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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/3371
Title: Enhancing the performance of dye-sensitized solar cells based on an organic dye by incorporating TiO2 nanotube in a TiO2 nanoparticle film
Authors: Lee K.-M.
Suryanarayanan V.
Huang J.-H.
Thomas K.R.J.
Lin J.T.
Ho K.-C.
Published in: Electrochimica Acta
Abstract: The photoelectrochemical properties of a high molar extinction coefficient charge transfer organic dye containing thienylfluorene segment called FL, and the effect of incorporating TiO2 nanotube (TiNT) in TiO2 nanoparticle film along with the above dye on the photovoltaic performance of dye-sensitized solar cells (DSSCs) were investigated. The influence of soaking time of the TiO2 electrode in dye solution and the effect of varying its concentration, on the solar cell efficiency was also studied. Cyclic voltammetric (CV) analysis revealed the linear relationship between the anodic peak current and the scan rate, indicating a surface-confined diffusion process. The surface morphology of TiNT was characterized using SEM, TEM and XRD. The open-circuit voltage (VOC) of the DSSC increased with the increase in the wt% of TiNT and shows optimal value at about 5 wt%, which is correlated with the suppression of the electron recombination as found out from the electron lifetime studies. The electrochemical impedance spectroscopy (EIS) technique was employed to quantify the charge transport resistance (Rct) and electron lifetime under different ratios of the TiNT/nanoparticle. The electron lifetimes of the DSSCs based on FL and N3 dye were very close to one another and the DSSC based on the FL showed respectable photovoltaic performance of ca. 7.8% under the light intensity of 100 mW cm-2 (AM 1.5G). © 2009 Elsevier Ltd. All rights reserved.
Citation: Electrochimica Acta (2009), 54(16): 4123-4130
URI: https://doi.org/10.1016/j.electacta.2009.02.052
http://repository.iitr.ac.in/handle/123456789/3371
Issue Date: 2009
Keywords: Dye-sensitized solar cells
Electron transfer
Organic dye
TiO2 Nanotube
ISSN: 134686
Author Scopus IDs: 7501498671
6601983766
36336922700
57203389297
7501725859
56962715200
Author Affiliations: Lee, K.-M., Photovoltaics Technology Center, Industrial Technology Research Institute, Chutung, Hsinchu 31040, Taiwan
Suryanarayanan, V., Electro Organic Division, Central Electrochemical Research Institute, Karaikudi, 630006 Tamil Nadu, India
Huang, J.-H., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
Thomas, K.R.J., Institute of Chemistry, Academia Sinica, 115 Nankang, Taipei, Taiwan
Lin, J.T., Institute of Chemistry, Academia Sinica, 115 Nankang, Taipei, Taiwan
Ho, K.-C., Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
Funding Details: This work was financially supported by the Academia Sinica, Taipei, Taiwan, the Republic of China, under grant AS-97-TP-A08. We also want to thank Professor King-Chuen Lin and his research group members, of Department of Chemistry, National Taiwan University, for the help in making the pulsed laser apparatus available to us.
Corresponding Author: Lee, K.-M.; Photovoltaics Technology Center, Industrial Technology Research Institute, Chutung, Hsinchu 31040, Taiwan; email: d93549007@ntu.edu.tw
Appears in Collections:Journal Publications [CY]

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