期刊
IEEE TRANSACTIONS ON ELECTRON DEVICES
卷 68, 期 5, 页码 2522-2529出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TED.2021.3066138
关键词
Electrospinning; field-effect transistors (FETs); indium oxide (In2O3) nanofiber; inverter
资金
- National Natural Science Foundation of China [11774001]
- Open Fund for Discipline Construction, Institute of Physical Science and Information Technology, Anhui University [S01003101]
- Doctoral Research Funding of Anhui University
- Provincial Natural Science Research Program of Higher Education Institutions of Anhui Province [KJ2018A0026]
- Natural Science Research Project of Colleges and Universities in Anhui Province [KJ2018ZD060]
High-quality indium oxide nanofibers were obtained via electrospinning and investigated for their properties. Optimized electrospinning time improved the electrical performance of field-effect transistors, while a high-k dielectric layer significantly reduced operating voltage and enhanced stability.
Electrospinning one-dimensional (1-D) semiconductor nanofibers have been regarded as one of the most promising building blocks for future nanoelectronics with high performance because they can exhibit a broad range of device functions. However, electronic devices based on electrospinning-driven nanofibers often suffer frompoor performance and inferior quality. In currentworks, continuous and uniform high-quality indium oxide (In2O3) nanofibers were obtained by electrospinning. The surface morphology, crystallinity, optical, and electrical properties of the In2O3 nanofibers were investigated by X-ray diffraction, scanning electron microscopy, optical spectroscopy, and electrical measurements. It has been detected that the field-effect transistors (FETs) with optimized electrospinning time of 30 s demonstrated superior electrical performance, including a high field-effect mobility (mu FE) of 9.1 cm(2).V-1.s(-1) and a large I-ON/I-OFF of 107. The high-k Al2O3 dielectric layer has also been used to greatly reduce the operating voltage (from 30 to 3 V), significantly improve mu FE (to 27.7 cm(2).V-1.s(-1)), and strengthen stability over cycling. To prove the device's potential in more complex logic circuit applications, a resistor-loaded inverter was further integrated, and themaximumvoltage gain of 9.8 was demonstrated at an ultralow operating voltage of 3 V. The present findings have demonstrated that electrospinning can potentially be used as a straightforward and costeffective means for the assembly of 1-D nanostructures for use in next-generation low-power devices.
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