journal article·2024-11-01Open access

A comparative study of Schottky barrier heights and charge transport mechanisms in 3C, 4H, and 6H silicon carbide polytypes

Fayssal Mekaret, Abdelaziz Rabehi, Baya Zebentout, Shahrazade Tizi, Abdelmalek Douara, Stefano Bellucci, Mawloud Guermoui, Zineb Benamara, El-Sayed M. El-kenawy, Marwa M. Eid, Amel Ali Alhussan

AIP Advances· Volume 14· Issue 11

Abstract

This study undertakes a comparative analysis of Schottky diodes using three prominent SiC polytypes (3C, 4H, and 6H). The comparison involves meticulous calculations of the Schottky barrier resulting from the metal/SiC interface for each polytype assessed in both practical and theoretical scenarios. Specifically, the barrier height (ΦB) is systematically plotted against the metal work function (ΦM) across a range of metal work functions from 3.65 to 5.65 eV. Furthermore, the investigation extends to the saturation currents of three distinct charge transport models for each SiC polytype: thermionic current (TE), thermionic field emission, and field emission. Initial analyses plot saturation currents as a function of concentration within a temperature range of 100–500 K. Subsequent examinations plot saturation currents as a function of temperature across a concentration gradient from 1014 to 1020 cm−3. The comparison between the activation energy and thermal energy at standard room temperature (T = 300 K) yielded results consistent with theoretical predictions, affirming the robustness and applicability of each model within its dominant range.
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Research context

OpenAlex topics: Semiconductor materials and interfaces · Semiconductor materials and devices · Advancements in Semiconductor Devices and Circuit Design

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Applied Microelectronics Laboratory (AMEL), Electronics Department, Faculty of Technology, Djillali Liabes University of Sidi Bel Abbes 1 , BP 89, 22000 Sidi Bel Abbes,

Telecommunications and Smart Systems Laboratory, University of Djelfa 2 , P.O. Box 3117, Djelfa 17000,

Faculty of Science and Technology, Tissemsilt University 3 , 38000 Tissemsilt,

INFN-Laboratori Nazionali di Frascati 4 , Via E. Fermi 54, 00044 Frascati,

Centre de Développement des Energies Renouvelables, Unité de Recherche Appliquée en Energies Renouvelables, URAER, CDER 5 , Ghardaïa 47133,

School of ICT, Faculty of Engineering, Design and Information & Communications Technology (EDICT), Bahrain Polytechnic 6 , P.O. Box 33349, Isa Town,

Jadara University Research Center, Jadara University 7 , P.O. Box 733, Irbid 21110,

Department of Communications and Electronics, Delta Higher Institute of Engineering and Technology 8 , Mansoura 35111,

9 Applied Science Research Center. Applied Science Private University, Amman, Jordan

Faculty of Artificial Intelligence, Delta University for Science and Technology 10 , Mansoura,

Department of Computer Sciences, College of Computer and Information Sciences, Princess Nourah Bint Abdulrahman University 11 , P.O. Box 84428, Riyadh 11671,

Funding

Princess Nourah Bint Abdulrahman University

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