3-D device matrix approach: A new algorithm for plotting energy band diagrams in semiconductors

Energy band diagram is one of the important results produced by a device simulator. In order to provide more flexibility and emphasis over this domain, an algorithm is presented which can be used to draw the device band diagram in any plane in either direction for a user specified biasing conditions. Algorithm uses a three dimensional matrix of the device, which is reduced to a two dimensional matrix and subsequently into a vector, after plane and line selection by user. Basics of device level tool development are highlighted through this approach. This work is useful to the students and device level engineers, offering them an interactive and flexible way to draw band diagram anywhere in the device. The algorithm implementation is modular and matrix based, which is done using MATLAB®.