Grain boundary electrical region is produced in varistor, The cofficient of nonlinear resistivity is computed according to the current-controlling-charge theory, and computation results are agree with experiments.

But when measuring minority lifetime,only few papers have reported the influence of carrier recombination in the space charge region on minority carrier lifetime in the base region of solar cells.

On the basis of calculated results, the bias voltage dependence of the space charge region near the MS interface and its effects on the currentvoltage (I-V) characteristics of this structure are analyzed.

Based on the studying of the AlGaAs/GaAs HBT E M model DC parameters which we have done, the base currents of the HBT are studied, and especially, the B E junction space charge region(SCR) recombination currents and the base surface recombination currents are calculated, which are important components of the base currents at a small DC base.

The cathode fall region is divided into two sub zones: the ionization zone ( IZ ) and the space charge zone ( SCZ ).

Divided two space-charge regions of different dielectric constant inside plant cell membrane, a model was built for ion transmembrane transport,.

In designing DC XLPE joints,the suppression of interfacial space charge is the most important,which depends on the reasonable permittivity and conductivity coordination of the two insulations.