Characteristics of Micro-Size Light-Emitting Diode With Pentagon-Type Structure
Lijun Tan, Ruohe Yao, Kai Wang, Zijing Xie, Hong Wang
Abstract
We systemically investigated the effect of chip structures on the optical characteristics of micro-size LEDs. The total internal reflection (TIR) can be improved by selecting a suitable chip structure, thereby increasing the light efficiency. The saturation light output power (LOP) of the micro-size LED using pentagon-type structure is 44.78 mW, an increase of 6.08% compared with that of micro-size LED using circular-type structure. Simulation and experimental results indicate that chip structure of pentagon-type can effectively enhance the light extraction from the top or side of the micro-size LED.
Topics & Concepts
PentagonLight-emitting diodeOptoelectronicsChipMaterials scienceOpticsTotal internal reflectionDiodeSaturation (graph theory)Reflection (computer programming)PhysicsEngineeringComputer scienceElectrical engineeringGeometryMathematicsCombinatoricsProgramming languageSemiconductor Lasers and Optical DevicesGaN-based semiconductor devices and materialsPhotonic and Optical Devices