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单词 Resonant tunneling diode
释义

Resonant tunneling diode

英语百科

Resonant-tunneling diode

A working mechanism of a resonant tunneling diode device and negative differential resistance in output characteristic. There is a negative resistance characteristic after the first current peak, due to a reduction of the first energy level below the source Fermi level with gate bias. (Left: band diagram; Center: transmission coefficient; Right: current–voltage characteristics). The negative resistance behavior shown in right figure is caused by relative position of confined state to source Fermi level and bandgap.
A double-barrier potential profile with a particle incident from left with energy less than the barrier height.
Typical structure of a Si/SiGe resonant interband tunneling diode
Band diagram of a typical
Si/SiGe resonant interband tunneling diode calculated by
Gregory Snider's 1D Poisson/Schrödinger Solver.

A resonant-tunneling diode (RTD) is a diode with a resonant-tunneling structure in which electrons can tunnel through some resonant states at certain energy levels. The current–voltage characteristic often exhibits negative differential resistance regions.

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更新时间:2025/6/22 12:41:52