论文部分内容阅读
本文报导了在流体静压力18000kg/cm~2的范围内,锗隧道二极管伏安特性随压力变化的实验结果。测量了十六只锗隧道二极管的峯值电流Ip、峯值电压Vp、谷值电流Iv、谷值电压Vv、指数过剩电流Ix和反向隧道电流等参数与流体静压力的关系。结果表明:峯值电流Ip相对于压力的半对数作图为斜率不同的二段下降直线,在5000—9000kg/cm~2范围内有转折点;峯值电压随压力改变较小;在误差范围内谷值电压不随压力而改变。对于大部分被测管子,谷值电流与压力的关系类似于峯值电流与压力的关系;随着压力的增加,指数过剩电流区向高偏压方向移动。讨论了峯值电流及指数过剩电流随压力变化的规律和其他结果。认为转折点的存在是表明隧道跃迁机构的改变;由指数过剩电流区固定电流值测偏压随压力改变,求得禁带宽度的压力系数与其他方法获得的结果很好符合。
This paper reports the experimental results of volt-ampere characteristics of germanium tunnel diode with pressure in the range of hydrostatic pressure 18000kg / cm ~ 2. The peak current Ip, peak voltage Vp, valley current Iv, valley voltage Vv, exponential excess current Ix and reverse tunneling current of sixteen germanium tunnel diodes were measured and their relationship with hydrostatic pressure was measured. The results show that the half-logarithm of peak current Ip versus pressure is plotted as a two-stage descending straight line with different slopes with a turning point in the range of 5000-9000 kg / cm 2; the peak voltage changes little with pressure; and within the error range of valley The voltage does not change with pressure. For most of the tubes under test, the relationship between valley current and pressure is similar to the peak current versus pressure; as the pressure increases, the exponential excess current region moves toward high bias. The law of peak current and exponential excess current with pressure and other results are discussed. It is considered that the existence of the turning point indicates the change of the tunnel transition mechanism. The measured bias voltage changes with the change of the fixed current value in the exponential excess current region, and the pressure coefficient of the forbidden band width is in good agreement with the results obtained by other methods.