Simulation of interface states effect on the scanning capacitance microscopy measurement of p–n junctions
Author(s)
Yang, J.
J Kong, F.
Griffith University Author(s)
Year published
2002
Metadata
Show full item recordAbstract
A two-dimensional numerical simulation model of interface states in scanning capacitance microscopy (SCM) measurements of p-n junctions is presented. In the model, amphoteric interface states with two transition energies in the Si band gap are represented as fixed charges to account for their behavior in SCM measurements. The interface states are shown to cause a stretch-out and a parallel shift of the capacitance-voltage characteristics in the depletion and neutral regions of p-n junctions, respectively. This explains the discrepancy between the SCM measurement and simulation near p-n junctions, and thus modeling interface ...
View more >A two-dimensional numerical simulation model of interface states in scanning capacitance microscopy (SCM) measurements of p-n junctions is presented. In the model, amphoteric interface states with two transition energies in the Si band gap are represented as fixed charges to account for their behavior in SCM measurements. The interface states are shown to cause a stretch-out and a parallel shift of the capacitance-voltage characteristics in the depletion and neutral regions of p-n junctions, respectively. This explains the discrepancy between the SCM measurement and simulation near p-n junctions, and thus modeling interface states is crucial for SCM dopant profiling of p-n junctions.
View less >
View more >A two-dimensional numerical simulation model of interface states in scanning capacitance microscopy (SCM) measurements of p-n junctions is presented. In the model, amphoteric interface states with two transition energies in the Si band gap are represented as fixed charges to account for their behavior in SCM measurements. The interface states are shown to cause a stretch-out and a parallel shift of the capacitance-voltage characteristics in the depletion and neutral regions of p-n junctions, respectively. This explains the discrepancy between the SCM measurement and simulation near p-n junctions, and thus modeling interface states is crucial for SCM dopant profiling of p-n junctions.
View less >
Journal Title
Applied Physics Letters
Volume
81
Issue
26
Subject
Physical Sciences
Engineering
Technology