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Growth of hierarchical TiO2 flower-like microspheres/ oriented nanosheet arrays on titanium mesh for flexible dye-sensitized solar cells

Abstract

A triple-layer TiO2 (TiO2-TL) structure was first synthesized with an over-layer composed of TiO2 flower-like microspheres (MSs), a middle-layer of TiO2 nanosheet arrays (NSAs) and an under-layer of TiO2 compact film (CF) on flexible titanium (Ti) meshes substrate using a one-step hydrothermal route followed by a calcination post-treatment and used to make a series of flexible dye-sensitized solar cells (DSSCs). The dependence of physical features (diameter and length) of this hierarchical TiO2 structure on the NaOH concentration, temperature and hydrothermal duration is systematically studied. The fully flexible DSSCs employing such hierarchically triple-layer TiO2 structure as photoanodes and poly-aniline film (PANI) on the indium doped tin oxide/polyethylene naphthalate (ITO/PEN) substrate as counter electrode exhibited a power conversion efficiency of 5.04%, which mainly benefited from the enhanced capacity of effective light scattering from MSs and fast charge transfer from NSAs.

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Publication details

The article was received on 22 Jun 2018, accepted on 03 Sep 2018 and first published on 04 Sep 2018


Article type: Paper
DOI: 10.1039/C8CE01028E
Citation: CrystEngComm, 2018, Accepted Manuscript
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    Growth of hierarchical TiO2 flower-like microspheres/ oriented nanosheet arrays on titanium mesh for flexible dye-sensitized solar cells

    Y. xu, X. Li, M. Xiao and X. Xiong, CrystEngComm, 2018, Accepted Manuscript , DOI: 10.1039/C8CE01028E

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