PEDOT∶PSS掺杂丝素蛋白复合薄膜的半导体性能

doi:10.11896/cldb.18040192

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Abstract In order to reveal the field effect of silk fibroin and organic semiconductor polymer (PEDOT∶PSS) composite film asan active layer, the thin film with uniform thickness and good surface smoothness based transistor was fabricated onto heavily doped silicon dioxide by spin-coating method. The potential in semiconductor application of this biocompatible degradable material was investigated. The conformational evolution of silk fibroin and PEDOT∶PSS composite film was analyzed by XRD, UV-Vis spectrophotometer, FTIR and Raman spectroscopy. The output and transfer characteristic curves of the device were analyzed and studied. The ratio of the switching current is about 3, the threshold voltage is 20 V, and the field-effect mobility is about 7.9 cm²/(V·s). The experimental results show that the composite material prepared by an appropriate process by mixing PEDOT∶PSS to silk fibroin can still retain the excellent electronic properties of organic semiconductors. It is proved that doping in biological materials is an effective method to prepare functionalized biocomposites for broadening its applications.

Key words： silk fibroin PEDOT∶PSS organic field-effect transistor functionalization

Published: 16 May 2019

CLC number:

TB34

Fund:This work was financially supported by the National Natural Science Foundation of China (11404272), the Fundamental Research Funds for the Central Universities (20720140514), the Natural Science Foundation of Fujian Province of China (22171024), and the Doctoral Fund of the Ministry (20130121110018).

About author:: Xiangyu Xu studied at the College of Materials and Research Institute for Soft Matter and Biomimetics, Xiamen University, Fujian Province, from March 2015 to June 2018. He is mainly engaged in the preparation of biomolecules and two-dimensional composite materials. He received his M.S. degree in June 2018 from Xiamen University in engineering.
Da Zhan received his Ph.D. degree in physics and applied physics from Nanyang Technological University in 2013. He is currently an associate professor in the College of Materials and Research Institute for Soft Matter and Biomimetics, Xiamen University. His main research interests are to detect the electronic band structure of two-dimensional electronic materials through the characteristics of biomolecules, including potential biosensing applications.

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	XU Xiangyu
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Cite this article:

XU Xiangyu,LI Hongkun,ZHAN Da, et al. Semiconducting Properties of PEDOT∶PSS Doped Silk Fibroin Composite Film[J]. Materials Reports, 2019, 33(10): 1734-1737.

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http://www.mater-rep.com/EN/10.11896/cldb.18040192 OR http://www.mater-rep.com/EN/Y2019/V33/I10/1734

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