Quantitative analysis of the trapping effect on terahertz AlGaN/GaN resonant tunneling diode

Quantitative analysis of the trapping effect on terahertz AlGaN/GaN resonant tunneling diode
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太赫兹AlGaN/GaN谐振隧道二极管俘获效应的定量分析

DOI:
10.1063/1.3650253
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发表时间:
2011-10
影响因子:
4
通讯作者:
Hao, Yue
Hao, Yue
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Yang, Lin'an;He, Hanbing;Mao, Wei;Hao, Yue

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报道了在极化AlGaN/GaN/AlGaN量子阱中引入深能级缺陷,在室温下模拟太赫兹AlGaN/GaN共振隧穿二极管(RTD).结果表明,当缺陷密度高于106 cm-2时,RTD的负微分电阻特性发生明显退化,这与最先进的GaN RTD的测量结果一致。在300 GHz附近,RTD振荡器的模拟也表明,由于电子捕获效应,射频功率和效率明显下降。
We report on a simulation for terahertz aluminum gallium nitride (AlGaN)/gallium nitride (GaN) resonant tunneling diode (RTD) at room temperature by introducing deep-level defects into the polarized AlGaN/GaN/AlGaN quantum well. Results show that an evident degradation in negative-differential-resistance characteristic of RTD occurs when the defect density is higher than ∼106 cm−2, which is consistent with the measurements of the state-of-the-art GaN RTDs. At around 300 GHz, the simulation for a RTD oscillator also demonstrates evident decreases of rf power and efficiency because of the electron trapping effect.
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发表时间: 2010-08
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