Self-Aligned Ionic Doping of TiO Thin-Film Transistors for Enhanced Current Drivability via Postfabrication Superacid Treatment.

Oxide semiconductor thin-film transistors (TFTs) have shown great potential in emerging applications such as flexible displays, radio-frequency identification tags, sensors, and back-end-of-line compatible transistors for monolithic 3D integration beyond their well-established flat-plane display technology. To meet the requirements of these appealing applications, high current drivability is essential, necessitating exploration in materials science and device engineering. In this work, we report for the first time on a simple solution-based superacid (SA) treatment to enhance the current drivability of top-gate TiO TFTs with a gate-offset structure.

High pressure nanoarchitectonics and metallization of barium chloride and barium bromide.

As one of the most prototypical-type compounds, barium halide shared the cubic structure with-3symmetry for BaClor orthorhombic structure withsymmetry for BaBrat ambient pressure. In this work, we explored the crystal structures of BaCland BaBrunder high pressure. We predicted a thermodynamically more favored structure with orthorhombicsymmetry for both BaCland BaBr, at 74 and 47 GPa, respectively.

High-Pressure Structures and Superconductivity of Barium Iodide.

Generally, pressure is a useful tool to modify the behavior of physical properties of materials due to the change in distance between atoms or molecules in the lattice. Barium iodide (BaI), as one of the simplest and most prototypical iodine compounds, has substantial high pressure investigation value. In this work, we explored the crystal structures of BaI at a wide pressure range of 0-200 GPa using a global structure search methodology.

Globally stable structures of LixZn (x = 1-4) compounds at high pressures.

Pressure can change the properties of atoms and bonding patterns, leading to the synthesis of novel compounds with interesting properties. The intermetallic lithium-zinc (Li-Zn) compounds have attracted increasing attention because of their fascinating mechanical properties and widespread applications in rechargeable Li-ion batteries. Using the effective CALYPSO searching method in combination with first-principles calculations, we theoretically investigated the LixZn (x = 1-4) compounds at pressures of 0 to 100 GPa.

Hypervalent Iodine with Linear Chain at High Pressure.

Iodine is an element of fascinating chemical complexity, and numerous hypervalent iodine compounds reveal vital value of applications in organic synthesis. Investigation of the synthesis and application of new type of hypervalent iodine compound has extremely significant meaning. Here, the formation of CsIn (n > 1) compounds is predicted up to 200 GPa using an effective algorithm.

High-pressure phase transition of cesium chloride and cesium bromide.

The high-symmetry cubic cesium chloride (CsCl) structure with a space group of Pm3¯m (Z = 1) is one of the prototypical AB-type compounds, which is shared with cesium halides and many binary metallic alloys. The study of high-pressure evolution of the CsCl phase is of fundamental importance in helping to understand the structural sequence and principles of crystallography. Here, we have systematically investigated the high-pressure structural transition of cesium halides up to 200 GPa using an effective CALYPSO algorithm.