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Impact of moisture contents on the performance of organic bi-layer ITO/OD thermo-electric cells

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Abstract

We propose a bi-layer thermo-electric cell based on elastic indium tin oxide (ITO) substrate and organic semiconductor orange dye (OD). It is observed that thermo-electric voltages are ~30 % higher in bi-layer ITO/OD cell as compared to the single layer ITO cell. This improvement is caused by an obvious increase in Seebeck coefficient, which could be related to the appropriate electrical and thermal conductivities of the bi-layer organic thermo-electric cell. The effect of moisture contents on the Seebeck coefficient of the ITO/OD based bi-layer thermo-electric cell has also been investigated. The experimental results clearly show that with the increase of temperature Seebeck coefficient increases, whereas with increasing moisture contents the Seebeck coefficient of the ITO/OD thermo-electric cell significantly decreases. Our results point out the need for well-controlled environmental conditions, predominantly moisture level, in order to appraise the thermo-electric performance of organic semiconductor materials.

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Acknowledgments

This publication was made possible by PDRA Grant No. PDRA1-0117-14109 from the Qatar National Research Fund (a member of Qatar Foundation). The findings achieved herein are solely the responsibility of the authors.

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Authors and Affiliations

  1. Department of Electrical Engineering, College of Engineering, Qatar University, P. O. Box 2713, Doha, Qatar

    Zubair Ahmad & Farid Touati

  2. Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, District Swabi, KPK, 23640, Pakistan

    Khasan S. Karimov & Rashid Ali

  3. Center for Innovative Development of Science and Technologies of Academy of Sciences, Aini 299/2, 734063, Dushanbe, Tajikistan

    Khasan S. Karimov

  4. Department of Electrical Engineering, Faculty of Engineering & Islamic Architecture, Umm-ul-Qura University, P. O. Box 5555, Makkah, Saudi Arabia

    S. A. Moiz

  5. Center for Advanced Materials, Qatar University, P. O. Box 2713, Doha, Qatar

    R. A. Shakoor & N. J. Al-Thani

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  1. Zubair Ahmad
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  2. Khasan S. Karimov
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  3. Farid Touati
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  4. S. A. Moiz
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  5. Rashid Ali
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  6. R. A. Shakoor
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  7. N. J. Al-Thani
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Correspondence to Zubair Ahmad.

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Ahmad, Z., Karimov, K.S., Touati, F. et al. Impact of moisture contents on the performance of organic bi-layer ITO/OD thermo-electric cells. J Mater Sci: Mater Electron 27, 9720–9724 (2016). https://doi.org/10.1007/s10854-016-5034-z

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  • DOI: https://doi.org/10.1007/s10854-016-5034-z

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