Enhancement of the Photovoltaic Performance of Dye-Sensitized Solar Cells by Cosensitizing TiO2 Photoanode with Uncapped PbS Nanocrystals and Ruthenizer

Umer Mehmood; Amir Al-Ahmed; Mohammad Afzaal; Abbas S. Hakeem; Samsuddeen Abdullahi Haladu; Fahad A. Al-Sulaiman

doi:10.1109/JPHOTOV.2018.2790699

Enhancement of the Photovoltaic Performance of Dye-Sensitized Solar Cells by Cosensitizing TiO₂ Photoanode with Uncapped PbS Nanocrystals and Ruthenizer

Umer Mehmood, Amir Al-Ahmed^*, Mohammad Afzaal, Abbas S. Hakeem, Samsuddeen Abdullahi Haladu, Fahad A. Al-Sulaiman

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

Spray coating of a lead xanthate precursor on titanium dioxide surfaces has been carried out to deposit uncapped lead sulfide (PbS) nanocrystals. Cosensitizing N719 dye with resulting PbS nanocrystals in dye-sensitized solar cells demonstrates marked efficiencies up to 7.9%, an improvement of 29% compared with the absence of a cosensitizer. In this case, most of the absorbed light is involved in the photocurrent generation, confirmed by an incident photon-To-current conversion efficiency analysis, which is also in line with the ultraviolet-visible absorption spectra of these photoanodes. An increased precursor concentration has the negative effect on the power conversion efficiencies, primarily due to the blocking of incident light reaching the photosensitizer.

Original language	English
Pages (from-to)	512-516
Number of pages	5
Journal	IEEE Journal of Photovoltaics
Volume	8
Issue number	2
DOIs	https://doi.org/10.1109/JPHOTOV.2018.2790699
State	Published - Mar 2018

Bibliographical note

Publisher Copyright:
© 2011-2012 IEEE.

Keywords

Cosensitization
dye-sensitized solar cells
lead ethylxanthate
power conversion efficiencies

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/JPHOTOV.2018.2790699

Cite this

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title = "Enhancement of the Photovoltaic Performance of Dye-Sensitized Solar Cells by Cosensitizing TiO2 Photoanode with Uncapped PbS Nanocrystals and Ruthenizer",

abstract = "Spray coating of a lead xanthate precursor on titanium dioxide surfaces has been carried out to deposit uncapped lead sulfide (PbS) nanocrystals. Cosensitizing N719 dye with resulting PbS nanocrystals in dye-sensitized solar cells demonstrates marked efficiencies up to 7.9%, an improvement of 29% compared with the absence of a cosensitizer. In this case, most of the absorbed light is involved in the photocurrent generation, confirmed by an incident photon-To-current conversion efficiency analysis, which is also in line with the ultraviolet-visible absorption spectra of these photoanodes. An increased precursor concentration has the negative effect on the power conversion efficiencies, primarily due to the blocking of incident light reaching the photosensitizer.",

keywords = "Cosensitization, dye-sensitized solar cells, lead ethylxanthate, power conversion efficiencies",

author = "Umer Mehmood and Amir Al-Ahmed and Mohammad Afzaal and Hakeem, {Abbas S.} and {Abdullahi Haladu}, Samsuddeen and Al-Sulaiman, {Fahad A.}",

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AU - Mehmood, Umer

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AU - Afzaal, Mohammad

AU - Hakeem, Abbas S.

AU - Abdullahi Haladu, Samsuddeen

AU - Al-Sulaiman, Fahad A.

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AB - Spray coating of a lead xanthate precursor on titanium dioxide surfaces has been carried out to deposit uncapped lead sulfide (PbS) nanocrystals. Cosensitizing N719 dye with resulting PbS nanocrystals in dye-sensitized solar cells demonstrates marked efficiencies up to 7.9%, an improvement of 29% compared with the absence of a cosensitizer. In this case, most of the absorbed light is involved in the photocurrent generation, confirmed by an incident photon-To-current conversion efficiency analysis, which is also in line with the ultraviolet-visible absorption spectra of these photoanodes. An increased precursor concentration has the negative effect on the power conversion efficiencies, primarily due to the blocking of incident light reaching the photosensitizer.

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