Songbek Che

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Fast switching operation of power electronics systems is significantly advantageous for reducing volume of passive components and increasing power density in the systems. Next generation power devices, such as GaN gate-injection transistor (GIT), are promising for high frequency operations and isolated gate driving is also highly recommended owing to its(More)
Light extraction efficiency has become first order design constraint for LEDs and its enhancement has always been a challenge for researchers. This affects the life of LEDs as well as optical output and various techniques for its enhancement have been reported. Methods for maximizing the efficiency of LEDs are typically based on enhancement of internal and(More)
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