Dye-Sensitized Solar Cells Using Aluminum-Doped Zinc Oxide/Titanium Dioxide Photoanodes in Parallel

Jung-Chuan Chou, Cheng-Chu Ko, Jun-Xiang Chang, Chih-Hsien Lai, Yu-Hsun Nien, Po-Yu Kuo, Huang-Hua Chen, Hui-Hsuan Hsu and Geng-Ming Hu
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Jung-Chuan Chou: Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Cheng-Chu Ko: Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Jun-Xiang Chang: Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Chih-Hsien Lai: Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Yu-Hsun Nien: Graduate School of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Po-Yu Kuo: Graduate School of Electronic Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Huang-Hua Chen: Graduate School of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Hui-Hsuan Hsu: Graduate School of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan
Geng-Ming Hu: Graduate School of Chemical and Materials Engineering, National Yunlin University of Science and Technology, Douliu 64002, Taiwan

Energies, 2019, vol. 12, issue 18, 1-13

Abstract: In this study, both zinc oxide (ZnO) nanorods and aluminum-doped zinc oxide (AZO) nanosheets were deposited by hydrothermal growth on fluorine-doped tin oxide (FTO) glass. After a photoanode was added to ZnO nanorods or AZO nanosheets, the photovoltaic conversion efficiency (PCE) increased due to improved electron transport and enhanced dye absorption. The improvement in electron transport was verified by electrochemical impedance spectroscopy (EIS), and the increase in dye absorption was verified by ultraviolet-visible spectroscopy. Both of these factors facilitated an increase in PCE. Parameters for dye-sensitized solar cells (DSSCs) using ZnO nanorods/TiO 2 and AZO nanosheets/TiO 2 photoanodes were tested and the results were recorded using EIS. The results indicated that the addition of the ZnO nanorods increased the short-circuit current density ( J sc ) from 9.07 mA/cm 2 to 10.91 mA/cm 2 , the open circuit voltage ( V oc ) from 0.68 V to 0.70 V, and the PCE from 3.70% to 4.73%, respectively. When the DSSCs were produced in a parallel silver-grid device, the results showed that PCE could be increased from 3.67% to 4.04% due to the reduction in connection resistance.

Keywords: dye-sensitized solar cells (DSSCs); aluminum-doped zinc oxide (AZO); titanium dioxide (TiO 2 ); parallel connection (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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