We report the construction and characterization of a representative vertical inverter with a nanoparticle (NP)-based p-channel thin-film transistor (TFT) and a NP-based n-channel TFT on a flexible substrate. The vertical inverter consists of a p-type HgTe NP-based TFT on the first-stair layer and an n-type HgSe NP-based TFT on the second-stair layer. In the vertical inverter, an isolation layer made of polyvinyl alcohol prevents the cross talk between these TFTs. The vertical inverter exhibits the typical inverter characteristics with a gain of 4, and the reproducible operation was obtained in the upward and downward bending states, as well as in the flat state. Moreover, the inverter characteristics were maintained even after 1000 bending cycles with 0.7% strain.
Bibliographical noteFunding Information:
This work was supported by the Nano R&D Program ( M10703000980 - 08M0300-98010 ) and World Class University (WCU , R32-2008-000-10082-0 ) Project of the Ministry of Education, Science and Technology (Korea Science and Engineering Foundation) .
- Electronic circuits
- Flexible substrate
- II-VI semiconductors
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry