Alkahest for V₂VI₃ Chalcogenides: Dissolution of Nine Bulk Semiconductors in a Diamine-Dithiol Solvent Mixture

Abstract

The ability to solution deposit semiconductor films has received a great deal of recent attention as a way to potentially lower costs for many optoelectronic applications; however, most bulk semiconductors are insoluble in common solvents. Here we describe a novel and relatively nonhazardous binary solvent mixture comprised of 1,2-ethanedithiol and 1,2-ethylenediamine that possesses the remarkable ability to rapidly dissolve a series of nine bulk V2VI3 chalcogenides (V = As, Sb, Bi; VI = S, Se, Te) at room temperature and atmospheric pressure. After solution deposition and low-temperature annealing, the chalcogenides can be fully recovered as good quality, highly crystalline thin films with negligible organic content, as demonstrated for Sb2Se3 and Bi2S3.

TiO2 Nanotube/Chalcogenide-Based Photoelectrochemical Cell: Nanotube Diameter Dependence Study

“…We presented novel anodization protocol and photo-electrochemical results for anodic TiO 2 nanotubes grown with different diameter sizes (21,35, 56 and 95 nm) utilized as highly ordered n-type conductive scaffold for inorganic chromophore (Sn-S-Se). While downscaling the nanotube diameter significantly increased the number of nanotubes per square unit and thus the active surface area increased as well, we found that the photo-electrochemical response was identical and thus independent of the TiO 2 diameter nanotube size, but it correlated with the thickness of the nanotube layers.…”

“…As in the case of organic dyes or organohalide perovskites, the absorbing chalcogenide layer can be deposited via a solvent solution process, i.e. a hydrazine-based [18][19][20] or a mixture of 1,2-ethylenediamine + 1,2-ethanedithiol-based 21 solutions. This process is amenable to infill or coat TiO 2 nanotube layers in order to form hybrid solar cells easily and cheaply.…”

The Predominance of Hydrogen Evolution on Transition Metal Sulfides and Phosphides under CO2 Reduction Conditions: An Experimental and Theoretical Study

“…Thin films of SnS were synthesized using literature procedures. [7][8] Briefly, bulk SnS powder was dissolved in 11:1 vol/vol mixture of ethylenediamine and 1,2-ethanedithiol at 50 °C for 15 h at a concentration of 60 mg mL -1 . Solutions were then filtered using a 0.45 µm filter and spin coated onto FTO substrates.…”

Composition-matched molecular “solders” for semiconductors

“…The severity of this situation is underscored by the fact that resistance to piperaquine, an ACT partner drug, is emerging in western Cambodia (8,9). No alternative, fully effective first-line therapy is currently available to replace ACTs, should ART fail globally.…”