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66‐2: Printed Carbon Nanotube Thin‐film Transistors and Application in OLED Backplane Circuits
Author(s) -
Xu Wenya,
Xu Qiqi,
Zhou Chunshan,
Gu Weibing,
Lin Jian,
Zhao Jianwen,
Cui Zheng
Publication year - 2017
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.11814
Subject(s) - thin film transistor , materials science , backplane , oled , carbon nanotube , optoelectronics , electronic circuit , transistor , active matrix , printed electronics , nanotechnology , voltage , electrical engineering , composite material , layer (electronics) , inkwell , engineering
In this work, we reported a valid method to sort large‐diameter semiconducting single‐walled carbon nanotubes (sc‐SWCNTs) from commercial arc discharge SWCNTs by different conjugated organic compounds. Seven kinds of high‐purity sc SWCNT inks were achieved. As‐prepared sc‐SWCNT inks were directly used to fabricate printed SWCNT TFT arrays and backplane circuits on rigid substrates. It was found that printed SWCNT TFT devices exhibited high‐performance with low operating voltage (±2 V), small subthreshold swing (ss), small hysteresis, high mobility (more than 20 cm 2 /Vs) and high on/off ratios (up to 10 6 ). Printed 2T‐1C driving circuit exhibited high on/off ratio up to 10 5 and high output current up to 8×10 ‐5 μ A at V data , V scan and V dd of ‐2 V, respectively. Furthermore, 15×15 OLED pixel arrays were switched on with printed SWCNT driving circuits on glass substrates, suggesting printed SWCNT driving circuits have the potential as backplanes for active matrix OLED applications.