Publication: Lone-pair states as a key to understanding impact ionization in chalcogenide semiconductors
All || By Area || By YearTitle | Lone-pair states as a key to understanding impact ionization in chalcogenide semiconductors | Authors/Editors* | O. Rubel and D. Laughton |
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Where published* | J. Phys.: Condens. Matter |
How published* | Journal |
Year* | 2010 |
Volume | 22 |
Number | |
Pages | 355803 |
Publisher | |
Keywords | |
Link | http://www.tbrri.com/~orubel/publications/2010/J_Phys_Condens_Matter_v22_p355803_y2010.pdf |
Abstract |
Impact ionization of holes and domination of p-conductivity in chalcogenide semiconductors are attributed to a weak electronâphonon interaction inherent to lone-pair states. This argument is supported by first-principles calculations of an acoustical deformation potential in trigonal selenium. Results of the calculations reveal a strong dependence of the deformation potential on the excess energy of charge carriers. The latter is interpreted using a simple tight-binding model. |
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