells
| Autor: | Rajneesh Misra, Deepali Arora, Abhishek Sharma, Ganesh D. Sharma, Ramesh Maragani |
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| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Electron lifetime Process Chemistry and Technology General Chemical Engineering Energy conversion efficiency Inorganic chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Triphenylamine 01 natural sciences Electron transport chain 0104 chemical sciences chemistry.chemical_compound Dye-sensitized solar cell Pyridine Structural isomer 0210 nano-technology Short circuit |
| Zdroj: | Dyes and Pigments. 126:38-45 |
| ISSN: | 0143-7208 |
| DOI: | 10.1016/j.dyepig.2015.11.008 |
| Popis: | Two donor-acceptor (D-A) metal free dyes 3-{4-[Bis-(4-pyridin-2-ylethynyl-phenyl)-amino]-phenyl}-2-cyano-acrylic acid (D1) and 3-{4-[Bis-(4-pyridin-3-ylethynyl-phenyl)-amino]-phenyl}-2-cyano-acrylic acid (D2) have been designed, synthesized and used as sensitizers for the dye sensitized solar cells (DSSCs). The DSSCs based on D1 and D2 exhibit the power conversion efficiency (PCE) of 5.16% and 4.27%, respectively. The higher PCE value of D1 based DSSC is attributed to its enhanced short circuit current (Jsc) and open-circuit voltage (Voc) and fill factor (FF) values. The electrochemical impedance spectra demonstrated shorter electron transport time, longer electron lifetime and high charge recombination resistance for DSSC based on D1, as well as larger dye loading onto TiO2 are attributed to the higher PCE. |
| Databáze: | OpenAIRE |
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