Enhancement of optical extraction efficiency in white LED package with quantum dot phosphors and air-gap structure

Min Ho Shin, Hyun Guk Hong, Hyo Jun Kim, Young Joo Kim

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

An efficient package configuration for a white-light-emitting diode based on quantum dot (QD) phosphors was proposed and fabricated with a polymer lens, remote QD polymer layers, and an air-gap structure. The optical extraction efficiency of the newly proposed air-gap structure showed enhancements of 33.0% by simulation and 29.7% by experiment as compared with that of a remote layer-by-layer QD structure without an air gap. This enhancement comes from the fact that some reemitted and scattered light from QDs can be reflected effectively by total internal reflection at the interface between the QD polymer layer and air to reduce the absorption loss in the package.

Original languageEnglish
Article number052101
JournalApplied Physics Express
Volume7
Issue number5
DOIs
Publication statusPublished - 2014 May

Fingerprint

Phosphors
Semiconductor quantum dots
phosphors
Light emitting diodes
light emitting diodes
quantum dots
augmentation
air
Air
polymers
Polymers
Lenses
lenses
configurations
simulation
Experiments

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

@article{ede5f7b3111940febcbc929d6e3561b6,
title = "Enhancement of optical extraction efficiency in white LED package with quantum dot phosphors and air-gap structure",
abstract = "An efficient package configuration for a white-light-emitting diode based on quantum dot (QD) phosphors was proposed and fabricated with a polymer lens, remote QD polymer layers, and an air-gap structure. The optical extraction efficiency of the newly proposed air-gap structure showed enhancements of 33.0{\%} by simulation and 29.7{\%} by experiment as compared with that of a remote layer-by-layer QD structure without an air gap. This enhancement comes from the fact that some reemitted and scattered light from QDs can be reflected effectively by total internal reflection at the interface between the QD polymer layer and air to reduce the absorption loss in the package.",
author = "Shin, {Min Ho} and Hong, {Hyun Guk} and Kim, {Hyo Jun} and Kim, {Young Joo}",
year = "2014",
month = "5",
doi = "10.7567/APEX.7.052101",
language = "English",
volume = "7",
journal = "Applied Physics Express",
issn = "1882-0778",
publisher = "Japan Society of Applied Physics",
number = "5",

}

Enhancement of optical extraction efficiency in white LED package with quantum dot phosphors and air-gap structure. / Shin, Min Ho; Hong, Hyun Guk; Kim, Hyo Jun; Kim, Young Joo.

In: Applied Physics Express, Vol. 7, No. 5, 052101, 05.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Enhancement of optical extraction efficiency in white LED package with quantum dot phosphors and air-gap structure

AU - Shin, Min Ho

AU - Hong, Hyun Guk

AU - Kim, Hyo Jun

AU - Kim, Young Joo

PY - 2014/5

Y1 - 2014/5

N2 - An efficient package configuration for a white-light-emitting diode based on quantum dot (QD) phosphors was proposed and fabricated with a polymer lens, remote QD polymer layers, and an air-gap structure. The optical extraction efficiency of the newly proposed air-gap structure showed enhancements of 33.0% by simulation and 29.7% by experiment as compared with that of a remote layer-by-layer QD structure without an air gap. This enhancement comes from the fact that some reemitted and scattered light from QDs can be reflected effectively by total internal reflection at the interface between the QD polymer layer and air to reduce the absorption loss in the package.

AB - An efficient package configuration for a white-light-emitting diode based on quantum dot (QD) phosphors was proposed and fabricated with a polymer lens, remote QD polymer layers, and an air-gap structure. The optical extraction efficiency of the newly proposed air-gap structure showed enhancements of 33.0% by simulation and 29.7% by experiment as compared with that of a remote layer-by-layer QD structure without an air gap. This enhancement comes from the fact that some reemitted and scattered light from QDs can be reflected effectively by total internal reflection at the interface between the QD polymer layer and air to reduce the absorption loss in the package.

UR - http://www.scopus.com/inward/record.url?scp=84904636580&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84904636580&partnerID=8YFLogxK

U2 - 10.7567/APEX.7.052101

DO - 10.7567/APEX.7.052101

M3 - Article

AN - SCOPUS:84904636580

VL - 7

JO - Applied Physics Express

JF - Applied Physics Express

SN - 1882-0778

IS - 5

M1 - 052101

ER -