Bongmook Lee
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View article: Device Performance and Reliability of SiC CMOS up to 400°C
Device Performance and Reliability of SiC CMOS up to 400°C Open
This study evaluates the performance and reliability of SiC n-and p-MOSFETs across a temperature range from room temperature up to 400°C, focusing on field effect (FE) mobility and threshold voltage variations under high thermal and bias s…
View article: Novel Sequential Detection of NO2 and C2H5OH in SnO2 MEMS Arrays for Enhanced Selectivity in E-Nose Applications
Novel Sequential Detection of NO2 and C2H5OH in SnO2 MEMS Arrays for Enhanced Selectivity in E-Nose Applications Open
This study explores the surface chemistry and electrical responses of ultra-high-sensitivity SnO2 MEMS arrays to enable a novel sequential detection methodology for detecting nitrogen dioxide (NO2) and ethanol (C2H5OH) as a route to achiev…
View article: High Mobility 4H-SiC P-MOSFET via Ultrathin ALD B<sub>2</sub>O<sub>3</sub> Interlayer between SiC and SiO<sub>2</sub>
High Mobility 4H-SiC P-MOSFET via Ultrathin ALD B<sub>2</sub>O<sub>3</sub> Interlayer between SiC and SiO<sub>2</sub> Open
This article presents an innovative approach to achieve a high channel mobility for 4H-SiCp-MOSFET via dielectric-semiconductor interface engineering involving atomic layer deposition(ALD) of ultrathin B 2 O 3 and SiO 2 stacks. The applica…
View article: Wafer-scale characterization for two-dimensional material layers
Wafer-scale characterization for two-dimensional material layers Open
Logic devices based on two-dimensional (2D) channel materials require highly crystalline monolayers. Despite various laboratory-scale metrology techniques being intensively used to characterize 2D materials on small coupons, the developmen…
View article: Triboelectric nanogenerator based on electrospun molecular ferroelectric composite nanofibers for energy harvesting
Triboelectric nanogenerator based on electrospun molecular ferroelectric composite nanofibers for energy harvesting Open
An eco-friendly triboelectric nanogenerator constructed with molecular ferroelectric fiber mats offers a scalable and cost-effective solution for wearable electronics.
View article: A 400V Buck Converter Integrated with Gate- Drivers and Low-Voltage Control in a 25V- 600V Mixed-Mode SiC CMOS Technology
A 400V Buck Converter Integrated with Gate- Drivers and Low-Voltage Control in a 25V- 600V Mixed-Mode SiC CMOS Technology Open
This paper offers the first demonstration of the design and layout of a fully integrated power converter in a monolithic Silicon Carbide (SiC) technology. A 400V Buck Converter integrated with Gate-Drivers and Low-Voltage Control circuitry…
View article: SPICE Modeling and Circuit Demonstration of a SiC Power IC Technology
SPICE Modeling and Circuit Demonstration of a SiC Power IC Technology Open
Silicon carbide (SiC) power integrated circuit (IC) technology allows monolithic integration of 600V lateral SiC power MOSFETs and low-voltage SiC CMOS devices. It enables application-specific SiC ICs with high power output and work under …
View article: Monolithic Integration of Lateral HV Power MOSFET with LV CMOS for SiC Power IC Technology
Monolithic Integration of Lateral HV Power MOSFET with LV CMOS for SiC Power IC Technology Open
This paper reports the design and process flow for monolithic integration of lateral high voltage (HV) power MOSFET with low voltage (LV) CMOS circuits for SiC Power IC technology. The reported devices and circuits are fabricated on a N-/N…
View article: A Pipeline for Adaptive Filtering and Transformation of Noisy Left-Arm ECG to Its Surrogate Chest Signal
A Pipeline for Adaptive Filtering and Transformation of Noisy Left-Arm ECG to Its Surrogate Chest Signal Open
The performance of a low-power single-lead armband in generating electrocardiogram (ECG) signals from the chest and left arm was validated against a BIOPAC MP160 benchtop system in real-time. The filtering performance of three adaptive fil…
View article: Optimizing the energy balance to achieve autonomous self-powering for vigilant health and IoT applications
Optimizing the energy balance to achieve autonomous self-powering for vigilant health and IoT applications Open
With the right combination of disruptive features, such as battery free self-powered operation, multimodal sensing capability, comfort, wearability, and continuous data gathering leading to actionable information, the potential of autonomo…
View article: Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease
Low-Power Wearable Systems for Continuous Monitoring of Environment and Health for Chronic Respiratory Disease Open
We present our efforts toward enabling a wearable sensor system that allows for the correlation of individual environmental exposures with physiologic and subsequent adverse health responses. This system will permit a better understanding …