Abstract
Persistent IR photoconductivity in InAs/GaAs structures with layers of QDs with a p-and n-type conductivity was studied. At the initial stage, after the illumination is switched off, the relaxation of photoconductivity follows a logarithmic law. The relaxation time depends on temperature; it decreases as temperature increases. A simple model of photoconductivity relaxation, based on thermal activation of carriers from the QD layer, is proposed. The model is consistent with the experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 210-216 |
| Number of pages | 7 |
| Journal | Semiconductors |
| Volume | 40 |
| Issue number | 2 |
| DOIs | |
| State | Published - 1 Jan 2006 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics