Hello Sir....
I just started working in Resistive RAM using high-k dielectric materials. I am trying to model the resistive switching behavior of high-k dielectrics in Silvaco and Sentaurus both. I have applied all the available models for tunneling, recombination and trapping in both software but the current is very low (almost in order of 10-20A).
Please suggest me anything if you have worked at these software that can we model oxygen vacancies in material files? or can we model redox reaction? How i can change the model parameters of a material? or how can i improve this current mentioned above using conventional models?
Please suggest...
Thank You
Dear Vibhu, I work on device fabrication and characterization. I do not have knowledge of these software.I'll recommend you to read the publications from Prof. yoshio Nishi's group in Stanford University.
https://nano.stanford.edu/
I hope this will help you.
Dear Vibhu,
You can also be used the "Memristor modeling papers" for your application because all resistive switching memories are memristor (L. Chua, 2011)
Following some of the papers and thesis, which can be useful for your application.
1. https://core.ac.uk/download/pdf/36569451.pdf
2. Compact Modeling Solutions for Oxide-Based Resistive Switching Memories (OxRAM)
3. http://www.silvaco.com/tech_lib_TCAD/simulationstandard/2008/apr_may_jun/a3/a3.html
4. http://aip.scitation.org/doi/full/10.1063/1.4901351
5. http://kodiak.ee.ucla.edu/cite/pdf/Modeling%20of%20Emerging%20Resistive%20Switching%20Based%20Memory%20Cells.pdf
All the best !!!
RRAM works because the atoms actually rearrange themselves to create or remove conducting paths. My guess is that Silvaco and Sentaurus models of the materials don't include that motion (but maybe now they do which would be cool) which is why your currents are so low. There are a variety of models with varying fidelities and complexity that try to capture that. I wrote number 4 above which I think is a pretty simple approach that still captures some of the complexity of the devices and the python code is available free online if that is useful to you:
Best of luck!
Data Python Code for Concentric Cylinders Simulation
Thank you Dongale Sir......
It helps me a lot.
I am trying the models like trap assisted tunneling and conventional mobility models of high k dielectric models.
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