TY - JOUR
T1 - Large-Area Uniform Polymer Transistor Arrays on Flexible Substrates
T2 - Towards High-Throughput Sensor Fabrication
AU - Zeidell, Andrew M.
AU - Filston, David S.
AU - Waldrip, Matthew
AU - Iqbal, Hamna F.
AU - Chen, Hu
AU - McCulloch, Iain
AU - Jurchescu, Oana D.
N1 - Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/8/1
Y1 - 2020/8/1
N2 - Solution-processable organic semiconductors can serve as the basis for new products including rollable displays, tattoo-like smart bandages for real-time health monitoring, and conformable electronics integrated into clothing or even implanted in the human body. For such exciting commercial applications to become a reality, good device performance and uniformity over large areas are necessary. The design of new materials has progressed at an astonishing pace, but accessing their intrinsic, efficient electrical properties in large-area flexible device arrays is difficult. The development of protocols that allow integration with industrial-scale processing for high-throughput manufacturing, without the need to compromise on performance, is the key for transitioning these materials to real-life applications. In this work, large-area arrays of organic thin-film transistors obtained by spray-coating the high-mobility polymer indacenodithiophene-co-benzothiadiazole (IDTBT) are demonstrated. A maximum charge carrier mobility of 2.3 cm2 V−1 s−1, with a very narrow performance distribution, is obtained over surface areas of 10 cm × 10 cm. The devices retain their electrical properties when bent multiple times and at different curvatures. In addition, large arrays of highly sensitive (0.25% change in mobility for 1% humidity variation), reusable, near-identical humidity sensors are produced in a one-step fabrication and calibrated from 0% to 94% relative humidity.
AB - Solution-processable organic semiconductors can serve as the basis for new products including rollable displays, tattoo-like smart bandages for real-time health monitoring, and conformable electronics integrated into clothing or even implanted in the human body. For such exciting commercial applications to become a reality, good device performance and uniformity over large areas are necessary. The design of new materials has progressed at an astonishing pace, but accessing their intrinsic, efficient electrical properties in large-area flexible device arrays is difficult. The development of protocols that allow integration with industrial-scale processing for high-throughput manufacturing, without the need to compromise on performance, is the key for transitioning these materials to real-life applications. In this work, large-area arrays of organic thin-film transistors obtained by spray-coating the high-mobility polymer indacenodithiophene-co-benzothiadiazole (IDTBT) are demonstrated. A maximum charge carrier mobility of 2.3 cm2 V−1 s−1, with a very narrow performance distribution, is obtained over surface areas of 10 cm × 10 cm. The devices retain their electrical properties when bent multiple times and at different curvatures. In addition, large arrays of highly sensitive (0.25% change in mobility for 1% humidity variation), reusable, near-identical humidity sensors are produced in a one-step fabrication and calibrated from 0% to 94% relative humidity.
KW - flexible electronics
KW - large-area electronics
KW - semiconductors
KW - sensors
KW - spray coating
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U2 - 10.1002/admt.202000390
DO - 10.1002/admt.202000390
M3 - Article
AN - SCOPUS:85086360082
SN - 2365-709X
VL - 5
JO - Advanced Materials Technologies
JF - Advanced Materials Technologies
IS - 8
M1 - 2000390
ER -