International Journal of

ADVANCED AND APPLIED SCIENCES

EISSN: 2313-3724, Print ISSN: 2313-626X

Frequency: 12
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 Volume 7, Issue 12 (December 2020), Pages: 133-138

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 Original Research Paper

 Title: A comparative study of titanium dioxide preparation methods in solar cells based on the TiO2 semiconducting polymer heterojunction

 Author(s): H. Al-Dmour *

 Affiliation(s):

 Department of Physics, Faculty of Science, Mu'tah University, Mu'tah, Jordan

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 * Corresponding Author. 

  Corresponding author's ORCID profile: https://orcid.org/0000-0001-5680-5703

 Digital Object Identifier: 

 https://doi.org/10.21833/ijaas.2020.12.015

 Abstract:

The influence of the morphology and thickness of titanium dioxide (TiO2) films in solar cells based on dioxide materials-semiconducting polymer was investigated. These parameters can significantly impact the mechanism of charge generation in double-layer solar cells. TiO2 films were deposited on glass surfaces using two different techniques. Atomic force microscopy examination revealed a crystalline structure in the thick TiO2 film produced using the doctor blade technique, whereas an amorphous structure and thin layer were obtained via the spin-coating technique. Under light conditions, the best performance between the two solar cells was obtained with the amorphous TiO2thin film, which displayed a higher short circuit current density and power conversion efficiency (Jsc=1mA/cm2, μ=0.24%) than the nanocrystallineTiO2 solar cell (Jsc=0. 23mA/cm2, μ=0.1%). This is explained by the improved efficiencies of hole-electron pair separation and charge collection through reductions in the resistance across the bulk region and in charge recombination at the interfacial layer in the amorphous solar cell. However, the high rectification ratio and high turn-on voltage under dark conditions, and forward bias current in the nanocrystalline solar cell led to an increase of 0.3 V in the open circuit voltage in comparison with the amorphous device. These results confirm that, for double-layer solar cells, an amorphous thin film performs better than a thick nanocrystalline TiO₂ layer, in contrast to previous observations for dye-sensitized solar cells. 

 © 2020 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords: Solar cell, Morphology, Power conversion efficiency, Charge separation, Rectification ratio

 Article History: Received 29 April 2020, Received in revised form 30 July 2020, Accepted 12 August 2020

 Acknowledgment:

No Acknowledgment.

 Compliance with ethical standards

 Conflict of interest: The authors declare that they have no conflict of interest.

 Citation:

  Al-Dmour H (2020). A comparative study of titanium dioxide preparation methods in solar cells based on the TiO2 semiconducting polymer heterojunction. International Journal of Advanced and Applied Sciences, 7(12): 132-138

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 Figures

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 Tables

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