Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach

Constantinos Valagiannopoulos; Pavlos G. Lagoudakis

doi:10.1364/JOSAB.35.001105

Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach

Constantinos Valagiannopoulos, Pavlos G. Lagoudakis

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.

Original language	English
Pages (from-to)	1105-1112
Number of pages	8
Journal	Journal of the Optical Society of America B: Optical Physics
Volume	35
Issue number	5
DOIs	https://doi.org/10.1364/JOSAB.35.001105
Publication status	Published - May 1 2018

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Atomic and Molecular Physics, and Optics

Access to Document

10.1364/JOSAB.35.001105

Fingerprint Dive into the research topics of 'Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach'. Together they form a unique fingerprint.

Cite this

@article{85773a349ff744a79d73371c68075eb1,

title = "Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach",

abstract = "Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.",

author = "Constantinos Valagiannopoulos and Lagoudakis, {Pavlos G.}",

year = "2018",

month = may,

day = "1",

doi = "10.1364/JOSAB.35.001105",

language = "English",

volume = "35",

pages = "1105--1112",

journal = "Journal of the Optical Society of America B: Optical Physics",

issn = "0740-3224",

publisher = "The Optical Society",

number = "5",

}

TY - JOUR

T1 - Photonic crystals for optimal color conversion in light-emitting diodes: A semi-analytical approach

AU - Valagiannopoulos, Constantinos

AU - Lagoudakis, Pavlos G.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.

AB - Based on effective-medium approximation, we analytically optimize the color conversion of GaN-based lightemitting p-n junctions, with respect to the size and spatial density of the used photonic crystals (PhCs), being filled with quantum dots (QDs). The model is two-dimensional and the incoherent excitation into the multiple quantum wells is mimicked by line sources of random electric and magnetic currents. Optimal operation is achieved by suppressing the radiation extraction for one visible color and simultaneously maximizing the emission for another color. For these cases, the field gets inevitably concentrated into the PhCs of QDs, where the conversion occurs, and the performance of the device is maximized. Several examples from these ultra-performing designs are provided, within which a secondary sweep can be applied by posing extra constraints related to cost or ease of fabrication.

UR - http://www.scopus.com/inward/record.url?scp=85046648773&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85046648773&partnerID=8YFLogxK

U2 - 10.1364/JOSAB.35.001105

DO - 10.1364/JOSAB.35.001105

M3 - Article

AN - SCOPUS:85046648773

VL - 35

SP - 1105

EP - 1112

JO - Journal of the Optical Society of America B: Optical Physics

JF - Journal of the Optical Society of America B: Optical Physics

SN - 0740-3224

IS - 5

ER -