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Efficiency enhancement in $SnO_{2}$ based dye-sensitized solar cells by incorporating plasmonic gold nanoparticles
| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | K. Umair M. A. K. L. Dissanayake G. K. R. Senadeera |
| Abstract | $SnO_{2}$ is an attractive semiconducting material which can be used in place of $TiO_{2}$ in dye–sensitized solar cells (DSSCs) due to the wide energy band gap, good photostability and high charge carrier mobility. Here we report the use of plasmon resonance effect by gold nanoparticles of size 70–80 nm for efficiency enhancement in solar cells made with $SnO_{2}$ photoanodes and sensitized with Indoline D149 dye. Devices were characterized by current density–voltage (J–V) curves, incident photon–to–electron conversion efficiency (IPCE) spectroscopy and electron impedance spectroscopy (EIS). DSSCs fabricated with pristine $SnO_{2}$ photoanode showed efficiency of (η) 2.28%, under the illumination of 100 mW $cm^{-2}$ (AM 1.5), whereas DSSCs fabricated with optimized Au nanoparticles in $the SnO_{2}$ photoanode showed efficiency of 2.89% having more than 26% enhancement. This increase is mainly attributed to the 42% increase in the short circuit current density from 6.48 mA $cm^{-2}$ to 9.19 mA $cm^{-2}$ caused by the plasmonic effect by Au nanoparticles. The IPCE was also increased due to the use of $Au@SnO_{2}$. According to the EIS analysis, the incorporation of plasmonic Au nanoparticles has led to a 35% decrease in the interfacial charge transfer resistance $(R_{CT2}$) at the $SnO_{2}$ photoanode/electrolyte interface which is associated with the increased rate of charge transfer at this interface and increased resulting the efficiency of the solar cells. |
| Related Links | https://cjs.sljol.info/articles/7923 |
| ISSN | 25132814 |
| DOI | 10.4038/cjs.v50i5.7923 |
| Journal | Ceylon Journal of Science |
| Issue Number | 5 |
| Volume Number | 50 |
| e-ISSN | 2513230X |
| Language | English |
| Publisher | Faculty of Science, University of Peradeniya, Sri Lanka |
| Publisher Date | 2021-01-01 |
| Publisher Place | Sri Lanka |
| Access Restriction | Open |
| Subject Keyword | Science Au Nanoparticles, Indoline D149, Plasmonic Effect, Power Conversion Efficiency, Sno2 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Physics and Astronomy Mathematics Agricultural and Biological Sciences |
