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 | |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering
Cite this
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, 2014, p. 8034-8040.Research output: Contribution to journal › Article
}
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
Y1 - 2014
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 -