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Title: Space charge limited current in Schottky diode with single level traps
Authors: Kumar, Pankaj
Jain, Anubha
Shukla, Manju
Chand, Suresh
Keywords: Space charge limited current
Single level traps
Trap filled limit
Charge carrier transport
Schottky diode
Issue Date: Jun-2011
Publisher: NISCAIR-CSIR, India
Abstract: The space charge limited current (SCLC) in a Schottky diode with a finite injection barrier at the injecting contact and single level traps in the energy space has been investigated by mathematical modelling. Solution of coupled Poisson’s and continuity equations with non-zero Schottky barrier (<img src='' border=0>) leaded us to calculate the electric field [<i>F</i>(<i>x</i>)] and the charge carrier <i style="">p</i>(<i style="">x</i>) distribution in the sample. Considering the boundary conditions, the current density-voltage (<i style="">J-V</i>) characteristics have been calculated numerically. It is reported here that when Schottky barrier is not zero, <i style="">J-V</i> characteristics become Ohmic at infinitely large voltages. The expression of trap filled limit voltage (<i style="">V<sub>TFL</sub></i>) has also been derived. The effect of Schottky barrier on the SCLC current in semiconducting devices has been studied in the present paper.
Description: 406-409
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.49(06) [June 2011]

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