Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots

Jaehoon Lim; Byeong Guk Jeong; Myeongjin Park; Jai Kyeong Kim; Jeffrey M. Pietryga; Young Shin Park; Victor I. Klimov; Changhee Lee; Doh C. Lee; Wan Ki Bae

doi:10.1002/adma.201403620

Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots

Jaehoon Lim, Byeong Guk Jeong, Myeongjin Park, Jai Kyeong Kim, Jeffrey M. Pietryga, Young Shin Park, Victor I. Klimov, Changhee Lee, Doh C. Lee, Wan Ki Bae

Los Alamos National Laboratory

Research output: Contribution to journal › Article

136 Citations (Scopus)

Abstract

The rapid advance and growth of the display industry has provided an impetus for the development of novel emissive materials for high-energy-efficiency light-emitting diodes (LED). Quantum dots (QD) offer narrow, size-tunable emission over the full visible wavelength region, and consequently have received particular attention as a class of high-color-purity fluorophores. However, PL lifetimes drastically decrease when QDs are assembled into compact films and decrease further within the actual devices, with a severity noticeably dependent on shell thickness. Intriguingly, this tendency is markedly similar to absolute PL QYs measured on the same samples using an integrating sphere spectrometer. Spectroscopic analysis of the QLEDs demonstrates the influence of nonradiative recombination processes on the overall device characteristics.

Original language	English
Pages (from-to)	8034-8040
Number of pages	7
Journal	Advanced Materials
Volume	26
Issue number	47
DOIs	https://doi.org/10.1002/adma.201403620
Publication status	Published - Jan 1 2014

Fingerprint

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Cite this

Lim, J., Jeong, B. G., Park, M., Kim, J. K., Pietryga, J. M., Park, Y. S., Klimov, V. I., Lee, C., Lee, D. C., & Bae, W. K. (2014). Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots. Advanced Materials, 26(47), 8034-8040. https://doi.org/10.1002/adma.201403620

Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots. / Lim, Jaehoon; Jeong, Byeong Guk; Park, Myeongjin; Kim, Jai Kyeong; Pietryga, Jeffrey M.; Park, Young Shin; Klimov, Victor I.; Lee, Changhee; Lee, Doh C.; Bae, Wan Ki.

In: Advanced Materials, Vol. 26, No. 47, 01.01.2014, p. 8034-8040.

Research output: Contribution to journal › Article

Lim, Jaehoon ; Jeong, Byeong Guk ; Park, Myeongjin ; Kim, Jai Kyeong ; Pietryga, Jeffrey M. ; Park, Young Shin ; Klimov, Victor I. ; Lee, Changhee ; Lee, Doh C. ; Bae, Wan Ki. / Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots. In: Advanced Materials. 2014 ; Vol. 26, No. 47. pp. 8034-8040.

@article{57acb6e95e6b4f09b8c67a09a1cc01e5,

title = "Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots",

abstract = "The rapid advance and growth of the display industry has provided an impetus for the development of novel emissive materials for high-energy-efficiency light-emitting diodes (LED). Quantum dots (QD) offer narrow, size-tunable emission over the full visible wavelength region, and consequently have received particular attention as a class of high-color-purity fluorophores. However, PL lifetimes drastically decrease when QDs are assembled into compact films and decrease further within the actual devices, with a severity noticeably dependent on shell thickness. Intriguingly, this tendency is markedly similar to absolute PL QYs measured on the same samples using an integrating sphere spectrometer. Spectroscopic analysis of the QLEDs demonstrates the influence of nonradiative recombination processes on the overall device characteristics.",

author = "Jaehoon Lim and Jeong, {Byeong Guk} and Myeongjin Park and Kim, {Jai Kyeong} and Pietryga, {Jeffrey M.} and Park, {Young Shin} and Klimov, {Victor I.} and Changhee Lee and Lee, {Doh C.} and Bae, {Wan Ki}",

year = "2014",

month = jan

day = "1",

doi = "10.1002/adma.201403620",

language = "English",

volume = "26",

pages = "8034--8040",

journal = "Advanced Materials",

issn = "0935-9648",

publisher = "Wiley-VCH Verlag",

number = "47",

}

TY - JOUR

T1 - Influence of shell thickness on the performance of light-emitting devices based on CdSe/Zn 1- X Cd x S core/shell heterostructured quantum dots

AU - Lim, Jaehoon

AU - Jeong, Byeong Guk

AU - Park, Myeongjin

AU - Kim, Jai Kyeong

AU - Pietryga, Jeffrey M.

AU - Park, Young Shin

AU - Klimov, Victor I.

AU - Lee, Changhee

AU - Lee, Doh C.

AU - Bae, Wan Ki

PY - 2014/1/1

Y1 - 2014/1/1

N2 - The rapid advance and growth of the display industry has provided an impetus for the development of novel emissive materials for high-energy-efficiency light-emitting diodes (LED). Quantum dots (QD) offer narrow, size-tunable emission over the full visible wavelength region, and consequently have received particular attention as a class of high-color-purity fluorophores. However, PL lifetimes drastically decrease when QDs are assembled into compact films and decrease further within the actual devices, with a severity noticeably dependent on shell thickness. Intriguingly, this tendency is markedly similar to absolute PL QYs measured on the same samples using an integrating sphere spectrometer. Spectroscopic analysis of the QLEDs demonstrates the influence of nonradiative recombination processes on the overall device characteristics.

AB - The rapid advance and growth of the display industry has provided an impetus for the development of novel emissive materials for high-energy-efficiency light-emitting diodes (LED). Quantum dots (QD) offer narrow, size-tunable emission over the full visible wavelength region, and consequently have received particular attention as a class of high-color-purity fluorophores. However, PL lifetimes drastically decrease when QDs are assembled into compact films and decrease further within the actual devices, with a severity noticeably dependent on shell thickness. Intriguingly, this tendency is markedly similar to absolute PL QYs measured on the same samples using an integrating sphere spectrometer. Spectroscopic analysis of the QLEDs demonstrates the influence of nonradiative recombination processes on the overall device characteristics.

UR - http://www.scopus.com/inward/record.url?scp=84919723663&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84919723663&partnerID=8YFLogxK

U2 - 10.1002/adma.201403620

DO - 10.1002/adma.201403620

M3 - Article

AN - SCOPUS:84919723663

VL - 26

SP - 8034

EP - 8040

JO - Advanced Materials

JF - Advanced Materials

SN - 0935-9648

IS - 47

ER -

Access to Document

10.1002/adma.201403620