Electron transport properties of TiO2 shell on Al2O3 core in dye-sensitized solar cells

doi:10.1088/1674-1056/27/1/017804

Abstract The performance of dye-sensitized solar cells (DSSCs) is strongly affected by the properties of semiconductor nanoparticles. In this work, we used TiO₂ particles prepared by TiCl₄ hydrolysis n times on Al₂O₃ films (A/T(n)), and investigated morphology, photoelectric, and electron transport properties of A/T(n). The TiO₂ shell was composed of 10-20 nm nanoparticles and the number of nanoparticles increased with increasing TiCl₄ treatment times. The highest photoelectric conversion efficiency of 3.23% was obtained as A/T(4). IMPS results indicated that electron transport rate was high enough to conduct current, and was not the dominating effect to limit the J_sc. J_sc was mainly determined by dye loading on TiO₂ and the interconnection of TiO₂. These may provide a new strategy for preparing semiconductor working electrodes for DSSC.

Keywords: dye-sensitized solar cell electron transportation core-shell structure intensity-modulated photocurrent spectroscopy

Received: 30 September 2017
Revised: 13 November 2017
Accepted manuscript online:

PACS:	78.55.Mb	(Porous materials)
	72.20.Jv	(Charge carriers: generation, recombination, lifetime, and trapping)
	84.60.Jt	(Photoelectric conversion)
	88.40.H-	(Solar cells (photovoltaics))

Fund: Project supported by the National Materials Genome Project of China (Grant No. 2016YFB0700600) and the National Natural Science Foundation of China (Grant No. 51673204).

Corresponding Authors: Yuan Lin
E-mail: linyuan@iccas.ac.cn

Cite this article:

Dongmei Xie(解东梅), Xiaowen Tang(唐小文), Yuan Lin(林原), Pin Ma(马品), Xiaowen Zhou(周晓文) Electron transport properties of TiO₂ shell on Al₂O₃ core in dye-sensitized solar cells 2018 Chin. Phys. B 27 017804

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Electron transport properties of TiO2 shell on Al2O3 core in dye-sensitized solar cells

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Electron transport properties of TiO₂ shell on Al₂O₃ core in dye-sensitized solar cells