Enhancing the electroluminescent properties of organic light-emitting devices using a thin NaCl layer

S. J. Kang; D. S. Park; S. Y. Kim; C. N. Whang; K. Jeong; S. Im

doi:10.1063/1.1511817

Enhancing the electroluminescent properties of organic light-emitting devices using a thin NaCl layer

S. J. Kang, D. S. Park, S. Y. Kim, C. N. Whang, K. Jeong, S. Im

Department of Physics

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

86 Citations (Scopus)

Abstract

We report on the fabrication of organic light-emitting devices (OLEDs) using a thin NaCl interlayer as an electron-injection medium. The results show that the device containing the NaCl layer has a higher brightness and electroluminescent efficiency than the device without this layer. We also fabricated similar-structured comparable devices, which were prepared with a LiF layer as a different electron-injection medium. The maximum electroluminescent efficiency of the NaCl (1 nm)/Al cathode device was 2.85 cd/A, which is higher than the 2.25 cd/A of the LiF (1 nm)/Al cathode device. The ultrathin NaCl layer modified the carrier injection properties. In conclusion, the NaCl layer between a cathode and an emitting layer of OLEDs can be used as the carrier injection layer to improve the EL properties.

Original language	English
Pages (from-to)	2581-2583
Number of pages	3
Journal	Applied Physics Letters
Volume	81
Issue number	14
DOIs	https://doi.org/10.1063/1.1511817
Publication status	Published - 2002 Sept 30

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1511817

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title = "Enhancing the electroluminescent properties of organic light-emitting devices using a thin NaCl layer",

abstract = "We report on the fabrication of organic light-emitting devices (OLEDs) using a thin NaCl interlayer as an electron-injection medium. The results show that the device containing the NaCl layer has a higher brightness and electroluminescent efficiency than the device without this layer. We also fabricated similar-structured comparable devices, which were prepared with a LiF layer as a different electron-injection medium. The maximum electroluminescent efficiency of the NaCl (1 nm)/Al cathode device was 2.85 cd/A, which is higher than the 2.25 cd/A of the LiF (1 nm)/Al cathode device. The ultrathin NaCl layer modified the carrier injection properties. In conclusion, the NaCl layer between a cathode and an emitting layer of OLEDs can be used as the carrier injection layer to improve the EL properties.",

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AU - Kang, S. J.

AU - Park, D. S.

AU - Kim, S. Y.

AU - Whang, C. N.

AU - Jeong, K.

AU - Im, S.

PY - 2002/9/30

Y1 - 2002/9/30

N2 - We report on the fabrication of organic light-emitting devices (OLEDs) using a thin NaCl interlayer as an electron-injection medium. The results show that the device containing the NaCl layer has a higher brightness and electroluminescent efficiency than the device without this layer. We also fabricated similar-structured comparable devices, which were prepared with a LiF layer as a different electron-injection medium. The maximum electroluminescent efficiency of the NaCl (1 nm)/Al cathode device was 2.85 cd/A, which is higher than the 2.25 cd/A of the LiF (1 nm)/Al cathode device. The ultrathin NaCl layer modified the carrier injection properties. In conclusion, the NaCl layer between a cathode and an emitting layer of OLEDs can be used as the carrier injection layer to improve the EL properties.

AB - We report on the fabrication of organic light-emitting devices (OLEDs) using a thin NaCl interlayer as an electron-injection medium. The results show that the device containing the NaCl layer has a higher brightness and electroluminescent efficiency than the device without this layer. We also fabricated similar-structured comparable devices, which were prepared with a LiF layer as a different electron-injection medium. The maximum electroluminescent efficiency of the NaCl (1 nm)/Al cathode device was 2.85 cd/A, which is higher than the 2.25 cd/A of the LiF (1 nm)/Al cathode device. The ultrathin NaCl layer modified the carrier injection properties. In conclusion, the NaCl layer between a cathode and an emitting layer of OLEDs can be used as the carrier injection layer to improve the EL properties.

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Enhancing the electroluminescent properties of organic light-emitting devices using a thin NaCl layer

Abstract

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