Accession Number:

ADA143552

Title:

Formation of Electron-Hole Pairs in a Semiconductor by Vibrationally-Excited Molecules.

Descriptive Note:

Technical rept.,

Corporate Author:

ROCHESTER UNIV NY DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1984-07-01

Pagination or Media Count:

43.0

Abstract:

Both one-dimensional and three-dimensional models are presented for the collision of a vibrationally-excited molecule with a semiconductor surface, where the transfer of vibrational energy leads to the formation of electron-hole pairs. The transition probability P is calculated as a function of the molecule-surface distance for real two systems, HC1 InSb and HC1 PbSe, as well as for some model systems with different values of parameters. While P generally increases as the distance decreases, there are some minima at intermediate distances. The overall probability is obtained as an approximate integral of P over the distance, and for thermal collisions values of a few percent are obtained. Such values are high enough for an experimental observation of electrical conductivity due to electron-hole pair formation. Author

Subject Categories:

  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE