TY - JOUR
T1 - Application of pentacene thin-film transistors with controlled threshold voltages to enhancement/depletion inverters
AU - Takahashi, Hajime
AU - Hanafusa, Yuki
AU - Kimura, Yoshinari
AU - Kitamura, Masatoshi
N1 - Funding Information:
This work was supported by a Grant-in-Aid for Scientific Research, Challenging Research (Pioneering), Grant Number 17H06229.
Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/3
Y1 - 2018/3
N2 - Oxygen plasma treatment has been carried out to control the threshold voltage in organic thin-film transistors (TFTs) having a SiO2 gate dielectric prepared by rf sputtering. The threshold voltage linearly changed in the range of -3.7 to 3.1 V with the increase in plasma treatment time. Although the amount of change is smaller than that for organic TFTs having thermally grown SiO2, the tendency of the change was similar to that for thermally grown SiO2. To realize different plasma treatment times on the same substrate, a certain region on the SiO2 surface was selected using a shadow mask, and was treated with oxygen plasma. Using the process, organic TFTs with negative threshold voltages and those with positive threshold voltages were fabricated on the same substrate. As a result, enhancement/depletion inverters consisting of the organic TFTs operated at supply voltages of 5 to 15 V.
AB - Oxygen plasma treatment has been carried out to control the threshold voltage in organic thin-film transistors (TFTs) having a SiO2 gate dielectric prepared by rf sputtering. The threshold voltage linearly changed in the range of -3.7 to 3.1 V with the increase in plasma treatment time. Although the amount of change is smaller than that for organic TFTs having thermally grown SiO2, the tendency of the change was similar to that for thermally grown SiO2. To realize different plasma treatment times on the same substrate, a certain region on the SiO2 surface was selected using a shadow mask, and was treated with oxygen plasma. Using the process, organic TFTs with negative threshold voltages and those with positive threshold voltages were fabricated on the same substrate. As a result, enhancement/depletion inverters consisting of the organic TFTs operated at supply voltages of 5 to 15 V.
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U2 - 10.7567/JJAP.57.03EH03
DO - 10.7567/JJAP.57.03EH03
M3 - Article
AN - SCOPUS:85042644859
VL - 57
JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes
SN - 0021-4922
IS - 3
M1 - 03EH03
ER -