Negative and positive electroluminescence from a compensated p -type germanium in terahertz frequencies

P. K. Chung*, J. M. Lin, S. T. Yen, T. H. Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Negative luminescence (NL) and positive luminescence in terahertz frequencies were observed from a compensated p -type Ge under various levels of pulse excitations at cryogenic temperatures. The NL spectra accompanying an S -type negative differential resistance phenomenon were attributed to the reduced emission transitions from the excited states to the ground states of the acceptors during the excitation. A possible excitation mechanism is also presented according to the measured data.

Original languageEnglish
Article number241106
JournalApplied Physics Letters
Volume91
Issue number24
DOIs
StatePublished - 20 Dec 2007

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