Title: Electrical characteristics and deep-level admittance spectroscopies of low-temperature grown GaAs p-i-n structures
Authors: Chen, JF
Chen, NC
Wang, PY
Tsai, MH
National Chiao Tung University
Department of Electrophysics
Issue Date: 1-Feb-1997
Abstract: The properties of low-temperature grown GaAs are studied via the electrical characterization of p-i-n structures with part of the intrinsic layer grown at 300 degrees C. Comparisons are made between the low-temperature and normally grown samples. The current of the low-temperature sample is about two orders of magnitude higher than that of the normally grown sample in both forward and reverse bias. From temperature-dependent analysis, the leakage current of the low-temperature sample is contributed by the recombination current through defect levels around the midgap, from which a recombination lifetime of 9.4X10(-12) a was obtained. By using admittance spectroscopy we observed a dominant electron level at 0.60 eV with a corresponding capture cross section of 1.0x10(-13) cm(2) that was not observed in the normally grown sample; thus it is believed to be introduced by the As-rich low-temperature layer. (C) 1997 American Institute of Physics.
URI: http://hdl.handle.net/11536/731
ISSN: 0021-8979
Volume: 81
Issue: 3
Begin Page: 1255
End Page: 1258
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