Researchers Create Sand to Generate Sun-Like LEDs which Cut off the Impacts of Blue Light

A Spanish research team has developed a new light emitting material which generates light source that is similar to the sun and reduces the harmfulness of blue light. The result was published in Materials Horizons in September 2018.

The new material, silica nanoparticles, which is similar to sand and emits high-quality light, was developed by researchers Rubén Costa, from the IMDEA Materials, Jesús Berenguer, from the University of La Rioja, and Javier García, from the University of Alicante. With the sand-like materials, the research team can produce a new generation of hybrid LEDs that eliminates blue light.


(Image: University of Alicante)

The high content of blue light presented by current LEDs can be harmful to the human retina, especially for children, and has a negative impact on brain chemistry. Through the development of the light emitting silica nanoparticles and its further applications, researchers have overcome one of the biggest challenges in the progress towards newer and healthier artificial lighting sources.

The development was achieved through the collaboration between the researchers who leverage their expertise. The team from the universities of La Rioja and Alicante used a coordination chemistry called sol-gel, which enables the preparation of metal oxides with new properties. Rubén Costa, who specializes in the design of LED and the development of photovoltaic energy, investigated the properties of these oxides together with his team at IMDEA Materials.

The team has worked together to produce white light with a grain of sand which stands out for its stability and sun-like light source that does not damage the eye. Moreover, LEDs prepared with this new material present a new stability record well above those previously developed in other colors. The practical interest of this white light emitting sand is that it could replace the current color filters based on rare soils such as yttrium, whose extraction and exploitation cause crucial negative effects on the environment.

Reference:
Cintia Ezquerro, Elisa Fresta, Elena Serrano, Elena Lalinde, Javier García-Martínez, Jesús R. Berenguer and Rubén D. Costa. White-emitting organometallo-silica nanoparticles for sun-like light-emitting diodes. Materials Horizons 2018.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Tokushima, Japan - 6 March 2024: Nichia, the world's largest LED manufacturer and inventor of the high-brightness blue and white LED, has started mass production of the new UV-B (308nm) and UV-A (330nm) LEDs in its popular 434 Series packa... READ MORE

New XLamp® S Line LEDs enhance growth, last longer, lower energy costs Horticulture and other forms of agricultural lighting require application-tuned ratios of spectral content, high efficacy and long lifetimes. Whether you are interested... READ MORE