Journal
ORGANIC ELECTRONICS
Volume 72, Issue -, Pages 25-29Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2019.05.045
Keywords
Organic semiconductors; Pentacene; Organic thin-film transistors; Ambipolar transistors; Temperature sensors
Funding
- Ministry of Science and Technology, Taiwan [MOST 105-2221-E-006-205-MY3]
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Efficient and balanced pentacene-based ambipolar organic thin-film transistors (AmOTFTs) were prepared and ready for use to achieve simple fabrication of complementary-like inverters with high gains. We examined the effect of temperature on the electrical characteristics of pentacene-based AmOTFTs and corresponding complementary-like inverters. Such complementary-like inverters can perform nonpolar operations, such as first and third quadrant operations, and can work normally up to nearly 110 degrees C. In situ measurements demonstrated the excellent thermal stability of pentacene active layer at the corresponding temperatures. The operating principle of the ambipolar-based complementary-like inverters was also discussed. Given the ambipolar nature of pentacene active channel, the dual-carrier recombination and release processes governed the temperature-dependent switch behaviors of the inverters. A temperature-dependent linearity function was derived using the hysteresis switch voltage, thereby highlighting that pentacene-based ambipolar complementary-like inverters could potentially be employed in temperature sensors.
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