Cu(II) 5,10,15,20-tetrakis(4-isopropylphenyl) porphyrin based photo capacitive Detectors
Sayyad, M., Saleem, M., Karimov, K., Ahmad, Z., Shah, M., Yaseen, M., Khokhar, I., Ali, M. (2008). Cu(II) 5,10,15,20-tetrakis(4-isopropylphenyl) porphyrin based photo capacitive Detectors. EKB Journal Management System, 6(6th International Conference on Electrical Engineering ICEENG 2008), 1-9. doi: 10.21608/iceeng.2008.34320
Muhammad H. Sayyad; Muhammad Saleem; Khasan S. Karimov; Zubair Ahmad; Mutabar Shah; Muhammad Yaseen; Irshad Khokhar; Mukhtar Ali. "Cu(II) 5,10,15,20-tetrakis(4-isopropylphenyl) porphyrin based photo capacitive Detectors". EKB Journal Management System, 6, 6th International Conference on Electrical Engineering ICEENG 2008, 2008, 1-9. doi: 10.21608/iceeng.2008.34320
Sayyad, M., Saleem, M., Karimov, K., Ahmad, Z., Shah, M., Yaseen, M., Khokhar, I., Ali, M. (2008). 'Cu(II) 5,10,15,20-tetrakis(4-isopropylphenyl) porphyrin based photo capacitive Detectors', EKB Journal Management System, 6(6th International Conference on Electrical Engineering ICEENG 2008), pp. 1-9. doi: 10.21608/iceeng.2008.34320
Sayyad, M., Saleem, M., Karimov, K., Ahmad, Z., Shah, M., Yaseen, M., Khokhar, I., Ali, M. Cu(II) 5,10,15,20-tetrakis(4-isopropylphenyl) porphyrin based photo capacitive Detectors. EKB Journal Management System, 2008; 6(6th International Conference on Electrical Engineering ICEENG 2008): 1-9. doi: 10.21608/iceeng.2008.34320

Cu(II) 5,10,15,20-tetrakis(4-isopropylphenyl) porphyrin based photo capacitive Detectors

The International Conference on Electrical Engineering
Article 78, Volume 6, 6th International Conference on Electrical Engineering ICEENG 2008, May 2008, Page 1-9  XML PDF (87.82 K)
Document Type: Original Article
DOI: 10.21608/iceeng.2008.34320
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Authors
Muhammad H. Sayyad1; Muhammad Saleem1; Khasan S. Karimov2; Zubair Ahmad1; Mutabar Shah1; Muhammad Yaseen2; Irshad Khokhar2; Mukhtar Ali3
1Faculty of Engineering Sciences, GIK Institute of Engineering Sciences and Technology, Topi, District Swabi, N.W.F.P., 23460, Pakistan.
2Institute of Chemistry, University of the Punjab, Lahore 54000, Pakistan.
3Department of Chemistry, Government College of Science, Wahdat Road, Lahore, Pakistan.
Abstract
Abstract:
In this study a photosensitive organic semiconductor Cu(II) 5,10,15,20-tetrakis(4􀆍-
isopropylphenyl) porphyrin (CuTIPP) was synthesized and investigated as an active
material in photocapacitive detectors. Thin films of the CuTIPP were deposited by
sublimation on a glass substrate with preliminary deposited metal electrodes and
Al/CuTIPP/Al and Au/CuTIPP/Au surface type photocapacitive detectors were
fabricated. Thickness of the CuTIPP films was equal to 100 nm in the Al/CuTIPP/Al
and Au/CuTIPP/Au detectors. Length and width of the semiconducting channel between
metallic electrodes were equal to 40 􀈝m and 15 mm, respectively. It was observed that
under filament lamp illumination of up to 4000 lx the capacitance of the Al/CuTIPP/Al
and Au/CuTIPP/Au photocapacitive detectors increased by 2.6 and 2.2 times,
respectively, with respect to the dark conditions. The photoconductivity of the detectors
increased with illumination as well. It is assumed that the photocapacitive response of
the detectors is associated with polarization occurring due to the transfer of photogenerated
electrons and holes. The equivalent circuit of the photocapacitive detectors is
presented. Data obtained by simulation showed reasonable matching with experimental
results.
Keywords
Organic semiconductor; Cu(II) 5; 10; 15; 20-tetrakis(4􀆍-isopropylphenyl) porphyrin (CuTIPP); detector; surface-type photocapacitor; Polarization; photoconductivity
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