Our approach
Traditional LED Phosphors vs. LehMoSense’s Eco-Friendly Alternative
The problem with most commercial LED phosphors is that they rely on rare-earth materials, which are subject to supply chain risks due to geopolitical issues and cause significant environmental harm, particularly in regions like Baotou, China, where extraction leads to pollution and ecological damage. At LehMoSense, we’ve developed a solution—rare-earth-free phosphors produced locally using sustainable methods. Our LED phosphors eliminate supply risks, reduce environmental impact, and lower costs while maintaining high-quality, energy-efficient lighting solutions.
How it works
How LEDs produce white light
Use of LEDs for lighting purposes saves energy but LEDs that directly emit white light do not exist! White LEDs are commonly produced by coating phosphors (or photoluminescent materials) onto blue or ultraviolet (UV) LEDs chips. In this way, the light from the blue LED chips (for example) mixes with the light emitted by the phosphor material to form white light. White light is also produced when, red, green and blue (RGB) LEDs are combined together but this method is very expensive. The commercially preferred method is the phosphor converted white LEDs.
Photoluminescent spectra of LehMo-Light-01 (blue curve) in comparison with the standard yellow emitting Cerium doped Ytrium, Alluminium Ganet (YAG:Ce) (red dotted curve). The full width at half maximum (FWHM) of LehMo-Light-01 is slightly greater at 119 nm against that of YAG:Ce which is 113 nm. The red components of the emitted light at wavelength of 625 nm is at 60 % of the maximum intensity which is greater than that of the YAG:Ce by about 15%. LehMo-Light-01 phosphor can therefore form warm white light unlike the YAG:Ce which require additional rare-earth red emitting photoluminescent material.
This image shows our LED phosphor (LehMo-Light-01) when illuninated by blue LED.
