Blue and white light modulation of a flexible electroluminescent device based on phosphors

Abstract

Flexibility, certain mechanical strength, and color modulation are significant elements for flexible optoelectronic devices. However, it is laborious to fabricate a flexible electroluminescent device with balanceable flexibility and color modulation. Here, we mix a conductive nonopaque hydrogel and phosphors to fabricate a flexible alternating current electroluminescence (ACEL) device with color modulation ability. This device realizes flexible strain based on polydimethylsiloxane and carboxymethyl cellulose/polyvinyl alcohol ionic conductive hydrogel. The color modulation ability is achieved by varying the voltage frequency applied on the electroluminescent phosphors. The color modulation could realize blue and white light modulation. Our electroluminescent device exhibits great potential in artificial flexible optoelectronics.

Nano scattering particle: an approach to improve quality of the commercial led

“…Among widely investigated nanoparticles, TiO2 nanoparticles offer great scattering efficiency across the entire visible spectrum, high stability, and versatile application capabilities [17,18]. Moreover, to the best of our knowledge, TiO2 is barely investigated as a scattering enhancement factor for LED lighting [19][20][21][22]. Therefore, in our work, the commercial LED is produced with a commercial blue LED chip, yellow phosphor YAG: Ce 3+ , and TiO2 nanoparticles.…”