A cozier LED bulb may be available in the near future, thanks to German researchers. Scientists from Dresden University of Technology in Germany are striving to create energy efficient organic LED (OLED) lights that could rival incandescent bulbs in white-light color quality. One of the major complaints consumers report when dealing with LED light bulbs is that they still do not emit that same pleasant, warm color of light that makes incandescent bulbs so popular, despite their energy-guzzling qualities. According to TruthDive, “OLEDs consist of many layers of organic materials with different electrical properties. Excited electrons move through the materials and when the electrons are reunited with positive “holes,” they emit electromagnetic radiation in the form of visible light.” Combining these emitter layers in four separate colors (blue, green, yellow and red) and adjusting the height of the layers makes it possible for the researchers to create light color and quality that was previously unachievable in LED lighting.  The results of this endeavor were published in AIP’s Journal of Applied Physics, which found that the final LED light fixtures cast a color of light that was very near the standard measure of white light reached by some incandescent bulbs. “The OLED also has high colour stability, meaning the light can be dimmed without noticeably altering its quality,” according to TruthDive.

Quotes via TruthDive, image via Housing Construction of India