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2022•Japanese Journal of Applied PhysicsOpen access

Multi-colour GaN-based LEDs with trench structure

Garam Kim, Jang Hyun Kim, Sangwan Kim

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Abstract

Abstract Conventional white LEDs are implemented by converting part of the light generated from the blue multi-quantum well (MQW) into yellow light through a phosphor. However, in order to implement a white LED with higher efficiency, there is a need for a method capable of emitting multiple colours in GaN-based LED itself without a phosphor. In this study, the MQW is optimized through TCAD simulation and a trench structure is applied to implement a multi-colour LED.

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Abstract Conventional white LEDs are implemented by converting part of the light generated from the blue multi-quantum well (MQW) into yellow light through a phosphor. However, in order to implement a white LED with higher efficiency, there is a need for a method capable of emitting multiple colours in GaN-based LED itself without a phosphor. In this study, the MQW is optimized through TCAD simulation and a trench structure is applied to implement a multi-colour LED.

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Available abstract

Abstract Conventional white LEDs are implemented by converting part of the light generated from the blue multi-quantum well (MQW) into yellow light through a phosphor. However, in order to implement a white LED with higher efficiency, there is a need for a method capable of emitting multiple colours in GaN-based LED itself without a phosphor. In this study, the MQW is optimized through TCAD simulation and a trench structure is applied to implement a multi-colour LED.

Key concepts: Light-emitting diode, Phosphor, Optoelectronics, Trench, Materials science, White light, Optics, Blue light

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