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Incorporation of Potassium Water Glass on Photoelectrodes and Its Effects on the Performance of Dye-Sensitized Solar Cells
- Incorporation of Potassium Water Glass on Photoelectrodes and Its Effects on the Performance of Dye-Sensitized Solar Cells
- Oh, JH[Oh, Ju Hee]; Lee, SJ[Lee, Sang-Ju]; Kim, DH[Kim, Dae-Hwan]; Sung, SJ[Sung, Shi-Joon]; Kang, CS[Kang, Cheon Su]; Han, YS[Han, Yoon Soo]
- DGIST Authors
- Oh, JH[Oh, Ju Hee]; Lee, SJ[Lee, Sang-Ju]; Kim, DH[Kim, Dae-Hwan]
- Issue Date
- Journal of Nanoscience and Nanotechnology, 15(11), 8854-8858
- Article Type
- Charge Recombinations; Dye-Sensitized Solar Cells (DSCs); Electro-Chemical Impedance Spectroscopy (EIS); Electrodes; Glass; Open Circuit Voltage; Open Circuit Voltage Decays; Photo-Electrode; Photovoltaic Effects; Photovoltaic Property; Potassium Water Glass; Power Conversion Efficiencies; Short-Circuit Photocurrent; Solar Cells; Solar Power Generation; Surface Modifier; Surface Modifiers; Surface Treatment; Titanium Dioxide; Water Glass
- We applied potassium water glass (PWG) for a modification of photoelectrodes and investigated the effects of this modification on the photovoltaic properties of dye-sensitized solar cells (DSSCs). The PWG-modified TiO2 electrodes were prepared by soaking the TiO2 films in an aqueous PWG solution, and the resulting electrodes were applied to the photoanodes of DSSCs. Compared with a reference device with pristine TiO2 electrode, the power conversion efficiency of a DSSC with a PWG-modified TiO2 electrode was improved by about 26% because of the enhanced shortcircuit photocurrent (Jsc) and open-circuit voltage (Voc). Open-circuit voltage decay, electrochemical impedance spectroscopy, and dark current measurements revealed that the incorporation of PWG on the TiO2 surface led to a longer electron lifetime because of the suppression of charge recombination between injected electrons and I- 3 ions, which, compared with a reference device without surface modification, resulted in an increase in both Jsc and Voc. Copyright © 2015 American Scientific Publishers All rights reserved.
- American Scientific Publishers
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- Convergence Research Center for Solar Energy1. Journal Articles
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