M. M., Yusoff and Rajan, Jose and Kumar, E. Naveen and Archana, P. S. and Vijila, C. and Ramakrishna, Seeram (2012) High Performance Dye-Sensitized Solar Cells with Record Open Circuit Voltage using Tin Oxide Nanoflowers Developed by Electrospinning. Energy & Environmental Science, 5. pp. 5401-5407. ISSN 1754-5692 (print), 1754-5706 (online). (Published)
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Abstract
Flower shaped nanostructures of an architypical transparent conducting oxide, SnO2, have been synthesized by an electrospinning technique for the first time by precisely controlling the precursor concentration in a polymeric solution. The flowers were made up of nanofibrils of diameter [similar]70–100 nm, which in turn consisted of linear arrays of single crystalline nanoparticles of size 20–30 nm. Mott–Schottkey analysis shows that flowers have an order of magnitude higher electron density compared with the fibers despite their chemical similarity. Dye-sensitized solar cells fabricated using the flowers showed a record open circuit voltage of [similar]700 mV and have one of the highest photoconversion efficiencies so far achieved with SnO2 and the iodide/triiodide electrolyte. The photoaction spectra and impedance spectroscopic measurements show that the flowers are characterized by a higher electron lifetime, owing to their enhanced crystallinity, compared to the conventional fibrous structure.
| Item Type: | Article |
|---|---|
| Additional Information: | IF: 11.653 27 Citations |
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry |
| Faculty/Division: | Faculty of Industrial Sciences And Technology |
| Depositing User: | Prof. Dr. Mashitah Mohd Yusoff |
| Date Deposited: | 18 Mar 2014 05:00 |
| Last Modified: | 27 Jul 2018 03:25 |
| URI: | http://umpir.ump.edu.my/id/eprint/4707 |
| Download Statistic: | View Download Statistics |
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