The And Optical Properties Of The Electrical Performance Of Nc Tfts

925 Words May 14th, 2016 4 Pages
Nanocrystals (NCs) are interesting material, as their electrical and optical properties can be tuned by tuning their size or surface area. They have diverse applications in electrical devices. Nanocrystal thin film transistors (NC TFTs) have been intensively researched, because of their low-temperature processability.1,2 Colloidal NCs are synthesized in a liquid solution containing some stabilizing organic molecules, broadly termed as surfactants, which are bulky and insulating ligands. The individual NCs in the thin film are indeed separated by these ligands, which significantly inhibit the charge transport. One of the simple yet effective ways to enhance the electrical performance of NC TFTs is the ligand exchange approach,2,3 replacing the long, insulating native ligands by short and more conductive molecules.1–6 Another way to decrease the inter distance, while keeping the NC size the same, is to anneal the NC solid at temperatures well below the melting temperature of NC cores.7
Metal oxide semiconductors have been intensively investigated for applications in electronics. Among many metal oxide semiconductors, indium oxide (In2O3) has been considered as a promising material for TFT applications owing to its wide band gap (3.6–3.75 eV) and excellent single crystal mobility (160 cm2/V.s).8,9 While the fabrication of In2O3 TFTs using the precursor-approach9–11 and NC TFTs of zinc oxide (ZnO)-based has been well investigated,12,13 the fabrication of In2O3 TFTs via the…

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