Li+ doped anodic TiO2 nanotubes for enhanced efficiency of Dye-sensitized solar cells

Cha G, Özkan S, Hwang I, Mazare AV, Schmuki P (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Surface Science Elsevier

Book Volume: 718

Article Number: 122012

DOI: 10.1016/j.susc.2021.122012

Abstract

The insertion of cations such as H⁺ and Li⁺ to TiO2 photoelectrodes is a universally recognized method to enhance the electric conductivity of TiO2 electrodes. In the present work we report on the fabrication and use of Li⁺ inserted TiO2 nanotubes (NTs) as a photoanode scaffold in dye-sensitized solar cells (DSSCs). Li⁺ was successfully inserted into the TiO2 NTs by a cathodic treatment in 1 M LiClO4/ethylene carbonate (EC) electrolyte. We observe for DSSCs fabricated from such nanotubes an overall solar cell efficiency of ∼7.1% compared to an efficiency of ∼5.7% for the non Li-intercalated electrode. We ascribe this enhancement to a faster electron transport and an increased conductivity in the lithiated TiO2 NTs.

Authors with CRIS profile

Gi Cha Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO) Selda Özkan Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO) Imgon Hwang Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO) Anca Valentina Mazare Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO) Patrik Schmuki Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO)

How to cite

APA:

Cha, G., Özkan, S., Hwang, I., Mazare, A.V., & Schmuki, P. (2022). Li+ doped anodic TiO2 nanotubes for enhanced efficiency of Dye-sensitized solar cells. Surface Science, 718. https://doi.org/10.1016/j.susc.2021.122012

MLA:

Cha, Gi, et al. "Li+ doped anodic TiO2 nanotubes for enhanced efficiency of Dye-sensitized solar cells." Surface Science 718 (2022).

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