期刊
JOURNAL OF APPLIED PHYSICS
卷 91, 期 11, 页码 9346-9353出版社
AMER INST PHYSICS
DOI: 10.1063/1.1468257
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We present an experimental and theoretical study of nonresonant detection of subterahertz radiation in GaAs/AlGaAs and GaN/AlGaN heterostructure field effect transistors. The experiments were performed in a wide range of temperatures (8-300 K) and for frequencies ranging from 100 to 600 GHz. The photoresponse measured as a function of the gate voltage exhibited a maximum near the threshold voltage. The results were interpreted using a theoretical model that shows that the maximum in photoresponse can be explained by the combined effect of exponential decrease of the electron density and the gate leakage current. (C) 2002 American Institute of Physics.
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