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@article{2e07c71071114a72bbc8adacbc525d55,
title = "Antireflective sub-wavelength structures for improvement of the extraction efficiency and color rendering index of monolithic white light-emitting diode",
publisher = "Optical Society of America",
author = "Yiyu Ou and Corell, {Dennis Dan} and Carsten Dam-Hansen and Petersen, {Paul Michael} and Haiyan Ou",
note = "This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=oe-19-S2-A166. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.",
year = "2011",
doi = "10.1364/OE.19.00A166",
volume = "19",
number = "S2",
pages = "A166--A172",
journal = "Optics Express",
issn = "1094-4087",

}

RIS

TY - JOUR

T1 - Antireflective sub-wavelength structures for improvement of the extraction efficiency and color rendering index of monolithic white light-emitting diode

A1 - Ou,Yiyu

A1 - Corell,Dennis Dan

A1 - Dam-Hansen,Carsten

A1 - Petersen,Paul Michael

A1 - Ou,Haiyan

AU - Ou,Yiyu

AU - Corell,Dennis Dan

AU - Dam-Hansen,Carsten

AU - Petersen,Paul Michael

AU - Ou,Haiyan

PB - Optical Society of America

PY - 2011

Y1 - 2011

N2 - We have theoretically investigated the influence of antireflective sub-wavelength structures on a monolithic white light-emitting diode (LED). The simulation is based on the rigorous coupled wave analysis (RCWA) algorithm, and both cylinder and moth-eye structures have been studied in the work. Our simulation results show that a moth-eye structure enhances the light extraction efficiency over the entire visible light range with an extraction efficiency enhancement of up to 26 %. Also for the first time to our best knowledge, the influence of sub-wavelength structures on both the color rendering index (CRI) and the correlated color temperature (CCT) of the monolithic white LED have been demonstrated. The CRI of the monolithic white LED could be improved from 92.68 to around 94 by applying a cylinder structure, and the CCT could be modified in a very large range with appropriate design of the cylinder structure.

AB - We have theoretically investigated the influence of antireflective sub-wavelength structures on a monolithic white light-emitting diode (LED). The simulation is based on the rigorous coupled wave analysis (RCWA) algorithm, and both cylinder and moth-eye structures have been studied in the work. Our simulation results show that a moth-eye structure enhances the light extraction efficiency over the entire visible light range with an extraction efficiency enhancement of up to 26 %. Also for the first time to our best knowledge, the influence of sub-wavelength structures on both the color rendering index (CRI) and the correlated color temperature (CCT) of the monolithic white LED have been demonstrated. The CRI of the monolithic white LED could be improved from 92.68 to around 94 by applying a cylinder structure, and the CCT could be modified in a very large range with appropriate design of the cylinder structure.

UR - http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-102-A166

U2 - 10.1364/OE.19.00A166

DO - 10.1364/OE.19.00A166

JO - Optics Express

JF - Optics Express

SN - 1094-4087

IS - S2

VL - 19

SP - A166-A172

ER -