Abstract
Microscopic photoluminescence images were measured on a dilute two-dimensional electron gas (2DEG) in an n-type modulation doped quantum well at 5 K. We observed electron-depletion regions surrounding metal electrodes formed by annealing of soldered indium or evaporated AuGeNi. The difficulty of forming an ohmic contact to a dilute 2DEG was probably due to the depletion region separating the 2DEG from the metal electrode.
Original language | English (US) |
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Pages (from-to) | 4496-4498 |
Number of pages | 3 |
Journal | Japanese Journal of Applied Physics |
Volume | 47 |
Issue number | 6 PART 1 |
DOIs | |
State | Published - Jun 13 2008 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Engineering
- General Physics and Astronomy
Keywords
- Depletion region
- Micro-PL imaging
- Modulation doping
- Ohmic contact
- Quantum well
- Two-dimensional electron gas