Niobium diselenide or niobium (IV) selenide is a layered transition metal dichalcogenide with formula NbSe2. Niobium diselenide is a lubricant, and a superconductor at temperatures below 7.2 K that exhibit a charge density wave (CDW).

二硒化铌 是一种层状的过渡金属硫属化物，化学式为NbSe 2。 二硒化铌是一种润滑剂，在低于7.2K的温度下具有 电荷密度波 （英语：charge density wave） （CDW）性质的超导体。 二硒化铌可以以几种形式结晶，并可以通过机械法剥离为 单原子层，这和其它过渡金属的硫属化物相似。 单层NbSe 2 展现出和块状材料不同的性质，如Ising超导性、量子金属钛及CDW的大程度增强。 [3] Number of NbSe 2 layers as a function of Se powder temperature during CVD. 二硒化铌晶 …

NbSe2 is Molybdenite-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is two-dimensional and consists of two NbSe2 sheets oriented in the (0, 0, 1) direction. Nb4+ is bonded to six equivalent Se2- atoms to form distorted edge-sharing NbSe6 pentagonal pyramids.

2017年8月30日 · Atomic-resolution scanning transmission electron microscope imaging reveals the atomic structure of the intrinsic point defects and grain boundaries in monolayer NbSe 2, and confirms the low...

We have studied the superconducting state of 2H-NbSe2 by scanning tunneling spectroscopy along two different crystal orientations, the c and the a/b axes. Along the c axis a large gap is dominant...

Single crystal fo rm: silver color, metallic luster; Structure type: layered, hexagonal, P6 3 /mmc; Air sensitivity: relatively stable; Exfoliation capability: very easy

We have studied the superconducting state of 2H-NbSe2 by scanning tunneling spectroscopy along two different crystal orientations, the c and the a/b axes. Along the c axis a large gap is dominant...

NbSe2 is Molybdenite-like structured and crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three NbSe2 sheets oriented in the (0, 0, 1) direction. Nb4+ is bonded to six equivalent Se2- atoms to form …

使用化学气相传输（CVT）技术合成二硒化铌（NbSe）晶体。 密度泛函理论（DFT）计算采用广义梯度近似（GGA）方法。 利用 Perdew-Burke-Ernzerhof (PBE) 赝势函数来强调 NbSe 六方 P6/mmc 对称结构晶相的结构、电学、弹性常数和光学特性。 此外，态密度 (DOS) 显示，在费米能级，Nb (3d) 态占主导地位，Se (5p) 和 Se (5 s) 态发挥次要作用。 能带结构证实了晶体的金 属性质，显示出导带和价带之间的重叠。

Tribological tests showed that when the concentration of NbSe2 was 2 wt%, it could reduce the COF and wear scar width by 23.5% and 12.8% under 150 N and 5 Hz, indicating 2 wt% NbSe2 doped ...