Fabrication and characterization of red-emitting electroluminescent devices based on thiol-stabilized semiconductor nanocrystals

Cristina Bertoni; Diego Gallardo; Steve Dunn; Nikolai Gaponik; Alexander Eychmüller

doi:10.1063/1.2433030

Fabrication and characterization of red-emitting electroluminescent devices based on thiol-stabilized semiconductor nanocrystals

Cristina Bertoni, Diego Gallardo, Steve Dunn, Nikolai Gaponik, Alexander Eychmüller

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

85 Citations (Scopus)

Abstract

Thiol-capped CdTe nanocrystals were used to fabricate light-emitting diodes, consisting of an emissive nanocrystal multilayer deposited layer by layer, sandwiched between indium tin oxide and aluminum electrodes. The emissive and electrical properties of devices with different numbers of nanocrystal layers were studied. The improved structural homogeneity of the nanocrystal multilayer allowed for stable and repeatable current- and electroluminescence- voltage characteristics. These indicate that both current and electroluminescence are electric-field dependent. Devices were operated under ambient conditions and a clear red light was detected. The best performing device shows a peak external efficiency of 0.51% and was measured at 0.35 mA cm2 and 3.3 V.

Original language	English
Article number	034107
Journal	Applied Physics Letters
Volume	90
Issue number	3
DOIs	https://doi.org/10.1063/1.2433030
Publication status	Published - 19 Jan 2007
Externally published	Yes

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10.1063/1.2433030

Cite this

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title = "Fabrication and characterization of red-emitting electroluminescent devices based on thiol-stabilized semiconductor nanocrystals",

abstract = "Thiol-capped CdTe nanocrystals were used to fabricate light-emitting diodes, consisting of an emissive nanocrystal multilayer deposited layer by layer, sandwiched between indium tin oxide and aluminum electrodes. The emissive and electrical properties of devices with different numbers of nanocrystal layers were studied. The improved structural homogeneity of the nanocrystal multilayer allowed for stable and repeatable current- and electroluminescence- voltage characteristics. These indicate that both current and electroluminescence are electric-field dependent. Devices were operated under ambient conditions and a clear red light was detected. The best performing device shows a peak external efficiency of 0.51% and was measured at 0.35 mA cm2 and 3.3 V.",

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T1 - Fabrication and characterization of red-emitting electroluminescent devices based on thiol-stabilized semiconductor nanocrystals

AU - Bertoni, Cristina

AU - Gallardo, Diego

AU - Dunn, Steve

AU - Gaponik, Nikolai

AU - Eychmüller, Alexander

PY - 2007/1/19

Y1 - 2007/1/19

N2 - Thiol-capped CdTe nanocrystals were used to fabricate light-emitting diodes, consisting of an emissive nanocrystal multilayer deposited layer by layer, sandwiched between indium tin oxide and aluminum electrodes. The emissive and electrical properties of devices with different numbers of nanocrystal layers were studied. The improved structural homogeneity of the nanocrystal multilayer allowed for stable and repeatable current- and electroluminescence- voltage characteristics. These indicate that both current and electroluminescence are electric-field dependent. Devices were operated under ambient conditions and a clear red light was detected. The best performing device shows a peak external efficiency of 0.51% and was measured at 0.35 mA cm2 and 3.3 V.

AB - Thiol-capped CdTe nanocrystals were used to fabricate light-emitting diodes, consisting of an emissive nanocrystal multilayer deposited layer by layer, sandwiched between indium tin oxide and aluminum electrodes. The emissive and electrical properties of devices with different numbers of nanocrystal layers were studied. The improved structural homogeneity of the nanocrystal multilayer allowed for stable and repeatable current- and electroluminescence- voltage characteristics. These indicate that both current and electroluminescence are electric-field dependent. Devices were operated under ambient conditions and a clear red light was detected. The best performing device shows a peak external efficiency of 0.51% and was measured at 0.35 mA cm2 and 3.3 V.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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