High performance blue light-emitting diodes based on conjugated polymer blends

L. C. Paillis; D. G. Lidzey; M. Redecker; D. D.C. Bradley; M. Inbasekaran; E. P. Woo; W. W. Wu

doi:10.1016/S0379-6779(00)01492-2

High performance blue light-emitting diodes based on conjugated polymer blends

L. C. Paillis, D. G. Lidzey, M. Redecker, D. D.C. Bradley, M. Inbasekaran, E. P. Woo, W. W. Wu

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

35 Scopus citations

Abstract

We report on the fabrication and properties of single layer blue light-emitting diodes (LEDs) based on conjugated polymer blends of emissive and hole transport materials. Despite the fact that the photoluminescence quantum efficiency of the blend is lower compared to that of both the host and the guest polymers, an enhancement in both the electroluminescence quantum and power efficiency is seen for the blend. This observation indicates that the hole transporting material leads to a significantly improved hole injection and thus a greatly improved charge carrier balance factor. Optimised single layer blue LEDs showed a maximum brightness of 6000 Cd/m 2 at 14 V and a maximum external ELQE of 1% (2.1 Cd/A) at 15 Cd/m 2 corresponding to a power efficiency of 1 lm/WL).

Original language	English (US)
Journal	Synthetic Metals
Volume	121
Issue number	1-3
DOIs	https://doi.org/10.1016/S0379-6779(00)01492-2
State	Published - Mar 15 2001
Externally published	Yes

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title = "High performance blue light-emitting diodes based on conjugated polymer blends",

abstract = "We report on the fabrication and properties of single layer blue light-emitting diodes (LEDs) based on conjugated polymer blends of emissive and hole transport materials. Despite the fact that the photoluminescence quantum efficiency of the blend is lower compared to that of both the host and the guest polymers, an enhancement in both the electroluminescence quantum and power efficiency is seen for the blend. This observation indicates that the hole transporting material leads to a significantly improved hole injection and thus a greatly improved charge carrier balance factor. Optimised single layer blue LEDs showed a maximum brightness of 6000 Cd/m 2 at 14 V and a maximum external ELQE of 1% (2.1 Cd/A) at 15 Cd/m 2 corresponding to a power efficiency of 1 lm/WL).",

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AU - Paillis, L. C.

AU - Lidzey, D. G.

AU - Redecker, M.

AU - Bradley, D. D.C.

AU - Inbasekaran, M.

AU - Woo, E. P.

AU - Wu, W. W.

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AB - We report on the fabrication and properties of single layer blue light-emitting diodes (LEDs) based on conjugated polymer blends of emissive and hole transport materials. Despite the fact that the photoluminescence quantum efficiency of the blend is lower compared to that of both the host and the guest polymers, an enhancement in both the electroluminescence quantum and power efficiency is seen for the blend. This observation indicates that the hole transporting material leads to a significantly improved hole injection and thus a greatly improved charge carrier balance factor. Optimised single layer blue LEDs showed a maximum brightness of 6000 Cd/m 2 at 14 V and a maximum external ELQE of 1% (2.1 Cd/A) at 15 Cd/m 2 corresponding to a power efficiency of 1 lm/WL).

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High performance blue light-emitting diodes based on conjugated polymer blends

Abstract

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