Space-charge-limited current in a film

Observation of Space-Charge-Limited Transport in InAs Nanowires

“…where 0 is a numerical constant of order unity [9]. For high aspect-ratio wires, the scaling factor induces a strong deviation from the bulk current density for which 9 / 8 .…”

Dark Conductivity in Semi-Insulating Crystals of CdTe:Sn

“…which is characteristic for the currents formed by injection of the carriers into an isolating material with two kinds of traps [8]. By plotting I(U) dependence in a double logarithmic scale, one can distinguish three sections characterized with different slopes and values of the exponent n ( Fig.…”

“…The concentration of traps is given by N t , g corresponds to the degeneration factor, ε is material's dielectric constant, and N c is effective density of states in the conduction band [8]. All the samples featured electronic conductivity [9], so that the latter expression is useful for finding concentration of electrons in weaklycompensated semiconductor [5,6]:…”

“…In such case it will be inappropriate to define the thermal activation energy E a directly from s(Т) measurements, because the obtained values may not correspond to really existing levels in the band gap. To check the relevancy of analysis, it is imperative to use additional methods, one of which focuses on measurements of space charge limited conduction (SCLC) [7,8]. Analysis of current-voltage curves (CVC) under SCLC provides information on local centers defining dark conductivity of high-resistive semiconductors.…”

Enhanced bipolar resistive switching behavior in polar Cr-doped barium titanate thin films without electro-forming process

“…The space charge limited conduction (SCLC) 34,35 mechanism was investigated for the resistive switching device, and log J vs. log E plot was well fitted to a straight line. The current density and applied electric field relationship in SCLC conduction mechanism can be expressed as below,…”