Abstract
The paper presents the construction and fabrication
method of a pressure sensor matrix with organic
field-effect transistors. The sensor structure consists
of a matrix of air-gap transistors which is realized by
roll-to-roll processing and laminating methods. High
aspect ratio spacer structures are made by inkjet
printing. The sensor cell transistor senses the applied
force on the top substrate due to changes in the air-gap
dimension. The sensor matrix has measurement range of 0.4
kPa-1-4.4 kPa-1, sensitivity 0.4 ± 0.1 kPa-1 and time
response better than 300 ms. The structure is scalable
and it has a sensitivity comparable to state of the art
pressure sensor matrices that use organic field-effect
transistors. Its fabrication process, however, includes
standard, low cost mass production steps of printed
electronics and it can be transferred to a roll-to-roll
process.
Original language | English |
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Pages (from-to) | 343-348 |
Journal | Sensors and Actuators A: Physical |
Volume | 236 |
DOIs | |
Publication status | Published - 2015 |
MoE publication type | A1 Journal article-refereed |
Keywords
- pressure sensor
- printed electronics
- tactile sensing