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Improved efficiency in front-side illuminated dye sensitized solar cells based on free-standing one-dimensional TiO2 nanotube array electrodes

Peighambardoust, N. S ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.solener.2019.03.073
  3. Publisher: Elsevier Ltd , 2019
  4. Abstract:
  5. Although morphological disorder of nanotube structure is further down than the nanoparticular electrode, its density of traps are the hindering effects in the charge transport. In this study, crack-free TiO2 nanotube membranes, which obtained through a re-anodizing process, are fixed on transparent fluorine–tin-oxide glass by applying a few drops of Titanium Isopropoxide without needing the TiO2 powder paste. Front-side illuminated dye sensitized solar cells fabricated by undoped, N-doped and blue TiO2 nanotube membranes are investigated. The electrical characteristics of TiO2 nanotube based dye sensitized solar cells are followed by theoretical analysis using simple one-diode model. Morphology improvement is utilized to remove top irregular layers and the efficiency can be increased up to 56%. Annealing temperature, dopant, and tube orientation effects are examined on the cell efficiencies. The results show that elevating annealing temperature from 480 to 520 °C improve the cell efficiency up to 70%. Also, in the N-doped TiO2 nanotube membranes, improvement in efficiency is observed up to 40% as compared to undoped samples. Finally, different orientations of N-doped TiO2 nanotubes are studied and it is found that the through-hole morphology of N-doped TiO2 nanotube membrane shows noteworthy enhancement and an efficiency of about 8%
  6. Keywords:
  7. Blue TiO2 nanotube ; Dye sensitized solar cell ; EIS ; Front-side illumination ; N-doped TiO2 nanotube ; One-diode model ; Diodes ; Doping (additives) ; Dye-sensitized solar cells ; Efficiency ; Electrodes ; Morphology ; Nanotubes ; Solar cells ; Tin oxides ; Titanium dioxide ; Titanium oxides ; Yarn ; Annealing temperatures ; Diode modeling ; Electrical characteristic ; Nanotube structure ; Orientation effect ; TiO2 nanotube arrays ; TiO2 nanotubes ; Titanium Isopropoxide ; Nitrogen compounds ; Energy efficiency ; Fuel cell ; Qlass ; Nanotube ; Solar power ; Technical efficiency ; Titanium
  8. Source: Solar Energy ; Volume 184 , 2019 , Pages 115-126 ; 0038092X (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0038092X19303020#!