materialscloud:2026.171
Published August 31, 2026 | Version v2
Software Open

GapExtractor v2.0

Creators

  • 1. ROR icon Benemérita Universidad Autónoma de Puebla

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Description

GapExtractor© v2.0 is a software program to determine the band gap energy (Eg) of semiconductor materials by analyzing their diffuse reflectance (DR) spectra. The implemented algorithm mimics the judgment of an expert analyst to identify the linear portions of Tauc plots and determine the corresponding Eg. This new algorithm is more flexible and robust than the one implemented in the previous version. In addition, an improved graphical user interface was designed for a more intuitive use. 

NOTE: This version of GapExtractor is distributed as a portable stand-alone application. No separate installation of Python libraries is necessary.  Please refer to the Software Installation Section of the User's Guide.

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md5:530902d7521cd1b13d01b385f63ca313
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md5:864633f9b48a89502a7391c89093f34e
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References

Journal reference (Paper in which the basic theory and algorithm are described)
Escobedo-Morales, A., Pedraza-Chan, M.S., Ruiz-López, I.I., Chigo Anota, E. Salazar-Villanueva, M., & Cortés-Arriagada D. (2026). Accurate determination of the band gap energy of non-translucent semiconductor materials through the Tauc method: Theoretical framework, limitations, technical hints, and automated algorithms. Next Materials, 10, 101412, doi: 10.1016/j.nxmate.2025.101412