Selenium • Non-Metals

Primary XPS region: Se3d
Overlapping regions: Li1s, Mg2p
Binding energies of common chemical states:

Chemical stateBinding energy Se3d5/2
Se metal55.1 eV

 

Experimental information

N/A
 

Interpretation of XPS spectra
  • Se3d peak has overlapping spin-orbit components (Δ=0.86eV, intensity ratio=0.735).
    • Loss feature is located at 58.5 eV, visible in Se3d spectrum for metal.
  • Se LMM peaks (between 150eV–400eV) overlap with many XPS peaks from other elements and selenium’s own XPS peaks.

 

About this element

Symbol: Se
Date of discovery: 1817
Name origin: Greek selênê
Appearance: gray
Discoverer: Jöns Berzelius
Obtained from: refining of lead, copper, nickel

Melting point: 4904 K
Boiling point: 958 K
Density[kg/m3]: 4819
Molar volume: 16.42 × 10-6 m3/mol
Protons/Electrons: 34
Neutrons: 45
Shell structure: 2,8,18,6
Electron configuration: [Ar]3d104s24p4
Oxidation state: ±2,4,6
Crystal structure: monoclinic, hexagonal

Selenium was discovered by Jöns Jakob Berzelius 1817 and derives its name from the Greek word "selene", meaning moon. Although selenium is naturally found in a few rare minerals, it is primarily produced as a byproduct of copper refining. Selenium exists in two crystalline forms: crystalline monoclinic selenium is a deep red, while crystalline hexagonal selenium, the most stable form, is metallic gray. Selenium’s photovoltaic and photoconductive properties contribute to its use in photocopying, toning of photographic prints, photocells, light meters, and solar cells. A semi-conductive material below its melting point, selenium is also used in electronic applications.

 

Selenium • Non-Metals

Products

Nexsa G2 XPS

  • 微焦点 X 射线源
  • 独特的多技术选项
  • 用于单原子和簇离子深度剖析的双模式离子源
仪器卡片原件样式表

K-Alpha XPS

  • 高分辨率 XPS
  • 快速、高效、自动化的工作流程
  • 用于深度剖析的离子源

ESCALAB QXi XPS

  • 高光谱分辨率
  • 多技术表面分析
  • 丰富的样品制备和扩展选项

Contact us

Style Sheet for Global Design System
Style Sheet for Komodo Tabs
Style Sheet to change H3 to p with em-h3-header class
Style Sheet to change H2 style to p with em-h2-header class
产品表格规范样式表
Style Sheet for Global Design System
Style Sheet for Komodo Tabs
Style Sheet to change H3 to p with em-h3-header class
Style Sheet to change H2 style to p with em-h2-header class
产品表格规范样式表
Fix for left nav
支持和服务页脚样式表
字体样式表
卡片样式表

用于材料科学的
电子显微镜服务

为实现理想的系统性能,我们为您提供了由现场服务专家、技术支持部门和认证备件组成的全球网络支持。