Abstract
Carrier mobility is a basic parameter of organic semiconductors. In this paper, hole mobility of zinc phthalocyanine (ZnPc) thin films was determined by light-intensity-dependent current–voltage characteristics. Firstly, built-in voltage, Vbi, of the organic diode with the structure of “ITO/zinc phthalocyanine (ZnPc)/2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP)/Al” was measured as 0.45 V by using saturation photovoltage method. Based on the value of Vbi, the hole mobility of ZnPc thin film was (1.619 ± 0.06) × 10−6 cm2 V−1 s−1 by fitting the measured photocurrent–voltage characteristic with the established theory of space-charge-limited photocurrent conduction. The measured carrier mobility coincides with that reported in other literature.
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Acknowledgements
This work was supported by National Key R&D Program of China Grant No. 2016YFF0203605, and the Natural Science Foundation of Zhejiang Province Grant No. LY18F050009 and LY18F040007.
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Ye, Y. et al. (2020). Determining Hole Mobility of Zinc Phthalocyanine Thin Films by Light-Intensity-Dependent Current–Voltage Characteristics. In: Peng, Y., Dong, X. (eds) Proceedings of 2018 International Conference on Optoelectronics and Measurement. Lecture Notes in Electrical Engineering, vol 567. Springer, Singapore. https://doi.org/10.1007/978-981-13-8595-7_29
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DOI: https://doi.org/10.1007/978-981-13-8595-7_29
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