能带混合量子阱的触发功能和异质谷间转移电子放大器件的研究

运用MonteCarlo理论模拟、二极管除穿伏安特性、器件振荡性能和射频输入信号激励下的放大功能研究了异质谷间转移电子器件中能带混合量子阱的触发功能。理论和实验研究发现，当能带混合量子讲中没有产生足够的异质谷间转移电子效应时，即使有源层中加有足够的电场仍然不能产生振荡。异质谷间转移电子效应成为器件进行射频工作的必要条件。在适当设计的器件中，运用输入射频信号也能激励异质谷间转移电子效应而触发输出放大信号。应用这一原理研制成8mm波段工作的稳态放大器，解决了二极管稳态放大器中的自激振荡问题。最后讨论了利用能带混合量子讲的触发功能来制作新的三端器件和各类功能器件的可能性。

Investigation on Trigger Function of Band Mixing Quantum Well and Heterostructure Intervalley Transferred Electron Amplifying Devices

By using the Monte Carlo simulation,the diode tunnelling V-I characteristic behavior, the device oscillation performance and the device amplifying function stimulated by input signal, the trigger function of band mixing quantum well in heterostructure intervalley transferred electron devices are investigated- It is found through these theoretical and experimental works that the device is unable to oscillate when the heterostructure intervalley transferred electron effect isn ' t strong enough, even if the electric field in active layer is very strong. The heterostructure intervalley transferred electron effect is necessary for the device to oscillate. In the device designed properly,the heterostructure intervalley transferred electron effect can also be stimulated by an input rf signal to trigger the amplified signal. By applying this principle, a stable amplifier at 8 mm band without self stimulatting oscillation has been developed. Finally,the possibility of three-terminal and other functional devices using the trigger function of band mixing quantum well is discussed.