Nature, volume 420, issue 6917, pages 800-803

Electroluminescence from single monolayers of nanocrystals in molecular organic devices

Seth Coe 1
Wing-Keung Woo 2
Moungi Bawendi 2
Vladimir Bulović 1
Publication typeJournal Article
Publication date2002-12-18
Journal: Nature
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor64.8
ISSN00280836, 14764687
Multidisciplinary
Abstract
The integration of organic and inorganic materials at the nanometre scale into hybrid optoelectronic structures enables active devices1,2,3 that combine the diversity of organic materials with the high-performance electronic and optical properties of inorganic nanocrystals4. The optimization of such hybrid devices ultimately depends upon the precise positioning of the functionally distinct materials. Previous studies5,6 have already emphasized that this is a challenge, owing to the lack of well-developed nanometre-scale fabrication techniques. Here we demonstrate a hybrid light-emitting diode (LED) that combines the ease of processability of organic materials with the narrow-band, efficient luminescence of colloidal quantum dots7 (QDs). To isolate the luminescence processes from charge conduction, we fabricate a quantum-dot LED (QD-LED) that contains only a single monolayer of QDs, sandwiched between two organic thin films. This is achieved by a method that uses material phase segregation between the QD aliphatic capping groups and the aromatic organic materials. In our devices, where QDs function exclusively as lumophores, we observe a 25-fold improvement in luminescence efficiency (1.6 cd A-1 at 2,000 cd m-2) over the best previous QD-LED results5. The reproducibility and precision of our phase-segregation approach suggests that this technique could be widely applicable to the fabrication of other hybrid organic/inorganic devices.

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GOST |
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GOST Copy
Coe S. et al. Electroluminescence from single monolayers of nanocrystals in molecular organic devices // Nature. 2002. Vol. 420. No. 6917. pp. 800-803.
GOST all authors (up to 50) Copy
Coe S., Woo W., Bawendi M., Bulović V. Electroluminescence from single monolayers of nanocrystals in molecular organic devices // Nature. 2002. Vol. 420. No. 6917. pp. 800-803.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1038/nature01217
UR - https://doi.org/10.1038/nature01217
TI - Electroluminescence from single monolayers of nanocrystals in molecular organic devices
T2 - Nature
AU - Coe, Seth
AU - Woo, Wing-Keung
AU - Bawendi, Moungi
AU - Bulović, Vladimir
PY - 2002
DA - 2002/12/18 00:00:00
PB - Springer Nature
SP - 800-803
IS - 6917
VL - 420
SN - 0028-0836
SN - 1476-4687
ER -
BibTex |
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BibTex Copy
@article{2002_Coe,
author = {Seth Coe and Wing-Keung Woo and Moungi Bawendi and Vladimir Bulović},
title = {Electroluminescence from single monolayers of nanocrystals in molecular organic devices},
journal = {Nature},
year = {2002},
volume = {420},
publisher = {Springer Nature},
month = {dec},
url = {https://doi.org/10.1038/nature01217},
number = {6917},
pages = {800--803},
doi = {10.1038/nature01217}
}
MLA
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MLA Copy
Coe, Seth, et al. “Electroluminescence from single monolayers of nanocrystals in molecular organic devices.” Nature, vol. 420, no. 6917, Dec. 2002, pp. 800-803. https://doi.org/10.1038/nature01217.
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