Electrodeposition of gallium in the presence of NH₄Cl in an ionic liquid: hints for GaN formation

Abstract

Group III-V semiconductors are important in the production of a variety of optoelectronic devices. At present, these semiconductors are synthesized by high vacuum techniques. Here we report on the electrochemical deposition of GaN which seems to form in quite a thin layer from NH4Cl and GaCl3 in an ionic liquid.

Intrinsic energy band alignment of functional oxides

“…CV was stopped at the initial open‐circuit potential to avoid oxidation of the copper electrode. The CV results are consistent with previously reported data 24. Figure 1 b shows the CV results for 0.1 M GeCl 4 in [Py 1,4 ]Tf 2 N on electrodeposited gallium.…”

Ambient temperature deposition of gallium nitride/gallium oxynitride from a deep eutectic electrolyte, under potential control

“…Recently, it has been demonstrated that instead of lattice matched substrates, surfaces with appropriate buffer layers could also be used for growing high-quality GaN films. [8][9][10] Certain soft chemical methods [11][12][13][14][15][16][17][18][19][20][21][22][23] have also been proposed but the preparation of high-quality GaN films via a chemical route is still a challenge. There have been reports on the synthesis of GaN powders 13,14 and GaN nanocrystals from different gallium precursors.…”

Homoleptic Gold Acetonitrile Complexes with Medium to Very Weakly Coordinating Counterions: Effect on Aurophilicity?

“…The IR and Raman spectra of 2 b clearly show the absence of the [NO] + stretching frequency of the starting material, indicating a complete reaction (see the Supporting Information). The observation of the symmetric breathing mode of [GaCl 4 ] − at =339 cm −1 in the Raman spectrum proves that it is more comparable with weakly coordinated salts like [NH 4 ] + [GaCl 4 ] − ( =342 cm −1 ) . More coordinating cations induce blueshifts, like in Li + [GaCl 4 ] − ( =348 cm −1 ) or the starting material [NO] + [GaCl 4 ] − ( =350 cm −1 ).…”

“…The observation of the symmetric breathing mode of [GaCl 4 ] À at ñ = 339 cm À1 in the Raman spectrum provest hat it is more comparable with weakly coordinated salts like [NH 4 ] + [GaCl 4 ] À (ñ = 342 cm À1 ). [51] More coordinating cations induce blueshifts, like in Li + [GaCl 4 ] À (ñ = 348 cm À1 )o rt he starting material[NO] + [GaCl 4 ] À (ñ = 350 cm À1 ).…”