Qamar, Wali and Azhar, Fakharuddin and Yasin, Amina and Mohd Hasbi, Ab. Rahim and Jamil, Ismail and Rajan, Jose (2015) One Pot Synthesis of Multi-functional Tin Oxide Nanostructures for High Efficiency Dye-sensitized Solar Cells. Journal of Alloys and Compounds, 646. pp. 32-39. ISSN 0925-8388 (print), 1873-4669 (online). (Published)
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Abstract
Photoanode plays a key role in dye sensitized solar cells (DSSCs) as a scaffold for dye molecules, transport medium for photogenerated electrons, and scatters light for improved absorption. Herein, tin oxide nanostructures unifying the above three characteristics were optimized by a hydrothermal process and used as photoanode in DSSCs. The optimized morphology is a combination of hollow porous nanoparticles of size ∼50 nm and micron sized spheres with BET surface area (up to 29 m2/g) to allow large dye-loading and light scattering as well as high crystallinity to support efficient charge transport. The optimized morphology gave the highest photovoltaic conversion efficiency (∼7.5%), so far achieved in DSSCs with high open circuit voltage (∼700 mV) and short circuit current density (∼21 mA/cm2) employing conventional N3 dye and iodide/triiodide electrolyte. The best performing device achieved an incident photon to current conversion efficiency of ∼90%. The performance of the optimized tin oxide nanostructures was comparable to that of conventional titanium based DSSCs fabricated at similar conditions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Photovoltaic; UV–VIS spectroscopy measurements; TiO2–SnO2 composite structure; Electron life time and recombination |
| Subjects: | Q Science > Q Science (General) |
| Faculty/Division: | Faculty of Industrial Sciences And Technology Institute of Postgraduate Studies |
| Depositing User: | Mrs. Neng Sury Sulaiman |
| Date Deposited: | 24 Jun 2015 06:25 |
| Last Modified: | 28 Aug 2019 03:11 |
| URI: | http://umpir.ump.edu.my/id/eprint/9337 |
| Download Statistic: | View Download Statistics |
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