@article{ref1,
title="Enabling a blue-hazard free general lighting based on candle light-style OLED",
journal="Optics express",
year="2015",
author="Jou, Jwo-Huei and Kumar, Sudhir and An, Chih-Chia and Singh, Meenu and Yu, Huei-Huan and Hsieh, Chun-Yu and Lin, You-Xing and Sung, Chao-Feng and Wang, Ching-Wu",
volume="23",
number="11",
pages="A576-81",
abstract="Increasing studies report blue light to possess a potential hazard to the retina of human eyes, secretion of melatonin and artworks. To devise a human- and artwork-friendly light source and to also trigger a &quot;Lighting Renaissance&quot;, we demonstrate here how to enable a quality, blue-hazard free general lighting source on the basis of low color-temperature organic light emitting diodes. With the use of multiple candlelight complementary emitters, the sensationally warm candle light-style emission is proven to be also drivable by electricity. To be energy-saving, highly efficient candle-light emission is demanded. The device shows, at 100 cd m<sup>-2</sup> for example, an efficacy of 85.4 lm W<sup>-1</sup>, an external quantum efficiency of 27.4%, with a 79 spectrum resemblance index and 2,279 K color temperature. The high efficiency may be attributed to the candlelight emitting dyes with a high quantum yield, and the host molecules facilitating an effective host-to-guest energy transfer, as well as effective carrier injection balance.<p /> <p>Language: en</p>",
language="en",
issn="1094-4087",
doi="",
url="http://dx.doi.org/"
}