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Multifunctional, Room-Temperature Processable, Heterogeneous Organic Passivation Layer for Oxide Semiconductor Thin-Film Transistors
- Source :
- ACS applied materialsinterfaces. 12(2)
- Publication Year :
- 2019
-
Abstract
- In recent decades, oxide thin-film transistors (TFTs) have attracted a great deal of attention as a promising technology in terms of next-generation electronics due to their outstanding electrical performance. However, achieving robust electrical characteristics under various environments is a crucial challenge for successful realization of oxide-based electronic applications. To resolve the limitation, we propose a highly flexible and reliable heterogeneous organic passivation layer composed of stacked parylene-C and diketopyrrolopyrrole-polymer films for improving stability of oxide TFTs under various environments and mechanical stress. The presented multifunctional heterogeneous organic (MHO) passivation leads to high-performance oxide TFTs by: (1) improving their electrical characteristics, (2) protecting them from external reactive molecules, and (3) blocking light exposure to the oxide layer. As a result, oxide TFTs with MHO passivation exhibit outstanding stability in ambient air as well as under light illumination: the threshold voltage shift of the device is almost 0 V under severe negative bias illumination stress condition (white light of 5700 lx, gate voltage of -20 V, and drain voltage of 10.1 V for 20 000 s). Furthermore, since the MHO passivation layer exhibits high mechanical stability at a bending radius of ≤5 mm and can be deposited at room temperature, this technique is expected to be useful in the fabrication of flexible/wearable devices.
- Subjects :
- Materials science
Passivation
Oxide
Hardware_PERFORMANCEANDRELIABILITY
02 engineering and technology
01 natural sciences
law.invention
chemistry.chemical_compound
Oxide semiconductor
law
0103 physical sciences
Hardware_INTEGRATEDCIRCUITS
General Materials Science
Electronics
010302 applied physics
business.industry
Transistor
Parylene C
021001 nanoscience & nanotechnology
chemistry
Thin-film transistor
Optoelectronics
0210 nano-technology
business
Layer (electronics)
Hardware_LOGICDESIGN
Subjects
Details
- ISSN :
- 19448252
- Volume :
- 12
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- ACS applied materialsinterfaces
- Accession number :
- edsair.doi.dedup.....b7c64ae4d2939179b1d93d4ed9cfcb69