On the local injection of emitted electrons into micrograins on the surface of A{sup III}–B{sup V} semiconductors
- Saratov State University (Russian Federation)
The characteristics of the injection of electrons into a semiconductor from a microprobe–micrograin nanogap are investigated with a tunneling microscope in the mode of field emission into locally selected surface microcrystals of indium antimonide, indium arsenide, and gallium arsenide. The current mechanisms are established and their parameters are determined by comparing the experimental I–V characteristics and those calculated from formulas of current transport. The effect of limitation of the current into the micrograins of indium antimonide and indium arsenide which manifests itself at injection levels exceeding a certain critical value, e.g., 6 × 10{sup 16} cm{sup –3} for indium antimonide and 4 × 10{sup 17} cm{sup –3} for indium arsenide, is discovered. A physical model, i.e., the localization of electrons in the surface area of a micrograin due to their Coulomb interaction, is proposed.
- OSTI ID:
- 22645505
- Journal Information:
- Semiconductors, Journal Name: Semiconductors Journal Issue: 6 Vol. 50; ISSN SMICES; ISSN 1063-7826
- Country of Publication:
- United States
- Language:
- English
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