ZnSe/ZnS quantum dots as emitting material in blue QD-LEDs with narrow emission peak and wavelength tunability

Christian Ippen; Tonino Greco; Yohan Kim; Jiwan Kim; Min Suk Oh; Chul Jong Han; Armin Wedel

doi:10.1016/j.orgel.2013.11.003

ZnSe/ZnS quantum dots as emitting material in blue QD-LEDs with narrow emission peak and wavelength tunability

Christian Ippen
, Tonino Greco
, Yohan Kim
, Jiwan Kim
, Min Suk Oh
, Chul Jong Han
, Armin Wedel

Department of Materials Science and Engineering

Fraunhofer Institute for Applied Polymer Research
Korea Electronics Technology Institute

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

84 Scopus citations

Abstract

Quantum dots are a highly attractive class of materials for the use in light-emitting devices, since they allow high color purity, facile tunability and solution-processing methods. Here, zinc selenide QDs are investigated for their suitability as emissive material in cadmium-free blue QD-LEDs. By adjusting the stoichiometry in the synthesis the emission wavelength can be tuned in the range of 390-435 nm. For the assembly of the QD-LED, the device setup was adjusted to the low-lying ZnSe valence band energy by choosing a suitable hole-transport material. A first promising QD-LED result is achieved showing the characteristic narrow QD emission peak with a luminance of 25 cd/m².

Original language	English
Pages (from-to)	126-131
Number of pages	6
Journal	Organic Electronics
Volume	15
Issue number	1
DOIs	https://doi.org/10.1016/j.orgel.2013.11.003
State	Published - 2014

Keywords

Blue light-emitting devices
Cadmium-free
Quantum dots
Zinc selenide

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10.1016/j.orgel.2013.11.003

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title = "ZnSe/ZnS quantum dots as emitting material in blue QD-LEDs with narrow emission peak and wavelength tunability",

abstract = "Quantum dots are a highly attractive class of materials for the use in light-emitting devices, since they allow high color purity, facile tunability and solution-processing methods. Here, zinc selenide QDs are investigated for their suitability as emissive material in cadmium-free blue QD-LEDs. By adjusting the stoichiometry in the synthesis the emission wavelength can be tuned in the range of 390-435 nm. For the assembly of the QD-LED, the device setup was adjusted to the low-lying ZnSe valence band energy by choosing a suitable hole-transport material. A first promising QD-LED result is achieved showing the characteristic narrow QD emission peak with a luminance of 25 cd/m2.",

keywords = "Blue light-emitting devices, Cadmium-free, Quantum dots, Zinc selenide",

author = "Christian Ippen and Tonino Greco and Yohan Kim and Jiwan Kim and Oh, \{Min Suk\} and Han, \{Chul Jong\} and Armin Wedel",

year = "2014",

doi = "10.1016/j.orgel.2013.11.003",

language = "English",

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T1 - ZnSe/ZnS quantum dots as emitting material in blue QD-LEDs with narrow emission peak and wavelength tunability

AU - Ippen, Christian

AU - Greco, Tonino

AU - Kim, Yohan

AU - Kim, Jiwan

AU - Oh, Min Suk

AU - Han, Chul Jong

AU - Wedel, Armin

PY - 2014

Y1 - 2014

N2 - Quantum dots are a highly attractive class of materials for the use in light-emitting devices, since they allow high color purity, facile tunability and solution-processing methods. Here, zinc selenide QDs are investigated for their suitability as emissive material in cadmium-free blue QD-LEDs. By adjusting the stoichiometry in the synthesis the emission wavelength can be tuned in the range of 390-435 nm. For the assembly of the QD-LED, the device setup was adjusted to the low-lying ZnSe valence band energy by choosing a suitable hole-transport material. A first promising QD-LED result is achieved showing the characteristic narrow QD emission peak with a luminance of 25 cd/m2.

AB - Quantum dots are a highly attractive class of materials for the use in light-emitting devices, since they allow high color purity, facile tunability and solution-processing methods. Here, zinc selenide QDs are investigated for their suitability as emissive material in cadmium-free blue QD-LEDs. By adjusting the stoichiometry in the synthesis the emission wavelength can be tuned in the range of 390-435 nm. For the assembly of the QD-LED, the device setup was adjusted to the low-lying ZnSe valence band energy by choosing a suitable hole-transport material. A first promising QD-LED result is achieved showing the characteristic narrow QD emission peak with a luminance of 25 cd/m2.

KW - Blue light-emitting devices

KW - Cadmium-free

KW - Quantum dots

KW - Zinc selenide

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DO - 10.1016/j.orgel.2013.11.003

M3 - Article

AN - SCOPUS:84888103363

SN - 1566-1199

VL - 15

SP - 126

EP - 131

JO - Organic Electronics

JF - Organic Electronics

IS - 1

ER -

ZnSe/ZnS quantum dots as emitting material in blue QD-LEDs with narrow emission peak and wavelength tunability

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Keywords

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