2018年10月31日 · We probe the structural properties using XRD, TEM, and XPS. The XRD results confirmed the mixed-valence crystal structure where Au 1+ and Au 3+ co-exist in a unit cell, however, there was co-crystallization of both the α- and β-phase. The TEM showed belt-like nanostructures indicative of the 2D-type material.

1994年4月1日 · X-ray photoelectron spectroscopy (XPS) measurements on AuSe [9] show a splitting of the Au 4f peaks. This could be due to the presence of Au atoms with different valencies.

2024年11月1日 · Gold selenide (AuSe) is a multilayer compound that has yet to be thoroughly studied. The colloidal synthesis and characterization of gold selenide nanoparticles are described, emphasizing the effect of different gold-to-selenium precursor ratios and temperatures on the crystal structure and form.

XPS的Au4f核心能级谱仅显示Au +1氧化态，但是，使用Se3d核心能级谱，明显形成了AuSe（Au 1+ Au 3+ Se 2）。 使用DFT计算，模拟了α-和β-AuSe的拉曼光谱，并且仅发现正方形平面几何形状具有拉曼活性。

XPS 的 Au4f 核心能级光谱仅显示 Au1+ 氧化态，然而，使用 Se3d 核心能级光谱，AuSe (Au1+Au3+Se2) 的形成是明显的。 尽管如此，胶体方法导致未反应硒形式的杂质和由于还原封端剂而减少的 AuO，而与尝试的化学计量比无关。

Au4f核心能级的高分辨率XPS光谱显示了Au +离子的证据。 OLA-AuSe（90％），1DDT（23％）和OA（21％）中Au +离子的高总峰面积百分比表明，OLA是最佳的封端配体。 我们报告了较少探索的AuSe的合成，并研究了影响封端剂的方法。 油胺（OLA），1-十二烷硫醇（IDDT）和油酸（OA）在结构和表面上都有。 TEM显示，OLA和OA封端材料均呈长带状结构，而1DDT-AuSe则显示出纳米棒。 XRD衍射图和拉曼光谱显示出α- …

The strain-controlled structural, electronic, and optical characteristics of monolayer β-AuSe are systematically studied using first-principles calculations in this paper.

2019年3月14日 · Noble transition metal chalcogenide gold selenide is a relatively unexplored layered material. Herein, we report on the synthesis and characterization of polymorphic mixed-valence AuSe (Au 1+ Au 3+ Se 2) by varying the sequence of the addition of the precursors in a colloidal synthesis.

2010年2月1日 · The TEY XANES and XPS spectra implied the formation of predominant polysulfide species and metallic gold, while the transmission spectra showed Au–S bonding, the share of which increased with increasing molar Na 2 S/HAuCl 4 ratio in the reaction solution.

The strain-controlled structural, electronic, and optical characteristics of monolayer β-AuSe are systematically studied using first-principles calculations in this paper.