Kadmiumseleniidi

Kadmiumseleniidi is an inorganic compound with the chemical formula CdSe. It is a semiconductor material composed of cadmium and selenium atoms. It crystallizes in the cubic zinc blende or hexagonal wurtzite structures. Kadmiumseleniidi is a p-type semiconductor, meaning it has an excess of holes, which are positively charged charge carriers. It exhibits a direct band gap, which is important for its optical and electronic properties.

This material is known for its vibrant red color and is used in various applications. Historically, it was employed as a red pigment in paints and plastics, particularly in vivid shades. Its phosphorescent properties have also led to its use in phosphors for displays and fluorescent lighting. More recently, kadmiumseleniidi has gained attention for its potential in nanotechnology, particularly in the form of quantum dots. These nanocrystals exhibit size-dependent optical properties, emitting light at different wavelengths based on their size, making them useful in fields like bioimaging, solar cells, and LEDs. However, due to the toxicity of cadmium, its applications are subject to environmental regulations.