NDLI: Photovoltaic and spectroscopic characteristics of perovskite/TiO2 heterostructure photoanodes for improving the efficiency of dye sensitized solar cells.

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Photovoltaic and spectroscopic characteristics of perovskite/TiO2 heterostructure photoanodes for improving the efficiency of dye sensitized solar cells.

Content Provider	Semantic Scholar
Author	Hafez, Hoda Kamal, R.
Copyright Year	2019
Abstract	Perovskite-type ternary oxide nanostructured materials have gained great attention in recent years as promising materials for solar cell applications. However these ternary oxides have failed to be applied as a working electrode in DSSCs due to its poor performance and its inability to bind dye molecules to the surface. A heterostructure perovskite/TiO2 photoactive electrodes is a new strategy to improve the photon-to-current efficiency (PCE) of DSSCs. In this paper, BaZrO3 (BZ), BaTiO3 (BT) and nanocomposite [1:1] molar% from BaTiO3-BaZrO3 perovskite nanostructured materials synthesized via sonochemical sol-gel methods, are coated on the top of the TiO2 photoactive electrode. This heterostructured (perovskite/TiO2) photoelectrode has been applied for improving the performance of dye-sensitized solar cells (DSSCs). The crystallographic, morphological and optical characteristics of the different prepared perovskite nanomaterials has been investigated by XRD, SEM, TEM, Raman and UV-Vis Diffuse reflectance spectroscopic analysis, respectively. Dye-sensitized solar cells based on the different heterostructure perovskite/TiO2 electrodes are assembled, and high conversion efficiency (η) are calculated from the current density-voltage (J-V) characteristics of the solar cells. The results show an efficiency enhancement with about ∼22%, 37% and 51% in case of BZ, BTZ and BT respectively. These enhancements is attributed to high refractive index of the perovskite nanoparticles, higher incident photon-to-current conversion yield which is due to greater fraction of light scattered, as well as the less recombination of the photogenerated electrons.
Starting Page	117220
Ending Page	117220
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1016/j.saa.2019.117220
PubMed reference number	31226614
Journal	Medline
Volume Number	222
Alternate Webpage(s)	http://staff.usc.edu.eg/uploads/e20adf03e316191621bf2e7eb01fecd8.pdf
Alternate Webpage(s)	https://doi.org/10.1016/j.saa.2019.117220
Journal	Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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