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Open research questions in Silicon Carbide Semiconductor Technologies

81 unresolved questions extracted from the limitations and future-work sections of 299 Silicon Carbide Semiconductor Technologies papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Further study of the impact of gate voltage overshoot and voltage slopes on threshold voltage aging. Investigation of the effects of different gate resistance and switching frequency on the reliability of SiC MOSFETs.

    Peak Voltage and Switching Slope Dependency of Gate Switching Instability in SiC MOSFET · 2026 · DOI

  • The high density of interface states at the SiO2/SiC interface constrains the performance and reliability of MOSFET devices. The impact of NO PDA on the interface state density profile is not well understood.

    Calculation of the Whole Interface State Density Profile in SiO<sub>2</sub>/SiC Lateral MOSFETs · 2026 · DOI

  • Temperature-related reliability issues in SiC GTOs. Limited understanding of the thermal behavior of SiC GTOs. Difficulty in integrating a temperature sensor into a SiC GTO structure.

    Study of SiC Thyristors with Integrated Temperature Sensors · 2026 · DOI

  • Experimental verification of the proposed sensor is needed. Further studies on the optimization of the sensor's design and operating conditions are required.

    Study of SiC Thyristors with Integrated Temperature Sensors · 2026 · DOI

  • Further studies can be conducted to investigate the effect of different annealing temperatures on the Schottky barrier height. Research can be done to develop new materials and technologies that can improve the performance of Schottky-barrier diodes on 4H-SiC.

    Electrical Characterization of Mo-Carbide Schottky Contacts on 4H-SiC · 2026 · DOI

  • The paper identifies a need for further understanding of the relationship between annealing temperature and Schottky barrier height. The paper highlights the importance of studying the surface and interface electrical properties of Mo2C/4H-SiC contacts.

    Electrical Characterization of Mo-Carbide Schottky Contacts on 4H-SiC · 2026 · DOI

  • Further evaluation of the semi-SJ design using experimental methods. Investigation of the scalability of the semi-SJ design to higher voltage classes.

    Body Diode Performance of the 4H-SiC 3.3 kV Semi-SJ MOSFET · 2026 · DOI

  • The need for further improvements in device performance through Superjunction technology. The lack of assessment of SJ devices in terms of static performance and dynamic behavior.

    Body Diode Performance of the 4H-SiC 3.3 kV Semi-SJ MOSFET · 2026 · DOI

  • The low formation yield and lack of direct microscopic structural identification of modified divacancies have hindered progress. The oxygen-vacancy structure of these defects was not established before.

    High‐Yield Engineering and Identification of Oxygen‐Related Modified Divacancies in 4H‐SiC · 2026 · DOI

  • The need for efficient and reliable Bi-Directional Switches. The challenge of minimizing switching losses in power conversion systems. The concern of yield loss and manufacturing efficiency in monolithic integration.

    Comparative Study of 1.2kV 4H-SiC Bi-Directional MOSFET (BiD-MOS) Design Approaches: 2-Chip vs Monolithic Integration · 2026 · DOI

  • Further studies are needed to investigate the effect of swift heavy ion irradiation on the properties of SiC devices. Experimental studies are needed to validate the results of the simulations. The development of more advanced models that take into account the interactions of swift heavy ions with target atoms is needed.

    Swift heavy ion track formation in SiC films under high-temperature irradiation · 2026 · DOI

  • The influence of gate voltage overshoot and voltage slopes on threshold voltage aging is not well understood. The impact of Rg,off on the transition time and switching energy is not well studied.

    Peak Voltage and Switching Slope Dependency of Gate Switching Instability in SiC MOSFET · 2026 · DOI

  • However, the effect of the SiC film thickness on the formation and structure of SHI tracks over a wide range of irradiation temperatures remains unexplored.

    Swift heavy ion track formation in SiC films under high-temperature irradiation · 2026 · DOI

  • Energy loss and bipolar degradation issues in SiC MOSFETs. Lack of a unified behavioral model for SiC MOSFETs and JBSFETs. Complexity of modeling reverse recovery characteristics.

    A Unified Behavioral Model for 1.2-kV SiC MOSFETs and JBSFETs Covering Forward and Reverse Operations · 2026 · DOI

  • The paper does not provide a comprehensive comparison with other electrode designs. The experimental validation is limited to a specific setup and may not be generalizable.

    A Low-Capacitance Long-Strip Electrode Design for Fast-Switching Vertical SiC PCSS · 2026 · DOI

  • The trade-off between switching speed and optical absorption is a significant challenge in SiC PCSS devices. Prior work has focused on reducing carrier lifetime, but this method has limitations.

    A Low-Capacitance Long-Strip Electrode Design for Fast-Switching Vertical SiC PCSS · 2026 · DOI

  • Further experiments to increase the growth rate. Investigation of other alternative precursors for SiC growth. Application of the results to SiC-based quantum technology.

    Growth and Characterization of “IsoPure” Epitaxial Layers for Quantum Applications · 2026 · DOI

  • The need for alternative precursors to improve material quality and reduce costs in SiC processing. The lack of studies comparing different precursors for homoepitaxial 4H-SiC growth.

    Growth and Characterization of “IsoPure” Epitaxial Layers for Quantum Applications · 2026 · DOI

  • Further investigation of the effects of other factors on pit formation. Development of new technologies to eliminate surface pits. Application of the findings to other semiconductor materials and devices.

    Formation Mechanism and Reduction of Surface Pits on 4H-SiC Epitaxial Layer · 2026 · DOI

  • The high pulsed current required for evaluation is limited by the probe tip diameter. The simulation-only approach may not fully capture the complexity of the system.

    Depth-Dependent Suppression of Bipolar Degradation in 4H-SiC Diodes via Proton Implantation and Evaluation of Safe Operating Current Density Range · 2026 · DOI

  • Future research should investigate the long-term reliability of proton-implanted 4H-SiC diodes. The study's findings should be verified through experimental validation.

    Depth-Dependent Suppression of Bipolar Degradation in 4H-SiC Diodes via Proton Implantation and Evaluation of Safe Operating Current Density Range · 2026 · DOI

  • The challenge of poor doping concentration uniformity during the epitaxial growth of 200 mm 4H-SiC substrates. The difficulty of controlling multiple physical fields in epitaxial growth process, especially with respect to the thermal field and flow field.

    Development of High Concentration Uniformity Epitaxial Growth on 200 mm 4H-SiC Wafers · 2026 · DOI

  • Further studies are needed to validate the optimal source temperature distribution experimentally. The study's findings can be used as a basis for further research on PVT growth optimization.

    Numerical Simulation of Optimal Source Temperature Distribution in PVT Method for SiC Single Crystals · 2026 · DOI

  • The lack of ultra-pure feedstock material for high-quality SiC crystal growth. The need for a robust platform for next-generation PVT growth.

    Ultra-Pure SiC Source Material for Optical SiC Crystal Growth · 2026 · DOI

  • The high basal plane dislocation density in SiC crystals. The lack of thermal expansion coefficient matching between the crystal and the reactor components. The high thermal radiation emissivity of traditional graphite components.

    Growth of 8-Inch SiC Single Crystals with Low Basal Plane Dislocation Density · 2026 · DOI

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81 open questions have been extracted from the limitations and future-work passages of 299 Silicon Carbide Semiconductor Technologies papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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