title: Nanocrystal-based complementary inverters constructed on flexible plastic substrates.
abstract: We demonstrate a nanocrystal (NC)-based complementary inverter constructed on a flexible plastic substrate. The NC-based complementary inverter consists of n-type HgSe NC- and p-type HgTe NC-based thin-film transistors (TFTs). Solid films on a plastic substrate obtained from HgSe and HgTe nanocrystals by thermal transformation are utilized as the n- and p-channel layers in these TFTs, respectively. The electrical properties of these component TFTs on unstrained and strained substrates are characterized and the performance of the inverter on the flexible substrate is investigated. The inverter on the unstrained substrate exhibits a logic gain of about 8, a logic swing of 90%, and a noise margin of 2.0 V. The characteristics of the inverter are changed under tensile and compressive strains, but not very significantly. Moreover, a comparison of the electrical characteristics of the n- and p-channel TFTs and the inverter is made in this paper.
authors.affiliation: Department of Electrical Engineering, Korea University, Seoul 136-713, Korea.
authors.forename: Jaewon
authors.initials: J
authors.lastname: Jang
authors.forename: Kyoungah
authors.initials: K
authors.lastname: Cho
authors.forename: Junggwon
authors.initials: J
authors.lastname: Yun
authors.forename: Sangsig
authors.initials: S
authors.lastname: Kim
mesh_terms: D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D010969:Plastics / Q000737:chemistry*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D014173:Transistors, Electronic
chemical_list: D010969:Plastics