= PADRE: 2D/3D devices under steady state, transient conditions or AC small-signal analysis =
Welcome to the PADRE development area. This project is for people
actively developing source code and documentation for this tool.
* GettingStarted - learn how to download the current code and make changes
* [[link(/report TicketSystem)]] - use trouble tickets to report problems and document ideas for future development
== What is PADRE? ==
[[image(padre.jpg)]]
PADRE is a 2D/3D simulator for electronic devices, such as MOSFET transistors. It can simulate physical structures of arbitrary geometry--including heterostructures--with arbitrary doping profiles, which can be obtained using analytical functions or directly from multidimensional process simulators such as Prophet.
For each electrical bias, PADRE solves a coupled set of partial differential equations (PDEs). A variety of PDE systems are supported which form a hierarchy of accuracy:
* electrostatic (Poisson equation)
* drift-diffusion (including carrier continuity equations)
* energy balance (including carrier temperature)
* electrothermal (including lattice heating)
[https://www.nanohub.org/simulation_tools/padre_tool_information Run PADRE] on the nanoHUB, right in your web browser!
== Limitations ==
[[image(mem.jpg)]]
PADRE allocates a large block of memory for computational use. The size of this array is in large part determined by the number of mesh points used in the simulation. By default the array dimension is 3.25 million elements. This size is sufficient to hold a mesh roughly 50x50. For larger problems the
{{{
OPTIONS SIZE.BUF=N
}}}
statement should be used, where N = array dimension. The regression formula is
{{{
N = (0.00218669025700062*Nmesh - 2.50459863758729) * 1000000.
}}}
== How do I use this site? ==
You can edit any of the pages in this site and add information. For more
instructions, see:
* WikiFormatting -- page formatting tips
* [wiki:Images Images] -- embedding images in wiki pages
* TracGuide -- Built-in Documentation
* [http://projects.edgewall.com/trac/wiki/TracFaq Trac FAQ] -- Frequently Asked Questions
* [http://projects.edgewall.com/trac/ The Trac project] -- Trac Open Source Project