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Effect of titanium oxide compact layer in dye-sensitized solar cell prepared by liquid-phase deposition

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Abstract

In this study, titanium dioxide films were deposited on indium tin oxide glass substrates by liquid-phase deposition (LPD) for application as the compact layer in dye-sensitized solar cells (DSSCs). A deposition solution of ammonium hexafluorotitanate and boric acid was used for TiO2 deposition. Compact layer passivation can improve DSSC performance by decreasing carrier losses from recombination at the ITO/electrolyte interface and improving the electrical contact between the ITO and the TiO2 photo-electrode. The optimum thickness of the compact layer was found to be 48 nm, which resulted in a 50 % increase in the conversion efficiency compared with cells without compact layers. The conversion efficiency can be increased from 3.55 to 5.26 %. Therefore, the LPD-TiO2 compact layer inhibits the dark current and increases the short-circuit current density effectively.

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Acknowledgments

The authors thank the Ministry of Science and Technology of the Republic of China, Taiwan, for financially supporting this research under Contract No. 104-2221-E-212-019.

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Authors and Affiliations

  1. Department of Electrical Engineering, Da-Yeh University, Changhua, 51591, Taiwan, ROC

    Jung-Jie Huang & Shih-Ping Chiu

  2. Department of Mechatronics Engineering, National Changhua University of Education, Changhua, 500, Taiwan, ROC

    Menq-Jion Wu & Chun-Fa Hsu

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  1. Jung-Jie Huang
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  2. Shih-Ping Chiu
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Correspondence to Jung-Jie Huang.

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Huang, JJ., Chiu, SP., Wu, MJ. et al. Effect of titanium oxide compact layer in dye-sensitized solar cell prepared by liquid-phase deposition. Appl. Phys. A 122, 971 (2016). https://doi.org/10.1007/s00339-016-0492-y

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