Photoexcited carrier transport in GaAs/AlGaAs superlattices: A time of flight technique

✍ Scribed by Christophe Minot; Henri Le Person; François Alexandre; Jean-François Palmier

• Publisher: Elsevier Science
• Year: 1985
• Weight: 307 KB
• Volume: 134
• Category: Article
• ISSN: 0378-4363
• DOI: 10.1016/0378-4363(85)90397-3

✦ Synopsis

We present experiments and their interpretation on the electrical transport perpendicular to interfaces in undoped GaAs/AIGaAs superlattices inserted between n + contacts. The time evolution of the transient current in response to a picosecond exciting light pulse is discussed in terms of the band diagram of the structure and of the time of flight of carriers in the superlattice. The latter is closely related to the mobilities and conduction mechanism in GaAs/AIGaAs superlattices.