摘要
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.
原文 | English |
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文章編號 | 241106 |
期刊 | Applied Physics Letters |
卷 | 91 |
發行號 | 24 |
DOIs | |
出版狀態 | Published - 20 12月 2007 |