Praying Mantis Diffuse Reflectance Accessory
Praying Mantis Diffuse Reflectance Accessory
Praying Mantis Diffuse Reflectance Accessory
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Band Gap in Semiconductors<br />
• Metal<br />
• Band gap = zero<br />
• Conductor<br />
Energy<br />
conduction band<br />
valence band<br />
• Semiconductor<br />
• Small band gap<br />
• External influence such as applied<br />
voltage or photon of correct energy<br />
can promote electrons from valence<br />
to conduction band<br />
Energy<br />
conduction band<br />
Small band gap<br />
valence band<br />
conduction band<br />
• Insulator<br />
• Electrons cannot get into<br />
conduction band<br />
Energy<br />
Large band gap<br />
valence band<br />
Erich Heiden UV/Vis Salesmanager<br />
34
Change language