Intercalation and delamination of layered carbides and carbonitrides

Transparent, conductive solution processed spincast 2D Ti2CTx (MXene) films

“…However, to date, by far the most studied remains the first MXene discovered: Ti 3 C 2 T x [13]. This material has shown outstanding performance as an electrode material for supercapacitors and Li battery electrodes [17][18][19][20], electromagnetic shielding [21][22][23], among a slew of other applications [24,25].…”

Thin-film Sb2Se3 photovoltaics with oriented one-dimensional ribbons and benign grain boundaries

“…The texture coefficient measures film orientation ( Supplementary Fig. S6), with large texture coefficients for a diffraction peak indicating preferred orientation along this direction 22 . There exists a strong correlation between device performance and film orientation: device efficiency monotonically decreases when the texture coefficient of (120) orientation increases.…”

Improving the stability and optical properties of germanane via one-step covalent methyl-termination

“…Researchers have recently developed layered van der Waals systems in which each surface atom requires a covalent ligand to become coordinatively saturated, such as the metal carbide/ nitride MXenes, the amine coordinated II-VI chalcogenides, and the group IV graphene analogues such as silicane or germanane 9,[16][17][18][19][20] . Because the valence/conduction bands of these materials are comprised of metal-metal or metal-anion bonding within the 2D plane 21 , rather than the p-bands such as that in graphene, these systems offer the possibility to tune the entire electronic properties on the basis of the identity and electron withdrawing capability of the substituent, without completely disrupting the relevant electronic states.…”