Abstract
We have experimentally studied the current–voltage characteristics and photoluminescence properties of multiple finite suparlattices (MFSLs) to define the condition of the formation of electric field domains (EFDs) in MFSLs system in which finite-superlattices (FSLs) are separated by thick barriers. We found that the formation of EFDs in MFSLs becomes disabled when the length of one-period of MFSLs becomes shorter. In addition, when the carrier density is very large, the formation of EFDs is also disabled. They can be attributed to the difficulty in isolating electric field concentration in each period of MFSLs.
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