Charge transport in pyroprotein-based electronic yarns

Physical Chemistry Chemical Physics : PCCP
Jun Woo JeonByung Hoon Kim

Abstract

Pyroprotein-based carbon materials produced by heat-treating silk proteins have many potential applications in electronic devices, such as electronic textiles. To further develop potential electronic devices using these pyroproteins, the charge transport mechanism has to be verified. However, the electrical characteristics of the pyroproteins have not been reported yet. In this study, the temperature-dependent charge transport behavior of pyroprotein-based electronic yarns prepared from commercial silks (e-CS yarns) is investigated with respect to various heat treatment temperatures (HTT, 800, 1000, 1200, and 1400 °C). The linear current-voltage properties are shown at a low bias of 100 nA from 9 K to 300 K. The temperature-dependent resistivity of the e-CS yarns can be clearly described by the crossover of 3-dimensional Mott variable range hopping and fluctuation-induced tunneling conduction at the crossover temperature (Tc). These Tc factors are significantly different, due to the structural modulation of the e-CS yarns depending on the HTT, and are characterized by Raman spectroscopy, X-ray diffraction, and transmission electron microscopy. This study is expected to provide a better understanding of the electrical properties...Continue Reading

References

Mar 2, 2011·Advanced Materials·Chung-Hwa WangJenn-Chang Hwang
May 21, 2015·Nature Communications·Se Youn ChoHyoung-Joon Jin
Oct 1, 2015·Advanced Materials·Young Soo YunKisuk Kang
Dec 20, 2015·Advanced Materials·Bowen ZhuXiaodong Chen
Nov 30, 2016·Advanced Materials·Jun Woo JeonByung Hoon Kim
Jul 15, 2017·Nature Communications·Se Youn ChoHyoung-Joon Jin
Feb 7, 2019·ACS Applied Materials & Interfaces·Min Eui LeeYoung Soo Yun
Jul 10, 2019·ACS Applied Materials & Interfaces·Deokgyu NaByung Hoon Kim
Sep 20, 2019·Accounts of Chemical Research·Chunya WangDavid L Kaplan

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Methods Mentioned

BETA
thermal treatment
X-ray
transmission electron microscopy
electron diffraction
scanning electron microscopy

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