#Justpublished “First principles investigation of charge transition levels in monoclinic, orthorhombic, tetragonal and cubic crystallography phase of HfO2”

25 May #Justpublished “First principles investigation of charge transition levels in monoclinic, orthorhombic, tetragonal and cubic crystallography phase of HfO2”

We have just published a new paper about “First principles investigation of charge transition levels in monoclinic, orthorhombic, tetragonal and cubic crystallography phase of HfO2“, by MD Nur K. Alam, S. Clima, BJ O’Sullivan, B. Kaczer, G. Pourtois, M. Heyns, J. Van Houdt from our partner IMEC on the Journal of Applied Physics 129, 084102 (2021) | DOI; 10.1063/5.0033957. | Open Access.

Abstract: A first-principles study of native point defects in monoclinic, cubic, two different tetragonal, and five different orthorhombic phases of hafnia (HfO₂) is presented. They include vacancy of tri-coordinated and tetra-coordinated oxygen, metal vacancy, interstitial metal, and interstitial oxygen. Defect formation energy, trap depth, and relaxation energy upon optical excitation of defects are listed. The trap depth of oxygen vacancies shows little variation among different phases compared to other defects. Results of the trap depth are compared against measurements and found to have reasonable agreement.

Info: Nur K Alam, Md., Clima, S., O’Sullivan, B.J., Kaczer, B., Pourtois, G., Heynes, M., Van Houdt, J. (2021), “First principles investigation of charge transition levels in monoclinic, orthorhombic, tetragonal, and cubic crystallographic phases of HfO₂“, Journal of Applied Physics 129, 084102,2021, https://doi.org/10.1063/5.0033957

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