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Issue 94, 2015

Synergistic strategies for the preparation of highly efficient dye-sensitized solar cells on plastic substrates: combination of chemical and physical sintering

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Abstract

Preparation of well-interconnected TiO2 electrodes at low temperature is critical for the fabrication of highly efficient dye-sensitized solar cells (DSCs) on plastic substrates. Herein we explore a synergistic approach using a combination of chemical and physical sintering. We formulate a binder-free TiO2 paste based on “nanoglue” as the chemical sintering agent, and use it to construct a photoelectrode on plastic by low-temperature physical compression to further improve the connectivity of TiO2 films. We systematically investigated the factors affecting the photovoltaic performance and found the conditions to achieve electron diffusion lengths as long as 25 μm and charge collection efficiencies as high as 95%, as electrochemical impedance spectroscopy measurements indicate. We apply this approach to obtain a DSC deposited on plastic displaying 6.4% power conversion efficiency based on commercial P25 titania particles.

Graphical abstract: Synergistic strategies for the preparation of highly efficient dye-sensitized solar cells on plastic substrates: combination of chemical and physical sintering

Supplementary files

Article information


Submitted
31 May 2015
Accepted
03 Sep 2015
First published
03 Sep 2015

This article is Open Access

RSC Adv., 2015,5, 76795-76803
Article type
Paper
Author version available

Synergistic strategies for the preparation of highly efficient dye-sensitized solar cells on plastic substrates: combination of chemical and physical sintering

Y. Li, K. Yoo, D. Lee, J. Y. Kim, H. J. Son, J. H. Kim, C. Lee, H. Míguez and M. J. Ko, RSC Adv., 2015, 5, 76795 DOI: 10.1039/C5RA10290A

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