Flexible logic circuits based on top-gate thin film transistors with printed semiconductor carbon nanotubes and top electrodes

Nanoscale ◽  
2014 ◽  
Vol 6 (24) ◽  
pp. 14891-14897 ◽  
Author(s):  
Weiwei Xu ◽  
Zhen Liu ◽  
Jianwen Zhao ◽  
Wenya Xu ◽  
Weibing Gu ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Thin Film Transistors ◽  
Logic Circuits ◽  
Semiconductor Carbon Nanotubes

Flexible, high mobility short-channel organic thin film transistors and logic circuits based on 4H-21DNTT

2021 ◽  
Author(s):  
Anubha Bilgaiyan ◽  
Seung-Il Cho ◽  
Miho Abiko ◽  
Kaori Watanabe ◽  
Makoto Mizukami
Keyword(s):  
Thin Film ◽  
Thin Film Transistors ◽  
High Performance ◽  
Channel Length ◽  
Logic Circuits ◽  
Organic Thin Film Transistors ◽  
Limiting Factors ◽  
Organic Thin Film ◽  
Short Channel ◽  
Inverter Circuit

Abstract The low mobility and large contact resistance in organic thin-film transistors (OTFTs) are the two major limiting factors in the development of high-performance organic logic circuits. Here, solution-processed high-performance OTFTs and circuits are reported with a polymeric gate dielectric and 6,6 bis (trans-4-butylcyclohexyl)-dinaphtho[2,1-b:2,1-f ]thieno[3,2-b]thiophene (4H-21DNTT) for the organic semiconducting layer. By optimizing and controlling the fabrication conditions, a record high saturation mobility of 8.8 cm2V− 1s− 1 was demonstrated as well as large on/off ratios (> 106) for relatively short channel lengths of 15 µm and an average carrier mobility of 10.5 cm2V-1s-1 for long channel length OTFTs (> 50 µm). The pseudo-CMOS inverter circuit with a channel length of 15 µm exhibited sharp switching characteristics with a high signal gain of 31.5 at a supply voltage of 20 V. In addition to the inverter circuit, NAND logic circuits were further investigated, which also exhibited remarkable logic characteristics, with a high gain, an operating frequency of 5 kHz, and a short propagation delay of 22.1 µs. The uniform and reproducible performance of 4H-21DNTT OTFTs show potential for large-area, low-cost real-world applications on industry-compatible bottom-contact substrates.

Using unsorted single-wall carbon nanotubes to enhance mobility of diketopyrrolopyrrole-quarterthiophene copolymer in thin-film transistors

2014 ◽  
Vol 15 (11) ◽  
pp. 2639-2646 ◽  
Author(s):  
Chad Smithson ◽  
Yiliang Wu ◽  
Tony Wigglesworth ◽  
Sandra Gardner ◽  
Shiping Zhu ◽  
...  
Keyword(s):  
Thin Film ◽  
Carbon Nanotubes ◽  
Thin Film Transistors ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon
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