Effect of Relaxation Time on Electron Transport Properties in Double-Barrier Structures

Dai Zhenhong; Ni Jun

Chin. J. Semicond. > 2006, Volume 27 > Issue 4 > 604-608

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Effect of Relaxation Time on Electron Transport Properties in Double-Barrier Structures

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Abstract: Using a time-dependent quantum-kinetic simulation for the non-equilibrium electron transport properties of double-barrier devices,we have investigated and analyzed the effects of the relaxation time on electron transport properties in this kind of low dimensional structure.The results show that the relaxation time,which comes from the electron-phonon and electron-defect interactions,greatly affects the current-voltage curves,including the plateau-like gradient and hysteresis width of the current.

Key words: non-equilibrium, Wigner function, electron transport

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Received: 20 August 2015 Revised: Online: Published: 01 April 2006

Using a time-dependent quantum-kinetic simulation for the non-equilibrium electron transport properties of double-barrier devices,we have investigated and analyzed the effects of the relaxation time on electron transport properties in this kind of low dimensional structure.The results show that the relaxation time,which comes from the electron-phonon and electron-defect interactions,greatly affects the current-voltage curves,including the plateau-like gradient and hysteresis width of the current.

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