Design of binder-free phosphor paste for warm white LEDs

Seok Bin Kwon; Seong Guk Jeong; Seung Hee Choi; Jung Hyeon Yoo; Woo Seok Yang; Jin Sun Yoo; Young Hyun Song; Dae Ho Yoon

doi:10.1016/j.optmat.2018.06.042

Design of binder-free phosphor paste for warm white LEDs

Seok Bin Kwon, Seong Guk Jeong, Seung Hee Choi, Jung Hyeon Yoo, Woo Seok Yang, Jin Sun Yoo, Young Hyun Song, Dae Ho Yoon

Department of Advanced Materials Science and Engineering

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

8 Scopus citations

Abstract

Cerium-doped yttrium aluminum garnet (YAG: Ce) is used to convert blue light which is emitted from InGaN-based LED chip for white light. In this study, the phosphor paste was prepared using monodispersed spherical YAG: Ce phosphor synthesized by co-precipitation based on one-pot synthesis. Also, orange-red emitting Sr₂Si₅N₈:Eu²⁺ (SSN: Eu) phosphor was added to confirm the change in optical characteristics. Alpha terpineol was used as a paste solvent because it enabled easy screen-printing. Phosphor paste films for optoelectronic devices were prepared by coating on a glass substrate using a doctor blade method. We compared the conversion efficacy, color rendering index (CRI), and correlated color temperature (CCT) of YAG: Ce which is added to various amounts of SSN: Eu. We measured scanning electron microscopy (SEM) images to confirm the difference of porosity between, depending on binder addition.

Original language	English
Pages (from-to)	184-188
Number of pages	5
Journal	Optical Materials
Volume	84
DOIs	https://doi.org/10.1016/j.optmat.2018.06.042
State	Published - Oct 2018

Keywords

General illumination
Light emitting diode
Phosphor paste
SrSiN: Eu
YAlO: Ce

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10.1016/j.optmat.2018.06.042

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@article{31019d010daf4a0eb25f038674df500c,

title = "Design of binder-free phosphor paste for warm white LEDs",

abstract = "Cerium-doped yttrium aluminum garnet (YAG: Ce) is used to convert blue light which is emitted from InGaN-based LED chip for white light. In this study, the phosphor paste was prepared using monodispersed spherical YAG: Ce phosphor synthesized by co-precipitation based on one-pot synthesis. Also, orange-red emitting Sr2Si5N8:Eu2+ (SSN: Eu) phosphor was added to confirm the change in optical characteristics. Alpha terpineol was used as a paste solvent because it enabled easy screen-printing. Phosphor paste films for optoelectronic devices were prepared by coating on a glass substrate using a doctor blade method. We compared the conversion efficacy, color rendering index (CRI), and correlated color temperature (CCT) of YAG: Ce which is added to various amounts of SSN: Eu. We measured scanning electron microscopy (SEM) images to confirm the difference of porosity between, depending on binder addition.",

keywords = "General illumination, Light emitting diode, Phosphor paste, SrSiN: Eu, YAlO: Ce",

author = "Kwon, \{Seok Bin\} and Jeong, \{Seong Guk\} and Choi, \{Seung Hee\} and Yoo, \{Jung Hyeon\} and Yang, \{Woo Seok\} and Yoo, \{Jin Sun\} and Song, \{Young Hyun\} and Yoon, \{Dae Ho\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = oct,

doi = "10.1016/j.optmat.2018.06.042",

language = "English",

volume = "84",

pages = "184--188",

journal = "Optical Materials",

issn = "0925-3467",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Design of binder-free phosphor paste for warm white LEDs

AU - Kwon, Seok Bin

AU - Jeong, Seong Guk

AU - Choi, Seung Hee

AU - Yoo, Jung Hyeon

AU - Yang, Woo Seok

AU - Yoo, Jin Sun

AU - Song, Young Hyun

AU - Yoon, Dae Ho

PY - 2018/10

Y1 - 2018/10

N2 - Cerium-doped yttrium aluminum garnet (YAG: Ce) is used to convert blue light which is emitted from InGaN-based LED chip for white light. In this study, the phosphor paste was prepared using monodispersed spherical YAG: Ce phosphor synthesized by co-precipitation based on one-pot synthesis. Also, orange-red emitting Sr2Si5N8:Eu2+ (SSN: Eu) phosphor was added to confirm the change in optical characteristics. Alpha terpineol was used as a paste solvent because it enabled easy screen-printing. Phosphor paste films for optoelectronic devices were prepared by coating on a glass substrate using a doctor blade method. We compared the conversion efficacy, color rendering index (CRI), and correlated color temperature (CCT) of YAG: Ce which is added to various amounts of SSN: Eu. We measured scanning electron microscopy (SEM) images to confirm the difference of porosity between, depending on binder addition.

AB - Cerium-doped yttrium aluminum garnet (YAG: Ce) is used to convert blue light which is emitted from InGaN-based LED chip for white light. In this study, the phosphor paste was prepared using monodispersed spherical YAG: Ce phosphor synthesized by co-precipitation based on one-pot synthesis. Also, orange-red emitting Sr2Si5N8:Eu2+ (SSN: Eu) phosphor was added to confirm the change in optical characteristics. Alpha terpineol was used as a paste solvent because it enabled easy screen-printing. Phosphor paste films for optoelectronic devices were prepared by coating on a glass substrate using a doctor blade method. We compared the conversion efficacy, color rendering index (CRI), and correlated color temperature (CCT) of YAG: Ce which is added to various amounts of SSN: Eu. We measured scanning electron microscopy (SEM) images to confirm the difference of porosity between, depending on binder addition.

KW - General illumination

KW - Light emitting diode

KW - Phosphor paste

KW - SrSiN: Eu

KW - YAlO: Ce

UR - https://www.scopus.com/pages/publications/85056350236

U2 - 10.1016/j.optmat.2018.06.042

DO - 10.1016/j.optmat.2018.06.042

M3 - Article

AN - SCOPUS:85056350236

SN - 0925-3467

VL - 84

SP - 184

EP - 188

JO - Optical Materials

JF - Optical Materials

ER -

Design of binder-free phosphor paste for warm white LEDs

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Keywords

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