研究目的
Investigating the feasibility and potential of a light-controlled cascode (LCC) and light-controlled supercascode (LCSC) as power electronic devices that can be turned on and off by optical excitation.
研究成果
The feasibility of a light-controlled cascode (LCC) and light-controlled supercascode (LCSC) as power electronic devices with optical turn-on and -off is demonstrated. Despite the slow switching behavior in initial experiments, the potential for faster switching with optimized photodiodes made from wide band gap semiconductor materials is highlighted. The scalability of blocking voltage and current capability through the use of wide band gap materials is also emphasized.
研究不足
The experimental set-ups show very slow switching behavior due to compromises in device selection. The lack of commercially available appropriate devices necessitated the use of discrete components and inversely used LEDs as photodiodes.
1：Experimental Design and Method Selection:
The study involves the design of a light-controlled cascode (LCC) and its extension to a light-controlled supercascode (LCSC) for optical turn-on and -off. Theoretical models and algorithms are employed to understand the operation principle.
2：Sample Selection and Data Sources:
The experimental set-ups use discrete devices due to the difficulty in purchasing appropriate normally-on GaN-HEMTs. A blue light emitting diode (LED) is used inversely as a photodiode.
3：List of Experimental Equipment and Materials:
Includes Si-MOSFETs, GaN-HEMTs, blue LEDs, resistors, zener diodes, and capacitors.
4：Experimental Procedures and Operational Workflow:
The set-up involves turning on and off the LCC and LCSC by optical excitation, measuring switching behavior, and analyzing the results.
5：Data Analysis Methods:
The analysis includes measuring the switching behavior, gate-source voltage, and drain-source voltage to evaluate the performance of the LCC and LCSC.
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