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Issue 41, 2012
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Sunlight-like, color-temperature tunable white organic light-emitting diode with high color rendering index for solid-state lighting application

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Abstract

A high color rendering index (CRI) is crucial for organic light-emitting diode (OLED) which can be applied in high-quality lighting sources. We have developed three types of white OLEDs with two-, three- and four-peak electroluminescence spectra. For two-peak OLED, a luminance efficiency of 34.59 cd A−1 at 100 cd m−2 with a CRI of 45 is obtained. For three-peak OLED, CRI above 85 and a maximum luminance efficiency of 27.29 cd A−1 are realized. Four-peak OLED yields color-temperature tunable white emission in the luminance range of 100 cd m−2 to 5000 cd m−2, a sunlight-like spectrum with a CRI of 89 at 5000 cd m−2. The wide color-temperature span of the four-peak OLED could meet the requirements for lighting in dwellings.

Graphical abstract: Sunlight-like, color-temperature tunable white organic light-emitting diode with high color rendering index for solid-state lighting application

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Publication details

The article was received on 19 Jul 2012, accepted on 03 Sep 2012 and first published on 04 Sep 2012


Article type: Paper
DOI: 10.1039/C2JM34763F
J. Mater. Chem., 2012,22, 22097-22101

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    Sunlight-like, color-temperature tunable white organic light-emitting diode with high color rendering index for solid-state lighting application

    J. Yu, H. Lin, F. Wang, Y. Lin, J. Zhang, H. Zhang, Z. Wang and B. Wei, J. Mater. Chem., 2012, 22, 22097
    DOI: 10.1039/C2JM34763F

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