Printable candlelight-style organic light-emitting diode

5th International Conference on Manufacturing, Optimization, Industrial and Material Engineering

Jou, J.H.^1 ; Singh, M.^1 ; Song, W.C.^1 ; Liu, S.H.^1

Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu

30013, Taiwan^1

关键词: Candlelight;    Exposure limits;    High lights;    Melatonin Suppression;    Printable OLED;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/215/1/012022/pdf
DOI  :  10.1088/1757-899X/215/1/012022

来源: IOP

【 摘 要 】

Candles or oil lamps are currently the most friendly lighting source to human eyes, physiology, ecosystems, artifacts, environment, and night skies due to their blue light-less emission. Candle light also exhibits high light-quality that provides visual comfort. However, they are relatively low in power efficacy (0.3 lm/W), making them energy-wasting, besides having problems like scorching hot, burning, catching fire, flickering, carbon blacking, oxygen consuming, and release of green house gas etc. In contrast, candlelight organic light-emitting diode (OLED) can be made blue-hazard free and energy-efficient. The remaining challenges are to maximize its light-quality and enable printing feasibility, the latter of which would pave a way to cost-effective manufacturing. We hence demonstrate herein the design and fabrication of a candlelight OLED via wet-process. From retina protection perspective, its emission is 13, 12 and 8 times better than those of the blue-enriched white CFL, LED and OLED. If used at night, it is 9, 6 and 4 times better from melatonin generation perspective.