Format

Send to

Choose Destination
Nanoscale. 2016 Apr 21;8(15):7978-83. doi: 10.1039/c6nr00602g.

Transparent megahertz circuits from solution-processed composite thin films.

Author information

1
Department of Physics and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan 430072, China. liaolei@whu.edu.cn.
2
Science and Technology on Monolithic Integrated Circuits and Modules Laboratory, Nanjing Electronic Device Institute, Nanjing 210016, China.
3
Department of Chemistry and Biochemistry, University of California, Los Angeles, CA 90095, USA.
4
Department of Electronic & Computer Engineering, The Hong Kong University of Science & Technology, Hong Kong SAR, China.

Abstract

Solution-processed amorphous oxide semiconductors have attracted considerable interest in large-area transparent electronics. However, due to its relative low carrier mobility (∼10 cm(2) V(-1) s(-1)), the demonstrated circuit performance has been limited to 800 kHz or less. Herein, we report solution-processed high-speed thin-film transistors (TFTs) and integrated circuits with an operation frequency beyond the megahertz region on 4 inch glass. The TFTs can be fabricated from an amorphous indium gallium zinc oxide/single-walled carbon nanotube (a-IGZO/SWNT) composite thin film with high yield and high carrier mobility of >70 cm(2) V(-1) s(-1). On-chip microwave measurements demonstrate that these TFTs can deliver an unprecedented operation frequency in solution-processed semiconductors, including an extrinsic cut-off frequency (f(T) = 102 MHz) and a maximum oscillation frequency (f(max) = 122 MHz). Ring oscillators further demonstrated an oscillation frequency of 4.13 MHz, for the first time, realizing megahertz circuit operation from solution-processed semiconductors. Our studies represent an important step toward high-speed solution-processed thin film electronics.

PMID:
27009830
DOI:
10.1039/c6nr00602g

Supplemental Content

Full text links

Icon for Royal Society of Chemistry
Loading ...
Support Center