 White light emitting diodes, LEDs, are expected to replace traditional lighting sources within the next five to ten years due to their high efficiency, reliability, and long lifetimes. LEDs use a combination of blue or near ultraviolet, NUV, LEDs and phosphorus to produce a warm light with low color temperature and high energy efficiency. New phosphorus are needed to absorb the excitation energy from the LEDs and emit visible light efficiently. The selection of these phosphorus should be based on their ability to absorb the wavelengths of the LEDs and emit light at the appropriate wavelengths. Additionally, the balance of light between the LEDs and the phosphorus must be carefully considered to achieve the desired color rendering index and color temperature. This article was authored by Chaowen Yeh, Ruxia Liu, Chen Che-lin, and others. We are article.tv, links in the description below.