Citation: Zhen LI, An-Chen WANG, Hui-Ming YIN, Da-Peng CAO, Bao-Xiu MI. Two-step electrophoretic deposition of TiO₂ photoanode for highly effective dye-sensitized solar cells[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(12): 2349-2357. doi: 10.11862/CJIC.2023.202 shu

Two-step electrophoretic deposition of TiO₂ photoanode for highly effective dye-sensitized solar cells

State Key Laboratory of Organic Electronics and Information Displays, Nanjing University of Posts & Telecommunications, Nanjing 210023, China

Corresponding author: Da-Peng CAO, iamdpcao@njupt.edu.cn
Received Date: 12 May 2023
Revised Date: 25 October 2023

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In this work, the influences of electrophoretic voltage on film deposition rate, thickness and morphology were investigated. Photoanodes and dye-sensitized solar cells (DSSC) were characterized by step profiler, optical photograph, scanning electron microscope, electrochemical impedance spectroscopy (EIS) and open-circuit voltage decay (OCVD). Increasing electrophoretic voltage can accelerate deposition rate and increase the final film thickness. However, employing excessively high voltage leads to crack formation and incomplete coverage on FTO, thereby exerting an adverse impact on the efficiency of DSSC devices. By employing a "30 V followed by 60 V" deposition method, which combines the advantages of low and high voltages, photoanodes exhibiting a synergistic effect were successfully fabricated. This approach not only reduces electrophoretic time but also yields films of superior quality, resulting in an impressive device efficiency of 7.29% without any additional modifications.
- dye-sensitized solar cell,
- electrophoretic deposition,
- TiO₂,
- photoanode
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沈阳化工大学材料科学与工程学院沈阳 110142

Two-step electrophoretic deposition of TiO2 photoanode for highly effective dye-sensitized solar cells

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通讯作者: 陈斌, bchen63@163.com

Two-step electrophoretic deposition of TiO₂ photoanode for highly effective dye-sensitized solar cells