mobilitypy: Python package for mobility calculations in semiconductor heterostructures

AlN/AlGaN HEMT 2DEG mobilities	AlN/AlGaN HEMT lateral figure of merit	AlN/AlGaN HEMT lateral figure of merit (Temperature effect)

Systems

1. High electron mobility transistors (HEMTs)

Developers and contributors

Developer of mobilitypy : Badal Mondal

Maintainer of mobilitypy : Badal Mondal

mobilitypy Contributors: Contributors

• We sincerely thank each and every contributors for their valuable input and support.

Contact us: Email developer/maintainer team

• If you would like to contribute to the development of mobilitypy or request new functionality, please get in touch with us or open a pull request. We appreciate and respect our users' views and are committed to providing the best experience possible. Your feedback is highly valued. We will be happy to support your request ASAP.

Installation

1. Requirements

    1. python>=3.12
    2. numpy
    3. scipy
    4. matplotlib
    5. pathlib
    6. pandas

2. Installation using pip [not available yet]

    TBA

3. Installation from github repository

    git clone https://github.com/SemiconductorTransport/mobilitypy.git
    cd mobilitypy
    pip install .  

Or, without cloning

    pip install git+https://github.com/SemiconductorTransport/mobilitypy.git@specific_branch

Usage

Documentation: here Material database: here

The detailed documentation is available here. Explore the tutorial folder for example tutorials. Below are quick snippets showcasing what you can achieve with mobilitypy:

mobilitypy package:
    1. AlloyParams class
        1.1 get_alloy_params()
    2. Mobility2DCarrier class
        2.1 calculate_sheet_mobility()
        2.2 sc_rate_2_mobility()
        2.3 calculate_sheet_resitance()
        2.4 calculate_figure_of_merit()
    3. Plottings class
        3.1 plot_2d_carrier_mobilities()
        3.2 plot_2d()
        3.3 save_figure()
    4. PlotQuasi3DFuns class
        4.1 InterPolation()
        4.2 Plotq3D()

Tips and tricks:

FAQs: here

You can find a list of common user issues encountered while using this software here. We appreciate and respect our users' views and are committed to providing the best experience possible. Your feedback is highly valued.

Citations and references:

If you use mobilitypy in your work, please:

• State EXPLICITLY that you have used the mobilitypy code (or a modified version of it, if this is the case), for instance, adding a sentence like:

   "The mobility calculation has been performed using the mobilitypy code"
  

• Read and cite the following papers (and the appropriate references therein):

  *  The analytical mobility models are implemented based on the following publications:
  

1. J. Bassaler, J. Mehta, I. Abid, L. Konczewicz, S. Juillaguet, S. Contreras, S. Rennesson, S. Tamariz, M. Nemoz, F. Semond, J. Pernot, F. Medjdoub, Y. Cordier, P. Ferrandis, Al-Rich AlGaN Channel High Electron Mobility Transistors on Silicon: A Relevant Approach for High Temperature Stability of Electron Mobility. Adv. Electron. Mater. 2024, 2400069.
2. J. Zhang, Y. Hao, J. Zhang, J. Ni, The mobility of two-dimensional electron gas in AlGaN/GaN heterostructures with varied Al content. Sci. China Ser. F-Inf. Sci. 51, 780–789 (2008).
3. B. Mondal, P. Pampili, J. Mukherjee, D. Moran, P.J. Parbrook, S. Schulz, Interplay of carrier density and mobility in Al-rich (Al,Ga)N-channel HEMTs: Impact on high-power device performance potential. APL Electronic Devices 1, 026117 (2025). preprint arXiv:2502.13809

• Other publications that used mobilitypy:

TBA

2DEG mobility analytical models: Mobility2DEGAnalyticalModels.pdf

Bibliography file: Here is the bibliography file for your convenience.

Version release

Latest release: v1.0.0

Chekout out version release history here for the full list of updates and upgrades.

License

• GNU General Public License v3.0

Upcoming (TBD)

1. TBA