Do you know what level TCAD st

Question

< U016ULGAUNM> < U016HSAH6AE> Do you know what level TCAD start with Do they begin with discrete Mawxell equations or an effective approximation or even a particle based model

jrsharp · Answer

< Paul Schulz> at the most basic level TCAD programs like Genius Sentaurus are drift diffusion solvers not Maxwell solvers

Paul Schulz · Answer

< jrsharp> Thanks

jrsharp · Answer

I think Sentaurus can do ray tracing simulations of optics not sure if it has a Maxwell solver though

jrsharp · Answer

if you re unfamilar with semiconductor modelling something like this might help <https link springer com chapter 10 1007 978 3 7091 6961 2 4>

Paul Schulz · Answer

< jrsharp> Thanks again It was more of a general question I m still trying to work out where we are with the software My background education is in Mathematical Physics Particle Physics but i ended up working in Linux System Administration Currently not working but I m keen to do something with the SkyWater 130nm

Paul Schulz · Answer

Hmm that looks interestig

jrsharp · Answer

< Paul Schulz> you re welcome The most basic models for semiconductors come from a kind of semi classical theory As devices become smaller and smaller models become more and more quantum mechanics related But it s been a while since I modelled semiconductor devices so my memory is rather vague slightly smiling face

Paul Schulz · Answer

I am currently listening to the ABC Australian Broadcaster radio and they are broadcasting the Canberra Press Club currently talking to CSIRO Boss Lots of talk about commercialisation philanthropy but nothing at all about Free and Open Source in innovation

jrsharp · Answer

Larry Marshall I don t think he s into open source slightly smiling face

Paul Schulz · Answer

Yeah nah

Paul Schulz · Answer

All for other people being philanthropic

jrsharp · Answer

He s crazy into hydrogen these days hydrogen airliners is gonna be the next thing slightly smiling face

Paul Schulz · Answer

I don t mind hydrogen Apparently we are producing too much solar power in South Australia when the sun shines and the win does blow insufficient load having a hydrogen plant that can use the surplus would be ideal or some other switchable load rather than the discussion about de rating wind and turning off home solar remotely

jrsharp · Answer

If only the Morrison government believed in climate change eh

Paul Schulz · Answer

Yeah even a dose of common good would be nice

Paul Schulz · Answer

Where are you

jrsharp · Answer

Would you believe Hobart slightly smiling face

Paul Schulz · Answer

Good on you Adelaide here

jrsharp · Answer

I consider myself quite lucky as I m originally from Melbourne Wouldn t want to be there now

jrsharp · Answer

Adelaide is a nice place I like SA wines

Paul Schulz · Answer

I had to go to Brisbane 3 weeks ago for my Dad funeral I was in the area Ipswitch where the two girls ended up

Paul Schulz · Answer

SA Wines are awesome

jrsharp · Answer

Oh no did you have to quarantine

Paul Schulz · Answer

No I got out before that came in

Paul Schulz · Answer

Went to get a test but was going to have to wait 3 hrs The ABC then published more details about where they went which was nowhere near where I had been thank goodness

Paul Schulz · Answer

I left and isolated as well as I could at home No symtoms of anything

jrsharp · Answer

Well that s a relief

jrsharp · Answer

What kind of ASIC are you hoping to produce

Paul Schulz · Answer

and no one around me has got sick just in case I was non symtomatic

Paul Schulz · Answer

Good question

Paul Schulz · Answer

I was thinking of something for a conference badge but have been asking around

jrsharp · Answer

That would be cool

Paul Schulz · Answer

Someone I know wants an LED driver for their lego trains With current limiting and monitoring

Paul Schulz · Answer

Something IoT related would be good a LoRaWAN sensor of some description low power

jrsharp · Answer

Those are interesting ideas

Paul Schulz · Answer

I was struggling to get into it but it s still early days

jrsharp · Answer

From my point of view I can t do anything without the device models

Paul Schulz · Answer

I would also love to see some implementations on some historical systems eg transputer lisp machine

Paul Schulz · Answer

What are you after

jrsharp · Answer

For example I put a simple verilog design through the OpenLane tool but when I reviewed the netlist I was sceptical about the results and without device models I can t do functional verification or SPICE

Paul Schulz · Answer

Oh yes a large 8x8 coincidence detector for a muon detector

jrsharp · Answer

That would be cool

Paul Schulz · Answer

Now OpenLane can that be used to produce arrays of cells

jrsharp · Answer

It s a RTL to GDS compiler for digital logic

Paul Schulz · Answer

or is OpenLane more here is a function implement it in silicon

Paul Schulz · Answer

Ok

jrsharp · Answer

yes it takes RTL register transfer logic level language and converts it to a digital circuit

Paul Schulz · Answer

I finally found the technology file in open pdks slightly smiling face Now my spice looks a lot better

Paul Schulz · Answer

Via a tutorial video yeaterday

Paul Schulz · Answer

Just need to find it again

jrsharp · Answer

Cool

Paul Schulz · Answer

Thanks for the chat

jrsharp · Answer

No problem

jrsharp · Answer

just message me if you have any questions about semiconductor theory

Paul Schulz · Answer

Thanks I m adding you to my usefule people list

Paul Schulz · Answer

I WILL have a bunch of questions